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KOREAN JOURNAL OF BREEDING SCIENCE

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식물의 엽록소 생합성 및 조절 기작에 대한 주요 연구동향
Recent Advances in Genetic Regulation of Chlorophyll Metabolism in Plants
김다혜(Da-Hye Kim),양주희(Ju-Hee Yang),김현정(Hyoun-Joung Kim),이주희(JuHee Rhee),이종렬(Jong-Yeol Lee),임선형(Sun-Hyung Lim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
281-296 (16 pages)
자연과학>생활/식품과학
Abstract
Chlorophyll is an essential pigment involved in light absorption and electron transfer in photosynthesis, a photochemical processthat is indispensable for plant growth and development. The biosynthesis of chlorophyll occurs in plastids and shares a common biosyntheticpathway with other tetrapyrroles. The chlorophyll metabolic pathway is divided into four distinct components: the common pathway,chlorophyll-specific biosynthetic pathway, chlorophyll cycle, and chlorophyll degradation pathway, which are regulated in developmental- andenvironmental-specific manners. During the early stages of plant growth, the expression of most chlorophyll biosynthetic genes is inducedby light, resulting in an increase in chlorophyll accumulation, induction of high photosynthetic activity, and continuous plant growth. In contrast,during plant maturation, the expression of most of these genes is gradually downregulated, whereas genes involved in chlorophyll degradationare upregulated during leaf senescence. Chlorophyll biosynthesis is directly or indirectly regulated by the members of various transcriptionfactor families. In this review, we describe representative mechanisms of transcription factor-mediated activation and repression of chlorophyllbiosynthesis in response to light treatment. We also present an overview of recent studies that have examined all the enzymatic steps involvedin chlorophyll metabolic pathways and their gene regulation at the transcriptional level, which will enable readers to gain a better understandingof chlorophyll metabolism.
배추 완전장 유전자 과발현 애기장대 형질전환체 활용 내염성 유전자 선발 및 유채 형질전환
Functional Screening of Salt Stress Tolerance Genes Using Transgenic Arabidopsis thaliana Lines Overexpressing Brassica rapa Full-length Genes and Brassica napus Transformation
홍준기(Joon Ki Hong),임명호(Myung-Ho Lim),서은정(Eun Jung Suh),윤혜진(Hye-Jin Yoon),박지희(Jihee Park),이연희(Yeon-Hee Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
297-309 (13 pages)
자연과학>생활/식품과학
Abstract
Given that soil salinity significantly limits plant growth and production in agricultural land, research on salt stress is of particular agricultural relevance. In this study, for the purposes of functional screening of genes involved in salt stress responses, we selected approximately 651 transgenic Arabidopsis lines (157 independent full-length) from a transgenic Arabidopsis population overexpressing full-length Brassica rapa cDNAs. Initial screening indicated that the transgenic lines of 12 genes showed apparent salt tolerance phenotypes when exposed to NaCl at a concentration of 125 mM, among which, two genes (BrATL30 and BrZHD10) were selected for detailed characterization. The T3 progeny of these transgenic lines exhibited accelerated seed germination, often accompanied by faster root growth and higher survival rate, compared with wild-type plants under salt stress. Additionally, in order to examine the agricultural potential of the two selected B. rapa genes, we constructed BrATL30- and BrZHD10-overexpressing Brassica napus transgenic plants (BrATL30-OX and BrZHD10-OX), which showed apparent high salt stress-tolerant phenotypes compared with wild-type plants. Furthermore, we found that the basal expression of several saltand abiotic stress-responsive genes was higher in transgenic plants than in wild-type plants. Taken together, this study will provide two valuable functional genes related to salt stress tolerance.
LMO격리포장에서 비타민A강화콩 재배가 곤충다양성에 미치는 영향
Influence of Vitamin A-enhanced Transgenic Soybean Cultivation on the Diversity of Insects in LMO Quarantine Fields
오성덕(Sung-Dug Oh),박수윤(Soo-Yun Park),이성곤(Seong-Kon Lee),윤도원(Doh-Won Yun),이강섭(Gang-Seob Lee),서상재(Sang Jae Suh)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
310-321 (12 pages)
자연과학>생활/식품과학
Abstract
In this study, conducted in living modified organism (LMO) isolation fields, we sought to develop environmental risk assessmentprocedures for identifying the potential effects on non-target above-ground insects and spiders within agroecosystems cultivated with vitaminA-enhanced transgenic soybean with tolerance to the herbicide glufosinate. To this end, we investigated insect/arachnid species diversitiesand population densities on vitamin A-enhanced transgenic soybean and non-GM soybean (Gwangan) grown in LMO quarantine areas ofKyungpook National University (Gunwi) and the National Institute of Agricultural Sciences (Jeonju). In total, 93,419 individual insects andarachnids, representing 65 families in 12 orders, were captured during the study. In Gunwi, totals of 17,110 and 17,627 individual insectsand arachnids were collected from vitamin A-enhanced transgenic soybean and Gwangan, respectively, whereas in Jeonju, totals of 28,621and 30,061 individuals were collected from vitamin A-enhanced transgenic soybean and Gwangan, respectively. Although we detected nosignificant differences among the population densities of insect pests, natural enemies, and other insects on vitamin A-enhanced transgenicsoybean and Gwangan grown within the same field, the population densities of these insects were found to be higher in Jeonju than thosein Gunwi. Throughout the study, analysis of variance indicated no significant differences (p<0.05) in insect/arachnid populations, and multivariateanalysis indicated that the abundance and diversity of plant-dwelling insects were similar within the same fields.
사과 저장성 연관 Md-ACS1, Md-ACO1, Md-PG1 분자표지의 활용성 평가
Validation Assay of Md-ACS1, Md-ACO1, and Md-PG1 Molecular Markers Associated with Storability in Apples
권영순(Young Soon Kwon),권순일(Soon-Il Kwon),김정희(Jeong-Hee Kim),박무용(Moo Yong Park),박종택(Jong Taek Park),김선애(Seon Ae Kim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
322-331 (10 pages)
자연과학>생활/식품과학
Abstract
The purpose of this study was to examine the potential utility of marker-assisted selection (MAS) based on storability-associatedmolecular markers in apple breeding and to provide genotype information for the markers Md-ACS1, Md-ACO1, and Md-PG1 in apple geneticresources as basic data for the use of breeding materials. We analyzed 750 apple genetic resources to assess the allelic composition of Md-ACS1and Md-ACO1, which play roles in the ethylene biosynthesis pathway, and Md-PG1, which is involved in cell wall degradation. For 108of the genetic resources used for genotyping, we measured fruit firmness using a texture analyzer (10 mm plunger) at harvest and after 20days of room temperature (20~25℃) storage. Md-ACS1 and Md-PG1 were found to be associated with changes in fruit firmness (the differencebetween firmness at harvest and after storage), with ACS1-2/2, PG1-1/1, and PG1-2/2 showing the lowest changes in fruit firmness. In addition,we found that changes in fruit firmness were smallest in late-harvest species, even for the same genotype. In contrast, Md-ACO1 appearedto be unrelated to the storability of fruit. Of the 750 apple genetic resources screened, the genotypes ACS1-2/2, and PG1-1/1 or PG1-2/2were detected in 3.6% of accessions, including ‘Fuji’, bud mutation cultivars of ‘Fuji’, ‘Chubu’, and ‘Iwakami’. The Md-ACS1 and Md-PG1markers could have potential utility in assessments of storability and applied in MAS to improve the efficiency of apple breeding.
93-11 × 밀양352 약배양 집단을 이용한 벼 출수기 QTL분석
QTL Analysis of Heading Date Using 93-11 × Milyang352 Doubled Haploid Lines in Rice
이소명(So-Myeong Lee),강주원(Ju-Won Kang),조준현(Jun-Hyeon Cho),이지윤(Ji-Yoon Lee),신동진(Dongjin Shin),권영호(Young-Ho Kwon),차진경(Jin-Kyung Cha),이샛별(Sais-Beul Lee),고종민(Jong-Min Ko),이종희(Jong-Hee Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
332-341 (10 pages)
자연과학>생활/식품과학
Abstract
Rice doubled haploid (DH) lines derived from crosses of the indica cultivar 93-11 and japonica line Milyang352 were used in genetic mapping and QTL analysis studies of days to heading (DTH), an important trait that controls rice yield and biomass. QTL mapping was conducted using the inclusive composite interval mapping method. We used 234 single-nucleotide polymorphic markers in the whole-genome region, including 100 KASP markers and 134 Fluidigm markers, to construct a genetic map. DH populations were raised in Milyang, Korea, over three different periods. Two major DTH QTLs, qDTH3-1 and qDTH7, were detected under natural conditions in Milyang, and explained 14.88%~24.56% and 24.20%~37.39% of the phenotypic variation, respectively, in 93-11 ×Milyang352 DH populations. During three different rice cultivation periods, qDTH3-1 and qDTH7 were repeatedly detected with significant logarithm of the odds scores and phenotypic variability explained. The findings of this study will make a valuable contribution to breeding high-yielding and early-maturing rice in Korea.
끝순 채소용 고구마 우수 품종 선발
Selection of Excellent Sweetpotato Varieties Suitable for Tip Vegetable Use
유경단(Gyeong-Dan Yu),이형운(Hyeong-Un Lee),남상식(Sang-Sik Nam),정미남(Mi-Nam Chung),고산(San Goh),황엄지(Eom-Ji Hwang),이승용(Seung-Yong Lee),박진천(Jin-Cheon Park),한선경(Seon-Kyeong Han),이임빈(Im-Been Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
342-353 (12 pages)
자연과학>생활/식품과학
Abstract
In order to select sweetpotato varieties with excellent tip characteristics, we investigated the appearance, yield, and functionalcompounds in 32 domestic sweetpotato varieties. During the cultivation period, the total production of sweetpotato tips among the differentvariety ranged from 1,780 to 9,923 g/m2, with that of the Gogeonmi variety being the highest. The lutein content among varieties rangedfrom 21.7 to 47.0 mg/100 g and was highest in the Juhwangmi variety, whereas the ß-carotene content ranged from 25.5 to 183.4 mg/100g and was highest in the Hayanmi variety. The total polyphenol content ranged from 30.7 to 74.4 mg CAE/g, and it was high in the Pungwonmi,Daeyumi, and Dahomi varieties at 74.4, 73.8, and 72.9 mg CAE/g, respectively, whereas the DPPH radical scavenging activity of tips rangedfrom 88.6% to 91.6%, with Gogeonmi and Healthymi showing the highest value of 91.6%. ABTS radical scavenging activity was found tobe lowest in the Yeonjami variety at 86%, whereas the remaining 31 varieties showed values in excess of 96%. ABTS radical scavengingactivity showed a high positive correlation with total polyphenol content. On the basis of these analyses, we identified Juhwangmi with highlutein content, Hayanmi with high beta-carotene content and high yield, and Gogeonmi with high DPPH radical scavenging activity and highyield, as being suitable varieties for tip cultivation. We anticipate that these sweetpotato varieties with excellent tip characteristics will beused as parents for the breeding of varieties for vegetable use.
콩에서 싸리수염진딧물 저항성 유전분석
Genetic Analysis of Foxglove Aphid (Aulacorthum solani Kaltenbach) Resistance in Soybeans
고홍민(Hong-Min Koh),서보윤(Bo Yoon Seo),김경혜(Kyung Hye Kim),김지민(Ji-Min Kim),이택림(Taeklim Lee),허진호(Jinho Heo),정지영(Jiyeong Jung),정진교(Jinkyo Jung),강성택(Sungteag Kang)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
354-361 (8 pages)
자연과학>생활/식품과학
Abstract
Recent climate changes have resulted in high temperatures, a greater frequency of flooding, and outbreaks of various plant diseasesand insect pests, the latter of which has been characterized by a change in pest type from crop chewing to sap-sucking insects. To date,however, there has been limited study of plant resistance to sap-sucking insects. This study was carried out to evaluate the resistance andgenetic patterns of the foxglove aphid Aulacorthum solani, a sap-sucking pest of soybean. We investigated the growth and reproduction ofthe foxglove aphid on five different varieties of soybean showing either susceptibility or resistance to this aphid in a non-choice test. Geneticanalysis was conducted using the two F2 populations derived from Daepung (susceptible to foxglove aphid) × IT104704 (resistant to foxgloveaphid) and Daepung × IT188399 (resistant to foxglove aphid) crosses, which were evaluated for their responses to foxglove aphids. Differencesin the responses of resistant and susceptible varieties were confirmed by monitoring aphid growth and reproduction. Although the two resistantgermplasms (IT104704 and IT188399) have a strong antibiosis effect, they showed a slight difference with respect to aphid viability. Geneticanalysis of foxglove aphid resistance showed that resistance was governed by a single dominant gene in IT104704 (3:1, p=0.11). We accordinglyidentified two resistant resources showing antibiosis to foxglove aphid, which is reported here for the first time, and also detected differencesin genetic behavior. These results could be useful not only with respect to securing materials showing resistance to the foxglove aphid butalso in the breeding of new foxglove aphid-resistant soybean cultivars.
국내 밀 품종의 종실 크기 관련 유전자 변이 평가
Allelic Variation at Loci Associated with Grain Properties in Korean Wheat Cultivars
김경민(Kyeong-Min Kim),조성우(Seong-Woo Cho),최리(Ri Choe),류나경(Na Kyung Ryu),황정윤(Jung-Yoon Hwang),김지우(Ji-Woo Kim),김경훈(Kyeong-Hoon Kim),강천식(Chon-Sik Kang),박철수(Chul Soo Park)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
362-373 (12 pages)
자연과학>생활/식품과학
Abstract
Kernel weight is a vital trait for selecting high-yielding wheat in breeding programs. We evaluated the thousand-kernel weight(TKW), test weight (TW), grain length (GL), grain width (GW), grain thickness (GT), and grain roundness (GR) of 41 Korean winter wheatcultivars over a period of 4 years. Correlation analyses revealed that TKW was positively correlated with GL (r=0.76***), GW (r=0.85***),and GT (r=0.84***), whereas TW was negatively correlated with GL (r=-0.38*) and GT (r=-0.31*). Allelic variation was analyzed for 13kernel weight-related genes/loci (TaCwi-A1, TaCWI-4A, TaCWI-5D, TaGW2-6A, TaTGW6-A1, TaTGW-7A, TaGS1a, TaSus1-7A, TaSus1-7B,TaSus2-2B, TaCKX6-D1, TaCKX6a02-D1, and TaSnRk2.3). Significant associations between the allelic variation and kernel traits were identifiedin TaCWI-4A (TW, GL, and GR), TaCWI-5D (TKW), TaGW2-6A (TKW, GL, GW, and GT), TaSus2-2B (TKW, GL, GW, and GT), and TaGS1a(TW). In contrast, we detected no significant association between the allelic variation of TaCwi-A1, TaTGW6-A1, TaSus1-7A, and TaSus1-7Band variations in kernel traits. Also, TaTGW-7A, TaCKX6-D1, TaCKX6a02-D1, and TaSnRK2.3 were found to be monomorphic. The fourloci TaCWI-4A, TaCWI-5D, TaGW2-6A, and TaSus2-2B showed significant phenotypic differences, a totalof 10 different haplotypes (AC1-AC10)were observed at four loci among the Korean wheat cultivars. Cultivars with the AC1 haplotype exhibited significantly higher TKW thanthose with the AC8 haplotype, which comprises alleles for high TKW at all four loci, indicating that additional loci controlling kernel weightmight be present in the high TKW cultivars.
염색체 도식화와 imputation에 의한 GBS 기반 여교잡 회복률 계산 정확도 증진 방법
Method for Improving Marker Selection Efficiency through a Graphical Representation of Molecular Markers
정혜리(Hye-ri Jeong),최준경(Junkyuoung Choe),이봉우(Bong-Woo Lee),이보미(Bo-Mi Lee),강윤주(Yun-Joo Kang),이정희(Jeong-Hee Lee),김지은(Ji-Eun Kim),남문(Moon Nam),박영훈(Young-Hoon Park),박민우(Minwoo Park),박기림(Girim Park),조성환(Sung-Hwan Jo)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
374-381 (8 pages)
자연과학>생활/식품과학
Abstract
Marker-assisted backcrossing is a powerful method for developing new cultivars. To develop genomic-wide markers, genotyping-by-sequencing(GBS) can be an efficient method. However, unrefined low-quality markers and missing data between markers can contribute to hamperingthe marker selection process, particularly in multi-way crosses. In this study, we aimed to calculate the recovery rate of offspring individualsand minimize errors that occur among a large number of markers. Initially, missing data were imputed by comparing samples using the k-nearestneighbor (k-NN) algorithm. Thereafter, low-quality single-nucleotide polymorphisms (SNPs) were corrected by applying the graphical representationmethod based on the k-NN algorithm in order of the SNPs in a chromosome designed for a multi-parental population. Four-way cross anddouble-backcrossed tomato BC1F1 (230 lines) and BC2F1 (96 lines) populations were genotyped by GBS. The genotype of samples of theBC1F1 and BC2F1 populations was determined based on the parental haplotype. Thus, the method of visualizing the genotype of offspringindividuals, generated via crosses of multiple parents, not only improves estimation of the recovery rate but also facilitates easier selectionin breeding programs.
한국 대표 밀 품종의 미숙배 채취 시기별 조직배양 효율
The Effects of Harvesting Time on the Efficiency of Tissue Culture Used Immature Embryos from Korean Wheat Cultivars
최창현(Changhyun Choi),손재한(Jae-Han Son),박진희(Jin Hee Park),김경민(Kyeong-Min Kim),김경훈(Kyeong-Hoon Kim),정한용(Han-Yong Jung),손지영(Ji-Young Shon),박태일(Tae-Il Park),강천식(Chon-Sik Kang)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
382-388 (7 pages)
자연과학>생활/식품과학
Abstract
The regeneration rate of plantlets cultivated via tissue culture is an important factor for wheat transformation. Similar to othermonocotyledons, the most efficient tissue culture materials for wheat are immature embryos. However, stable year-round production of immatureembryos is not possible in the field where various stress factors co-exist. In this study, we investigated the generation and subsequent plantletincident rates of callus induced from immature embryos obtained from different sowing times in 2020 and compared these among wheatcultivars. We found that the rates of regeneration and plantlet incidence obtained using immature embryos of the Ariheuk cultivar were higherthan those of other domestic cultivars, and that the tissue culture efficiency was similar to that of Bobwhite, which has been establishedas a cultivar with excellent transformation efficiency. Furthermore, the Baekkang cultivar showed high tissue culture efficiency only whensown from early to mid-March, whereas Keumkang showed higher tissue cultivation efficiency only by sowing in mid- and late February. Among the five cultivars assessed in this study, Jopum showed the lowest tissue culture efficiency. It is anticipated that the findings of thisstudy will contribute to enhancing the transformation efficiency of domestic wheat varieties.
국내 육성 벼 품종의 출수일수 및 간장 변이 분석
Days to Heading and Culm Length Variation of Korean Rice Varieties in Different Environments
이창민(Chang-Min Lee),권영호(Young-Ho Kwon),박향미(Hyang-Mi Park),정지웅(Ji-Ung Jeung),박현수(Hyun-Su Park),백만기(Man-Kee Baek),하수경(Su-Kyung Ha),모영준(Youngjun Mo)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
389-397 (9 pages)
자연과학>생활/식품과학
Abstract
Recent advances in high-throughput sequencing technologies have enabled large-scale cost-effective genotypic analyses, andconsequently, obtaining reliable phenotypic data has now become a major bottleneck in data-driven plant breeding. In order to construct aphenotype database for commercial rice varieties released by the National Institute of Crop Science, Rural Development Administration, weinitiated a systematic phenotype evaluation project, with the aim of investigating the major agronomic traits of Korean rice varieties releasedduring the period between 1979 and 2017. Despite the narrow genetic background, we found that the days to heading (DTH) and culm length(CL) of the 297 Korean rice varieties assessed exhibited wide phenotypic variation under different environments. Under normal planting cultivationin 2018, the DTH ranged from 48 to 104 days in Suwon, 46 to 111 days in Wanju, and 39 to 97 days in Miryang, with CL values rangingfrom 59 to 134 cm, 55 to 122 cm, and 57 to 106 cm, respectively. During early planting cultivation in 2019, the DTH ranged from 56to 113 days (Suwon), 58 to 109 days (Wanju), and 58 to 100 days (Miryang), with corresponding CL values ranging from 63 to 119 cm,55 to 93 cm, and 51 to 115 cm. Despite the difference of one month in planting dates in 2018 and 2019, DTH in the different years andregions showed highly significant positive correlations (r=0.90-0.98), whereas CL showed positive but weaker correlations (r=0.45-0.82). Furthermore, we detected a weak, although significant, correlation between DTH and CL in each environment (r=-0.18-0.35). Analyses ofadditive main effects and multiplicative interaction (AMMI) were conducted for DTH and CL to identify rice varieties with stable phenotypesunder different environments. We anticipate that the findings of this study will provide a useful rice phenotype database to facilitategenotype-phenotype association studies and data-driven rice breeding.
콩 소청2호의 균주 특이적인 역병 저항성 유전자좌
Two Isolate-specific Resistance Loci for Phytophthora sojae in the Soybean Socheong2
장영은(Young Eun Jang),장익현(Ik Hyun Jang),강인정(In Jeong Kang),김지민(Ji-Min Kim),강성택(Sung-Taeg Kang),이성우(Sungwoo Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
398-407 (10 pages)
자연과학>생활/식품과학
Abstract
Phytophthora root rot attributable to infection by the soil-borne oomycete Phytophthora sojae causes serious damage to susceptiblesoybeans grown in poorly drained soil. Management of this disease depends primarily on Rps (resistance to P. sojae) resistance genes. Theobjective of this study was to map resistance to two P. sojae isolates (40412 and 2457) in a Daepung × Socheong2 recombinant inbred linepopulation. Of these two varieties, Socheong2 is resistant to the two isolates, whereas Daepung is susceptible. Single-marker analysis of varianceand linkage analyses using a high-density genetic map identified different resistance loci for each isolate. A genomic region of 36.2~37.4Mbp on chromosome 3 was identified as being associated with resistance to isolate 40412, explaining 18% of the phenotypic variance (PV),whereas, a 2.1~2.6-Mbp region on chromosome 18 was significantly associated with resistance to isolate 2457, accounting for approximately26% of the PV. An additional region of 53.1~53.3 Mbp on chromosome 18 was also significantly associated with resistance to isolate 2457. All three loci coincide with genomic regions where an Rps gene or partial resistance have been mapped in previous studies. The respectivelocus showed significance for only one or the other of the isolates, indicating an isolate-specific interaction. From this finding, it can beinferred that isolates 40412 and 2457 are characterized by different avirulence genes, and that Socheong2 has at least two Rps genes thatinteract with each isolate. The finding of multiple Rps loci specific to an isolate within a single soybean genotype is a unique discovery. Socheong2 will accordingly be a useful genetic source for breeding resistance to multiple P. sojae isolates.
국산 빵용 밀 품종의 사워도우빵 특성 평가
Characteristics of Sourdough Breads Baked Using Korean Bread Wheats
박진희(Jin Hee Park),강천식(Chon-Sik Kang),김경민(Kyeong-Min Kim),양진우(Jinwoo Yang),손재한(Jae-Han Son),최창현(Chang-Hyen Choi),정한용(Han-Yong Jung),손지영(Ji-Young Son),박태일(Tae-Il Park),김경훈(Kyeong-Hoon Kim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
408-418 (11 pages)
자연과학>생활/식품과학
Abstract
This study was performed to evaluate the characteristics of wheat flour and sourdough bread quality of five Korean bread wheatcultivars, hard red winter wheat (HRW), and T55 (a French commercial wheat flour). Among the cultivars assessed, the protein and glutencontents and SDS-sedimentation values of Joongmo2008 were the highest, Keumkang were similar to those of HRW, and those of the Baekkang,Jokyung, and Hwanggeum were similar to those of T55. Joongmo 2008 and Keumkang had glutenin contents similar to those of HRW andT55, whereas Baekkang and Hwanggeum had higher HMW-GS (high molecular weight-glutenin subunit) and lower LMW-GS (low molecularweight-glutenin subunit) contents than HRW and T55. The α+β gliadin contents of Jungmo2008 and Keumkang were higher than thoseof other varieties and similar to those of HRW, whereas the γ- and ω-gliadin contents of Baekkang and Hwanggeum were similar to thoseof T55. Mixolab analysis revealed that Joongmo2008 and Keumkang had water absorption and kneading characteristics similar to those ofHRW, and that Baekkang, Hwanngeum, and Jokyung showed characteristics similar to those of T55. Campagne and baguettes prepared usingKorean wheat flour were similar in appearance to those prepared using T55 or HRW, the bread volume of campagne bread was smallerthan that of T55, and the volume of baguettes were similar to that of T55. Joongmo2008 showed a higher bread volume than other Koreanwheat cultivars, which was similar to that of HRW. The quality of sourdough bread prepared from Korean wheat flour was similar to thatmade with commercial flour, although the bread prepared using Joongmo2008 was found to be superior to that prepared using the flour ofother Korean wheat cultivars.
색소찰옥수수 근동질 계통들에 대한 형태적 특성 연구
Morphological Characteristics of Near-Isogenic Lines of Colored Waxy Maize
김해리(Hae Ri Kim),사규진(Kyu Jin Sa),박기진(Ki Jin Park),남궁민(Min Nam-Gung),모창연(Chang Yeun Mo),이주경(Ju Kyong Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
419-425 (7 pages)
자연과학>생활/식품과학
Abstract
In this study, 14 agricultural and phenotypic traits were used to analyze morphological variations among 10 near-isogenic lines (NILs)of colored waxy maize and 2 parental lines (HW3 and HW9) of the hybrid cultivar “Mibaek 2.” The results of principal component analysisindicated that on the first principal component axis, seed coat color, R value, V value, days of tasseling, L* value, and days of silking greatlycontributed to the positive direction, whereas anthesis-silking interval and leaf width greatly contributed to the negative direction. On thesecond principal component axis, kernel row number and tassel color contributed to the positive direction, whereas setted ear length, ear length,and 100-kernel weight contributed to the negative direction. Thus, the morphological characteristics that greatly contributed to the first andsecond principal components might be useful for discrimination among the 10 NILs and 2 parental lines of “Mibaek 2.” Of the 10 NILsanalyzed, 16CLP26 and 16CLP16 were considered useful breeding material for the development of colored waxy maize varieties with relativelyhigh amounts of yield and anthocyanin. Collectively, these results are expected to provide useful information for the development and selectionof lines for breeding colored waxy corn varieties at the Maize Research Institute, Gangwon-do Agricultural Research and Extension Services.
종실이 크면서도 쓰러짐과 탈립에 강한 검정콩 ‘태청’
Lodging and Pod Shattering Tolerance of Large-Seeded Black Soybean Cultivar ‘Taecheong’
서정현(Jeong Hyun Seo),한원영(Won Young Han),백인열(In Youl Baek),김홍식(Hong Sik Kim),김현태(Hyun Tae Kim),강범규(Beom Kyu Kang),고종민(Jong Min Ko),윤홍태(Hong Tai Yun),이병원(Byoung Won Lee),오재현(Jae Hyeon Oh),신상욱(Sang Ouk Shin),곽도연(Do Yeon Kwak)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
426-432 (7 pages)
자연과학>생활/식품과학
Abstract
‘Taecheong’ is a black soybean cultivar developed from crossing ‘YS1593(Milyang136 × Tanbaguro)’ and ‘Cheongja2’ in 2005. F1 and F2 populations were grown for 2 years and promising lines were selected by pedigree method from F3 to F5. The preliminary yieldtrial (PYT) and advanced yield trial (AYT) were conducted from 2012 to 2013, and a regional yield trial (RYT) in seven regions was conductedfrom 2014 to 2016. ‘Taecheong’ is determinate, with purple flower, green cotyledon, and black spherical seed. Flowering date and maturingdate were August 3 and October 20, respectively. Regarding quantitative characteristics, ‘Taecheong’ has a larger seed size (44.5 g/100-seedweight) than that of ‘Cheongja3’ (35.8 g/100-seed weight). ‘Taecheong’ was tolerant to pod shattering and lodging at the RYT field andindoor test. In addition, ‘Taecheong’ was resistant to bacterial pustule during the field test, and to soybean mosaic virus (G6H strain) duringthe inoculation test. Although its seed quality-related characteristics were similar to those of ‘Cheongja3’, it contained more anthocyanin inits seed-coat, which is a primary functional component of black soybean. The mean yield of ‘Taecheong’ in RYT was 240 kg/10a, whichwas 94% of the yield of ‘Cheongja3’. ‘Taecheong’ is expected to be used as raw material for soy products, such as for preparing soybeanchocolates, because of its large seed size (Registration number: 7104).
논 재배에 적합하고 맥주용 품질이 우수한 맥주보리 신품종 ‘다품’
A Malting Barley (Hordeum vulgare L.) Variety, ‘Dapum’, with Suitable Yield in Paddy Fields and Enhanced Brewing Quality
윤영미(Young-Mi Yoon),박종호(Jong-Ho Park),김양길(Yang-Kil Kim),김태헌(Tae-Heon Kim),강천식(Chon-Sik Kang),김경호(Kyong-Ho Kim),정영근(Young-Keun Cheong),박종철(Jong-Chul Park)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
433-440 (8 pages)
자연과학>생활/식품과학
Abstract
We developed a malting barley, ‘Dapum’, with stable yield and enhanced quality for brewing. ‘Dapum’ was developed in 2015,by crossing Hopum, which has high brewing quality, and ‘GobDH96’, which has steady yield. The regional yield trials were conducted for‘Dapum’ as a breeding line ‘Iksan173’ in four different regions from 2013 to 2015. It has a type I growth habit, and the average headingand maturing date in paddy fields were April 20 and May 26, respectively, which were 1 day earlier than those of ‘Hopum’. The yield potentialof ‘Dapum’ was 411 kg/ha, which is approximately 10% higher than those of ‘Hopum’ under paddy field condition. ‘Dapum’ possesses therym5 gene and is resistant to barley yellow mosaic virus (BaYMV), although susceptible to powdery mildew and lodging tolerance. It issimilar to ‘Hopum’ in terms of enhanced brewing quality. ‘Dapum’ had a higher 1,000-grain weight (46.1 g) and assortment ratio (92%)than those of ‘Hopum,’ at 43.8 g and 90%, respectively. Analysis of grain quality for malting showed that ‘Dapum’ has high quality proteincontent, β-glucan content, and water sensitivity. Malt quality analysis revealed that ‘Dapum’ has 73.3% extraction rate, 3.7% soluble proteincontent, 32.6% Kolbach index, 244 WK (Windisch-Kolbach) diastatic power, and 80.2% friability, which were similar to those of ‘Hopum’. It would be suitable for cultivation in the zones of Korea that have a daily minimum temperature of -4℃ in January (Registration No. 7512).
완전미율이 높고 숙색이 좋은 벼 ‘상보(上寶)’
Breeding of a Rice Variety, ‘Sangbo’, with High Head Rice Grain Ratio and Good Ripened Grain Color
박노봉(No-Bong Park),여운상(Un-Sang Yeo),이지윤(Ji-Yoon Lee),박동수(Dong-Soo Park),이종희(Jong-Hee Lee),조준현(Jun-Hyun Cho),송유천(You-Chun Song),오성환(Seong-Hwan Oh),손영보(Young-Bo Son),장재기(Jae-Ki Chang)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
441-447 (7 pages)
자연과학>생활/식품과학
Abstract
‘Sangbo’ is a japonica rice (Oryza sativa L.) variety with high head rice grain ratio and good ripened grain color, as well as resistance to rice dwarf virus (RDV) and bacterial blight disease (BB). It was developed by the rice breeding team of the Yeongdeok Branch of the National Institute of Crop Science, RDA, Korea, in 2015. This variety was derived in the 2002 summer season from a cross between ‘Yeongdeog32’, with high eating quality, and ‘Nampyeong’, with a high milling ratio. In 2012, a promising line, YR24256-142-5-3-1-1-2, selected by the pedigree breeding method, was designated the name, ‘Yeongdeog59’. After performing a local adaptability test at nine locations from 2013 to 2015, ‘Yeongdeog59’ was released with the name ‘Sangbo’ in 2015. ‘Sangbo’ has a culm length of 77 cm and a medium-late growth duration. This variety was resistant to K1, K2, and K3 races of bacterial blight, along with the dwarf virus, and was moderately resistant to leaf blast disease. Based on the results of a panel test, ‘Sangbo’ has translucent and clear milled rice kernel without white core and belly rice, and good eating quality. The yield potential of ‘Sangbo’ in milled rice was approximately 6.21 MT/ha at the ordinary fertilizer level of the local adaptability test (LAT). This cultivar would be adaptable to the middle plain, south plain, Yeongnam plain, east coastal area, and south mid-mountainous areas of Korea (Registration No. 7284, 2018.06.25).
춘파 적응성 내도복 다수성 겉보리‘호향’
Development of a Covered Barley (Hordeum vulgare L.) Cultivar, ‘Hohyang’, with High Yield and Spring Sowing Adaptability
김양길(Yang-Kil Kim),윤영미(Young-Mi Yoon),박종호(Jong-Ho Park),김경호(Kyong-Ho Kim),강천식(Chon-Sik Kang),박태일(Tae-il Park),오세관(Sea-kwan Oh)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
448-453 (6 pages)
자연과학>생활/식품과학
Abstract
A new six-rowed covered barley cultivar ‘Hohyang’ with spring sowing adaptability, lodging tolerance, and high yield was developedfrom the cross between ‘Saegangbori’ and ‘Durubori’ by the National Institute of Crop Science, RDA, Korea, in 2016. It has a compactspike and long awn, and its growth habit (vernalization requirement) was classified as group II. The averaged heading date was April 21,which was 1 day earlier than that of the control varietal, ‘Olbori’. The culm length was 78 cm, which was similar to that of ‘Olbori’; however,‘Hohyang’ has a stronger lodging tolerance. Its spike length was 4.7 cm, 655 spikes/m2, 55 grains/spike, and 31.9 g for 1,000 grains. Italso showed similar winter hardiness and a superior resistance to barley yellow mosaic virus (BaYMV) compared to that of ‘Olbori’. ‘Hohyang’was well adapted to spring sowing conditions from March 6 to April 3. Regarding quality, ‘Hohyang’ had the same protein and β-glucancontent as ‘Olbori’, but higher polyphenol content than the control cultivar. The yield of ‘Hohyang’ in the regional yield trial was 6.68 ton/hain upland zones, and 5.06 ton/ha in paddy fields, which were 6% and 15% higher than those of the control cultivar, respectively. If thereis rain during the fall planting season, ‘Hohyang’ is suitable for sowing and cultivation in spring (Registration No. 7374).
다수성 종간교잡 감초 신품종 ‘원감’
‘Wongam’, a Licorice Interspecific Hybrid Cultivar with High Yield
이정훈(Jeong-Hoon Lee),오명원(Myeong-Won Oh),이상훈(Sang-Hoon Lee),박춘근(Chun-Geon Park),정진태(Jin-Tae Jeong),한종원(Jong-Won Han),마경호(Kyung-Ho Ma),장재기(Jae-Ki Chang)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
454-459 (6 pages)
자연과학>생활/식품과학
Abstract
A new interspecific hybrid cultivar, Wongam, was developed as a high-yield licorice from a Glycyrrhiza glabra × G. uralensis (G. korshinski Grig.) cross by the herbal crop team at the National Institute of Horticultural and Herbal Science, Rural Development Administration,Korea. The plant type is erect, and the leaf shape is oval. It has well-developed vascular bundles compared to G. uralensis as a controlspecies. The dried root weight of ‘Wongam’ was 54.6 g per plant, and 22.7 g per plant in the control species G. uralensis. In addition,the average yield of ‘Wongam’ was 359 kg/10a, which was 127% higher than that of G. uralensis. It exhibits resistance to brown spot disease,as well as a to lodging. The glycyrrhizin and liquiritigenin content of ‘Wongam’ are 3.96% and 0.8%, respectively, which meets the KoreanPharmacopoeia Standards. This cultivar can widely adapt to most cultivation zones found in Korea, except for the Gangwon-do Province region(Registration No. 196).
휴면기간이 짧고 역병에 강한 황색 감자 신품종 ‘강선’
‘Gangseon’, a Yellow Potato Variety with Short Dormancy and Late Blight Resistance
조지홍(Ji-Hong Cho),최장규(Jang-Gyu Choi),이영규(Young-Gyu Lee),임주성(Ju-Sung Im),한선경(Seon-Kyeong Han),김성용(Sung-Ryong Kim),문애경(Ae-Kyung Moon),장동칠(Dong-Chil Chang),진용익(Yong-Ik Jin),박현진(Hyun-Jin Park),서진희(Jin-Hui Seo),이규빈(Gyu-Bin Lee),천충기(Chung-Ki Cheon),박영은(Young-Eun Park),조광수(Kwang-Soo Cho)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.52 NO.4/ 2020
460-466 (7 pages)
자연과학>생활/식품과학
Abstract
A new double cropping potato variety, ‘Gangseon’, was bred by the Highland Agriculture Research Institute, National Instituteof Crop Science (NICS), RDA, Korea, in 2016. ‘Gangseon’ was obtained from the cross between ‘Daegwan1-83’ and ‘Chubaek’ in 2006. Seedling and line selection was performed from 2008 to 2009, and preliminary and advanced yield trials were carried out with ‘Gangseon’from 2010 to 2013 in Gangneung city. The regional yield trials were conducted in Gangneung, Muan, and Jeju from 2014 to 2016. ‘Gangseon’has light purple flowers, green narrow leaflets and petioles with medium anthocyanin coloration, round tubers with yellow russet skin, andyellow flesh. The dormancy of ‘Gangseon’ stored in 20 ℃ was 60-70 days after harvesting, which is longer than those of ‘Dejima’ and‘Chubaek’, but shorter than that of ‘Superior’. The average yields of tubers in the spring and fall seasons were 36.6 and 21.2 ton·ha-1,respectively, in the regional yield trials. It is susceptible to common scab and potato virus Y, but has high resistance to potato leaf rollvirus, potato virus X, early blight, and late blight. The dry matter contents were 22.1% in spring and 19.8% in autumn. The adaptation areaof ‘Gangseon’ is the southern coastal area, including Jeju Island, Korea. The plant variety protection right of ‘Gangseon’ was registered inApril 2020, and its grant number is 8081.
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