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KOREAN JOURNAL OF BREEDING SCIENCE

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신육종 기술 및 작물 개발 동향
Current Status of New Plant Breeding Technologies and Crop Development
박상렬(Sang-Ryeol Park),박지희(Jihee Park),임선형(Sun-Hyung Lim),이종렬(Jong-Yeol Lee),김범기(Beom-Gi Kim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
161-174 (14 pages)
자연과학>생활/식품과학
Abstract
In recent years, new plant breeding technologies (NPBT) have had enormous effects on breeding and the agricultural industry. In particular, genome editing technology, including site-directed nuclease technologies, has progressed dramatically since the first-generation Zinc finger nucleases to the third-generation clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9 (CRISPR/Cas9). CRISPR/Cas9 technology has yielded a revolutionary breakthrough in the accurate, efficient, and user-friendly genome editing of eukaryotes. Several methods for basic research and applications, such as knock-out, base editing, gene targeting, and transcriptional activation or repression have been derived from CRISPR/Cas9 technology. Herein, we will describe the current progress in NPBTs and also summarize the crops developed by NPBTs. After analyzing the current status of NPBTs and crop development, we have proposed potential strategies for crop development using NPBTs.
유전자교정 농작물의 실용화 현황 및 전망
Gene-Edited Crops: Present Status and their Future
박수철(Soo-Chul Park),정영희(Young-Hee Joung),김경민(Kyung-Min Kim),김주곤(Ju-Kon Kim),고희종(Hee-Jong Koh)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
175-183 (9 pages)
자연과학>생활/식품과학
Abstract
Recently, several attempts have been undertaken to develop breeding technologies by combining new biotechnologies. Gene-editing technology is currently one of the most interesting areas. The plant breeding methods using this technique have the advantage of greatly improved accuracy and efficiency of the plant genetic correction compared with conventional breeding methods, which has raised expectations for the useful application of this technology as a cutting-edge breeding technology. Although not all countries around the world currently have established appropriate regulation policies on crops developed with gene-editing technology, the number of cases in which GMO regulations are not applied on a case-by-case basis according to the scientific background is growing. However, Korea has not yet established policies on which criteria should be applied to crops generated from the application of gene-editing technology. As the number of cases of crop development and commercialization using gene-editing technology is expected to increase in the near future, it will be necessary to prepare reasonable policies to support developers and seed industries in Korea to ensure harmonization with international regulatory policy trends.
들깨, 차조기 간 교잡에 의해 육성한 F₂ 집단에 대한 유전 분석
Genetic Analysis of F₂ Population Derived from the Cross Between Perilla Frutescens var. Frutescens and var. Crispa
임수은(Su Eun Lim),사규진(Kyu Jin Sa),하예주(Ye Ju Ha),이주경(Ju Kyong Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
184-189 (6 pages)
자연과학>생활/식품과학
Abstract
In this study, genetic analysis was conducted on the inheritance of qualitative traits, such as leaf color, flower color, seed size, and seed hardness, in the F₂ population derived from the cross between var. frutescens and var. crispa. As determined by the separation pattern of each trait in the F₂ population, F₂ plants with a green color were more common than those with a purple color on the leaf surface, whereas F₂ plants with a purple color were more common than those with a green color on the reverse side of the leaf. For flower color, more F₂ plants were observed to have a white color. For seed size, more F₂ plants were observed to have a seed size of above 2 mm, and for seed hardness, more F₂ plants were observed to have characteristics of seed hardness. Our examination of the genetic separation ratios with respect to Mendel’s law of genetics revealed that three traits, leaf color (surface and reverse side) and flower color, did not follow the separation ratio of 1:2:1, and the seed size did not follow the segregation ratio of 3:1, but seed hardness was found to follow the separation ratio of 3:1. The results of this study are expected to provide basic information to help understand the genetic segregation of leaf and seed characteristics in the F₂ population derived from the cross between var. frutescens and var. crispa, and also to provide useful information for breeding studies to assist the development of varieties of Perilla crop.
새누리 벼 품종 배경 lipoxygenase-3 결핍 자포니카 근동질계통 개발
Development of Near-Isogenic Line of japonica Rice Cultivar Saenuri without Lipoxygenase-3
박현수(Hyun-Su Park),이건미(Keon-Mi Lee),김기영(Ki-Young Kim),김정주(Jeong-Ju Kim),신운철(Woon-Cheol Shin),백만기(Man-Kee Baek),김춘송(Choon-Song Kim),박슬기(Seul-Gi Park),이창민(Chang-Min Lee),서정필(Jung-Pil Suh),조영찬(Young-Chan Cho)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
190-200 (11 pages)
자연과학>생활/식품과학
Abstract
It is reported that the absence of lipoxygenase-3 (LOX-3) may contribute to a reduction in stale flavor after the storage of rice. To improve the quality of stored rice of the Korean japonica rice cultivar, we conducted a breeding program to develop near-isogenic rice without LOX-3 in the genetic background of Saenuri, a mega variety of Korea. In the first step of the breeding program, we used a donor parent of LOX-3 null, Daw Dam, and a recurrent japonica parent, Sindongjin, to develop HR27873-AC12 by backcross (BC1), color test for introgression of lox-3, and anther culture for rapid fixation. In the second step, we used the donor parent, HR27873-AC12, and the recurrent parent, Saenuri, to develop HR28896-31-3-1-1 by backcross (BC1), marker-assisted selection (MAS) for lox-3, and phenotypic selection (PS) for agronomic traits. Finally, in the third step, we developed HR30960-186-2-1-2-1 (Jeonju624), derived from a cross between Saenuri and HR28896-31-3-1-1, by MAS for lox-3 and PS with high selection pressure for agronomic characteristics. Jeonju624 was confirmed with the introgression of lox-3 by molecular marker. Jeonju624 was a mid-late maturing rice with similar agronomic characteristics to Saenuri, lodging tolerance with short culm, erect plant architecture, and resistance to bacterial blight and rice stripe virus. The yield components of Jeonju624 were mostly similar to Saenuri, except for the 1,000-grain weight of brown rice. The appearance of the grain of Jeonju624 was better than that of Saenuri, and the characteristics of cooked rice were similar to those of Saenuri. In the genetic background analysis using 406 KASP (Kompetitive Allele-Specific PCR) markers, Jeonju624 was confirmed to be the near-isogenic line (NIL) of Saenuri with a 95.8% recovery rate. Jeonju624 is the NIL of Saenuri without LOX-3, and overcomes the linkage drag of Daw Dam with similar agronomic characteristics and genetic background to Saenuri. Jeonju624 can be utilized as a practical cultivar to improve the quality of stored rice, breeding material for the introgression of lox-3, and genetic material to elucidate the effect of introgressed genes.
국내 유통국화의 품종판별체계 및 유연관계 연구를 위한 EST_SSR마커 개발
Development of EST-SSR Markers for Cultivar Determination and Genetic Diversity Studies of Commercial Chrysanthemums in the Korean Floral Market
한정윤(Jeong-Yun Han),김정분(Jung-Bun Kim),이호진(Ho-Jin Lee),홍창표(Chang Pyo Hong),박하승(Ha-Seung Pak),김태성(Tae-Sung Kim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
201-212 (12 pages)
자연과학>생활/식품과학
Abstract
Chrysanthemum morifolium Ramat. is one of the major flowering crop plants worldwide. However, domestic chrysanthemum markets have recently faced a downturn. To stimulate related industries, breeding technologies and efficient protection systems using molecular markers must be established. However, high cost and intensive efforts are required to develop useful molecular markers for the chrysanthemum as it is a polyploid crop with highly complex genome organization. Thus, the aim of this research was to develop expressed sequence tag-based simple sequence repeat (EST-SSR) markers, which are applicable to the chrysanthemum breeding program and cultivar protection, based on next-generation sequencing technology. From the RNAseq data of the standard chrysanthemum cultivars ‘Jungwoon’ and ‘Seinoisei,’ we identified 31,121 SSR loci and further retrieved 1,846 polymorphic SSRs. To test the marker efficiency of the 1,846 SSRs, we first chose 50 of the SSRs and designed primers by using the flanking sequences. It is noted that the nine EST_SSR markers show a single band-like amplicon, which can be exploited in various genetic studies. We proceeded to polymorphism tests for those SSRs with 56 chrysanthemum cultivars, confirming that the average polymorphism index content (PIC) was 0.69±0.058. Among those, we found that six SSRs were sufficient to specify the genetic identities of 55 chrysanthemum cultivars, which may be useful for protections of the related cultivars, as well as breeding programs, in the future.
중간신육형 검정종피 동부 품종 ‘선현’
A Description of Plant and Seed Morphology of the Cowpea Cultivar ‘Seonhyeon’
김동관(Dong-Kwan Kim),최진경(Jin-Gyung Choi),김선곤(Seon-Gon Kim),이경동(Kyung-Dong Lee),서민정(Min-Jung Seo),강범규(Beom-Kyu Kang),하태정(Tae-Jeong Ha)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
209-213 (5 pages)
자연과학>생활/식품과학
Abstract
A cowpea cultivar Vigna unguiculata L. Walp ‘Seonhyeon’ is a cross species between V. unguiculata ‘IT145373’ and V. unguiculata ‘IT101362’ developed at the Jeollanamdo Agricultural Research and Extension Services (JARES) in 2017. ‘Seonhyeon’ is an erect plant with an intermediate plant habit, green hypocotyls, light purple-colored corolla, heart-shaped leaflets, black seed surface, and straight, brown mature pods. The anthocyanin content of ‘Seonhyeon’ was 1,632 μg/g, and it contained seven anthocyanins, including cyanidin-3-glucoside and delphinidin-3-glucoside. The stem length of ‘Seonhyeon’ was 54 cm, which was 13 cm longer than that of the control cultivar ‘Okdang’. Its 100-seed weight was 11.8 g, which was 3.6 g lighter than that of the control cultivar. Field resistance of ‘Seonhyeon’ to leaf and systemic diseases was similar to that of the control cultivar, whereas its field resistance to lodging was slightly lower compared to that of the control cultivar. The average yield of ‘Seonhyeon’ was 2.26 ton/ha, which was 15% higher compared to that of control cultivar. Black seed coat of the ‘Seonhyeon’ cultivar is expected to contribute to species specialization as well as to development of various processed products. (Registration number: 7499)
내도복 다수성 기계수확 적응 소립 나물용 콩 ‘아람’
Lodging-Tolerant, High Yield, Mechanized-Harvest Adaptable and Small Seed Soybean Cultivar ‘Aram’ for Soy-sprout
강범규(Beom Kyu Kang),김현태(Hyun Tae Kim),고종민(Jong Min Ko),윤홍태(Hong Tai Yun),이영훈(Young Hoon Lee),서정현(Jeong Hyun Seo),정찬식(Chan Sik Jung),신상욱(Sang Ouk Shin),오은영(Eun Yeong Oh),김홍식(Hong Sik Kim),오인석(In Seok Oh),백인열(In Youl Baek),오재현(Jae Hyun Oh),서민정(Min Jeong Seo),양우삼(Woo Sam Yang),김동관(Dong Kwan Kim),곽도연(Do Yeon Gwak)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
214-221 (8 pages)
자연과학>생활/식품과학
Abstract
‘Aram’ is a soybean cultivar developed for soy-sprout. It was developed from the crossing of ‘Bosug’ (Glycine max IT213209) and ‘Camp’ (G. max IT267356) cultivars in 2007. F₁ plants and F₂ population were developed in 2009 and 2010. A promising line was selected in the F5 generation in 2011 using the pedigree method and it was evaluated for agronomic traits, yield, and soy-sprouts characteristics in a preliminary yield trial (PYT) in 2012 and an advanced yield trial (AYT) in 2013. Agronomic traits and yield were stable between 2014 and 2016 in the regional yield trial (RYT) in four regions (Suwon, Naju, Dalseong, and Jeju). Morphological characteristics of ‘Aram’ are as follows: determinate plant type, purple flowers, grey pubescence, yellow pods, and small, yellow, and spherical seeds (9.9 g 100-seeds⁻¹) with a light brown hilum. The flowering date was the 5th of August and the maturity date was the 15th of October. Plant height, first pod height, number of nods, number of branches, and number of pods were 65 cm, 13 cm, 16, 4.5, and 99, respectively. In the sprout test, germination rate and sprout characteristics of ‘Aram’ were comparable to that of the ‘Pungsannamulkong’ cultivar. The yield of ‘Aram’ was 3.59 ton ha⁻¹ and it was 12% higher than that of ‘Pungsannamulkong’ in southern area of Korea. The yield of ‘Aram’ in the Jeju region, which is the main region for soybean sprout production, was 20% higher than that of ‘Pungsannamulkong’. The height of the first pod and the tolerance to lodging and pod shattering, which are connected to the adaptation to mechanized harvesting, were higher in ‘Aram’ compared to those in ‘Pungsannamulkong’. Therefore, the ‘Aram’ cultivar is expected to be broadly cultivated because of its higher soybean sprout quality, and seed yield and better adaptation to mechanized harvesting. (Registration number: 7718)
벼흰잎마름병 저항성 고품질 중생 벼 ‘해품’
Bacterial Blight-Resistant Medium Maturing Rice Cultivar ‘Haepum’ with High Grain Quality
남정권(Jeong-Kwon Nam),박현수(Hyun-Su Park),백만기(Man-Kee Baek),조영찬(Young-Chan Cho),김우재(Woo-Jae Kim),김정주(Jeong-Ju Kim),김보경(Bo-Kyeong Kim),김기영(Ki-Young Kim),신운철(Woon-Chul Shin),고종철(Jong-Cheol Ko),이건미(Gun-Mi Lee),박슬기(Seul-Gi Park),이창민(Chang-Min Lee),김춘송(Choon-Song Kim),서정필(Jung-Pil Suh),이점호(Jeom-Ho Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
222-233 (12 pages)
자연과학>생활/식품과학
Abstract
‘Haepum’ is a bacterial blight-resistant, medium maturing rice cultivar with high grain quality. It was derived from a cross between ‘Iksan493’ (cultivar name ‘Jinbaek’) and the F1 cross between ‘Iksan495’ (‘Dacheong’) and ‘Iksan496’ (‘Jungmo1005’). Of these three cultivars, ‘Jinbaek’ is a bacterial blight-resistant mid-late maturing rice cultivar with high grain quality, ‘Dacheong’ is a mid-late maturing rice cultivar with multiple resistance to disease and insects, and ‘Jungmo1005’ is a mid-late maturing rice cultivar with lodging tolerance. To develop fixed lines, the anther culture method was applied to F1 plants. The cultivar ‘Haepum’ was selected using the pedigree method, yield trials, and local adaptability tests. The heading date of ‘Haepum’ was August 11th, three days earlier than that of ‘Nampyeong’ cultivar. Haepum’ is a cultivar tolerant to lodging and it has short culms. Due to its low rate of viviparous germination, ‘Haepum’ could be useful for preventing pre-harvest sprouting in cultivation of medium maturing rice in the southern plain area of Korea. ‘Haepum’ carries two bacterial blight resistance genes (Xa3 and xa5), and in our study, it exhibited high-level and broad-spectrum resistance against bacterial blight, including K3a, the most virulent race in Korea. ‘Haepum’ is also resistant to the rice stripe virus and moderately resistant to rice blast. The yield of ‘Haepum’ was similar to that of ‘Nampyeong’. ‘Haepum’ showed excellent grain appearance and good taste of cooked rice, and therefore it could contribute to the development of bacterial blight-resistant rice cultivars of improved quality. ‘Haepum’ would be suitable for cultivation in the southern plain area of Korea as well as in bacterial blight-prone areas. (Registration No. 6068)
현미밥 식감이 부드러운 중생종 벼 ‘보드라미’
‘Bodrami’, Mid-Maturing Brown Rice Cultivar with High Grain Quality and Soft Texture Suitable for Cooking
김우재(Woo-Jae Kim),강경호(Kyeong-Ho Kang),정종민(Jong-Min Jeong),모영준(YoungJun Mo),김보경(Bo-Kyeong Kim),정지웅(Ji-Ung Jeung)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
234-243 (10 pages)
자연과학>생활/식품과학
Abstract
‘Bodrami’ is a brown rice cultivar suitable for cooking, developed by crossing ‘Hwaseong’ and ‘Congsengla’ cultivars at Rural Development Administration, Korea, in 2003. Cooked brown rice of ‘Bodrami’ naturally has a soft texture, and after 24 hours of warm treatment, it maintained its soft texture and it was evaluated that the taste and texture of cooked brown rice were better than that of another rice cultivar. ‘Bodrami’ is a mid-maturing rice cultivar. The average heading date in ordinary planting was August 11th in Suwon, Korea, which also exhibits strong to blast leaf and rice stripe virus, and brown rice yield of ‘Bodrami’ had a yield of 5.56 MT/ha in ordinary planting. The advantages of eating brown rice are high intake of GABA (which is excellent for controlling blood), 𝛾-oryzanol (which is good for Antioxidation), rice embryos (rich in fiber), and rice bran (rich in minerals). Another advantage of ‘Bodrami’ is that, compared to glutinous rice varieties (which is a higher glycemic index), it has a lower glycemic index and a smooth texture. The consumption of white rice has been decreasing recently, while interest in brown rice has been increasing as a consequence of these advantages. ‘Bodrami’ was developed in response to recent changes in consumption preferences. (Registration No. 5644)
중만생 고품질 오갈병 저항성 벼 ‘신보(新寶)’
‘Sinbo’ - A High-Quality Rice Cultivar with Dwarf Virus Resistance
박노봉(No-Bong Park),김정일(Jeong-Il Kim),여운상(Un-Sang Yeo),이지윤(Ji-Yoon Lee),권오덕(Oh-Deog Kwon),박동수(Dong-Soo Park),이종희(Jong-Hee Lee),조준현(Jun-Hyun Cho),송유천(You-Cheon Song),김상열(Sang-Yeol Kim),오성환(Seong-Hwan Oh),손영보(Young-Bo Son),장재기(Jae-Ki Chang),신문식(Mun-Sik Shin),남민희(Min-Hee Nam)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
244-250 (7 pages)
자연과학>생활/식품과학
Abstract
Oryza sativa ‘Sinbo’ is a cultivar of japonica rice with good eating quality as well as resistance to rice dwarf virus (RDV) and bacterial blight disease (BB). It was developed in 2013 by the rice breeding team of Yeongdeok Branch, National Institute of Crop Science, RDA, Korea. This cultivar was derived from a cross between ‘Yeongdeog34‘, a cultivar with good eating quality, and ‘Saekyehwa’, a cultivar of a good plant type, in summer of 2002. A promising line (YR24264-25-3-2) selected using the pedigree breeding method was designated as ‘Yeongdeog55’ in 2010. After carrying out the local adaptability test at nine locations from 2011 to 2013, ‘Yeongdeog55’ was published under the name of ‘Sinbo’ in 2013. ‘Sinbo’ is a medium-late maturing cultivar with a short culm length of 70 cm. This cultivar is resistant to K1, K2, and K3 races of bacterial blight as well as to dwarf virus, and it is moderately resistant to leaf blast disease. The results of the panel test indicated that ‘Sinbo’ has translucent and clear milled rice kernel without white core and belly rice as well as good eating quality. The yield potential of ‘Sinbo’ was approximately 5.67 MT/ha at the ordinary fertilizer level in the local adaptability test (LAT). This cultivar could be adaptable to the middle plain, south plain, Yeongnam plain, east costal area, and south mid-mountainous area of South Korea. (Registration No. 5643)
밥맛이 우수한 경기지역 적응 중만생종 벼 ‘참드림’
‘Chamdream’, A Medium-Late Maturing and Good Eating-Quality Rice Cultivar Highly Suitable for Growing in the Gyeonggido Province, South Korea
장정희(Jung-Hee Jang),이종형(Jong-Hyeong Lee),한상욱(Sang-Wook Han),이지혜(Ji-Hye Lee),장재은(Jae-Eun Jang),서재순(Jae-Soon Seo),원태진(Tae-Jin Won),최병열(Byoung-Rourl Choi),지정현(Jung-Hyeun Ji),박인태(In-Tae Park),도현용(Hyeun-Yong Do),최해춘(Hae-Chun Choi),김광호(Gwang-Ho Kim),정응기(Eung-Gi Jeong),원용재(Yong-Jae Won)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
251-257 (7 pages)
자연과학>생활/식품과학
Abstract
‘Chamdream’ is a medium-late maturing, high-quality rice cultivar developed in 2014 by the crop breeding team of Crop Research Division, GARES, Hwaseong, Korea, in cooperation with the rice breeding team of the National Institute of Crop Science, RDA, Korea. ‘Chamdream’ was first developed in 2004 from a backcross between the F1 hybrid ‘Samgwang/Jojeongdo’ and ‘Samgwang’ cultivar. The heading date of this cultivar is August 17th in Gyeonggido Province. Its culm length is 79 cm and it has 15 panicles per hill and 115 spikelets per panicle. It is a medium-grain brown rice cultivar with a weight of 22.9 g per 1,000 grains. Its cold tolerance is lower than that of ‘Hwaseongbyeo’ and its degree of lodging tolerance is similar to that of ‘Hwaseongbyeo’. This cultivar is resistant to bacterial leaf blight and stripe virus diseases and moderately resistant to rice blast diseases, but it is susceptible to other virus diseases and pests. The appearance of milled ‘Chamdream’ rice is clear and its protein content is 5.4%, which is lower than that of ‘Hwaseongbyeo’. The palatability of cooked ‘Chamdream’ rice is better than that of ‘Chucheongbyeo’ which is mainly cultivated in Gyeonggido. Its milling ratio is 76.8% which is higher than that of ‘Hwaseongbyeo’. The yield of milled ‘Chamdream’ rice was 5.9 MT/ha in the local adaptability tests in standard cultivation in four regions from 2012 to 2014. ‘Chamdream’ is highly adaptable to the environmental conditions of Gyeonggido Province, especially to the southern region of Han River.(Registration No. 6065)
Breeding of Cymbidium ‘Sale Bit’ with Bright Yellow Flowers and Floral Scent
Breeding of Cymbidium ‘Sale Bit’ with Bright Yellow Flowers and Floral Scent
박부희(Pue Hee Park),람야(Mummadireddy Ramya),안혜련(Hye Ryun An),박필만(Pil Man Park),이수영(Su Young Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
258-262 (5 pages)
자연과학>생활/식품과학
Abstract
Oriental Cymbidium ‘Sael Bit’ cultivar was developed as a hybrid in 2013 by the National Institute of Horticultural & Herbal Science, Rural Development Administration, Suwon, Korea. This hybrid was developed from a cross between C. faberi ‘Ilgyounguhwa’ and C. 98CD05-1’ in 2002. C. ‘Ilgyounguhwa’ has a sweet floral scent, and C. 98CD05-1’ was obtained from a germplasm from Vietnam. After the cross and successful planting and acclimatization in a greenhouse, 72 seedlings were obtained. In 2007, one line was selected on the basis of flower color, leaf shape, flower stalk, and vigorous growth, and it was named ‘Wongyuo F1-37’. The line with the code ‘02-0428-33’ had consistent uniformity and excellent characteristics. The line selected after the evaluation of secondary characteristics was named ‘Sael Bit’. This hybrid has bright yellow and green colored petals (GY1B), red spot lips (R53A), and a pleasant fragrance. Flower and plant size of ‘Sael Bit’ are medium and it has approximately 9.1 flowers per stalk, which can be considered as a good spike habit. Petals and sepals are generally narrow and acute and the inflorescence is erect. Under optimal culture condition, flowers start blooming in late October. (Registration No. 5754)
벼흰잎마름병 저항성 유전자 집적 고품질 중만생 벼 ‘신진백’
Bacterial Blight Resistance Genes Pyramided in Mid-Late Maturing Rice Cultivar ‘Sinjinbaek’ with High Grain Quality
박현수(Hyun-Su Park),김기영(Ki-Young Kim),백만기(Man-Kee Baek),조영찬(Young-Chan Cho),김보경(Bo-Kyeong Kim),남정권(Jeong-Kwon Nam),신운철(Woon-Chul Shin),김우재(Woo-Jae Kim),고종철(Jong-Cheol Ko),김정주(Jeong-Ju Kim),정종민(Jong-Min Jeong),정지웅(Ji-Ung Jeung),이건미(Keon-Mi Lee),박슬기(Seul-Gi Park),이창민(Chang-Min Lee),김춘송(Choon-Song Kim),서정필(Jung-Pil Suh),이점호(Jeom-Ho Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
263-276 (14 pages)
자연과학>생활/식품과학
Abstract
‘Sinjinbaek’ is a bacterial blight (BB)-resistant, mid-late maturing rice cultivar with high grain quality. To diversify the resistance genes and enhance the resistance of Korean rice cultivars against BB, ‘Sinjinbaek’ was developed from a cross between ‘Iksan493’ (cultivar name ‘Jinbaek’) and the F1 cross between ‘Hopum’ and ‘HR24670-9-2-1’ (‘HR24670’). ‘Jinbaek’ is a BB-resistant cultivar with two BB resistance genes, Xa3 and xa5. ‘Hopum’ is a high grain quality cultivar with the Xa3 resistance gene. ‘HR24670’ is a near-isogenic line that carries the Xa21 gene, a resistance gene inherited from a wild rice species O. longistaminata, in the genetic background of japonica elite rice line ‘Suweon345’. ‘Sinjinbaek’ was selected through the pedigree method, yield trials, and local adaptability tests. Using bioassay for BB races and DNA markers for resistance genes, three resistance genes, Xa3, xa5, and Xa21, were pyramided in the ‘Sinjinbaek’ cultivar. ‘Sinjinbaek’ exhibited high-level and broad-spectrum resistance against BB, including the K3a race, the most virulent race in Korea. ‘Sinjinbaek’ is a mid-late maturing rice cultivar tolerant to lodging. It has multiple disease resistance against BB, rice blast, and stripe virus. The yield of ‘Sinjinbaek’ was similar to that of ‘Nampyeong’. ‘Sinjinbaek’ showed excellent grain appearance, good taste of cooked rice, and enhanced milling performance, and we concluded that it could contribute to improving the quality of BB-resistant cultivars. ‘Sinjinbaek’ was successfully introgressed with the Xa21 gene without the linkage drag negatively affecting its agronomic characteristics. ‘Sinjinbaek’ improved the resistance of Korean rice cultivars against BB by introgression of a new resistance gene, Xa21, as well as by pyramiding three resistance genes, Xa3, xa5, and Xa21. ‘Sinjinbaek’ would be suitable for the cultivation in BB-prone areas since it has been used in breeding programs for enhancing plants’ resistance to BB (Registration No. 7273).
보리호위축병 저항성 내도복 다수성 쌀보리 ‘호강’
Development of Naked Barley (Hordeum vulgare L.) Cultivar ‘Hogang’ with High Yield and Resistance to BaYMV
김양길(Yang-Kil Kim),윤영미(Young-Mi Yoon),이미자(Mi-Ja Lee),김경호(Kyong-Ho Kim),강천식(Chon-Sik Kang),정영근(Young-Keun Cheong),박태일(Tae-il Park),김보경(Bo-Kyeong Kim),오세관(Sea-kwan Oh),박종호(Jong-Ho Park)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.3/ 2019
277-283 (7 pages)
자연과학>생활/식품과학
Abstract
As a result of the efforts to breed a high yield naked barley cultivar with disease and stress tolerance in response to climate change and proper double cropping of barley and rice in a paddy field. A new naked barley cultivar named ‘Hogang’ was developed from the cross between ‘Suyoung’ and ‘Geukjosuk 55’ at the National Institute of Crop Science, RDA, Korea, in 2016. ‘Hogang’ is a naked barley cultivar used for powdering and mixing with rice. It has good cooking quality, high whiteness, water absorption rate, and expansion rate. Among other quality characteristics, β-glucan content (5.5%) was higher than that of ‘Saessalbori’ cultivar, while the amylose content (21.7%) was lower than that of ‘Saessalbori’. ‘Hogang’ has a short culm length of 69 cm and it is resistant to BaYMV as well as lodging-resistant. As in ‘Saessalbori’, the maturity date of ‘Hogang’ is May 26th. It has large seed size and grain weight of 34.6 g per 1,000 grains. The yield potential of ‘Hogang’ was 4.56 MT/ha, which was 7% higher than that of ‘Saessalbori’. ‘Hogang’ is expected to spread in BaYMV-prone areas since it is a stable and resistant cultivar. (Registration No. 7375)
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