Archiving

  • Search search

KOREAN JOURNAL OF BREEDING SCIENCE

result :
14
All Endnote Refworks
밀의 개화시기 유전자와 개화시기 경로
Flowering-time Genes and Flowering-time Pathways in Wheat (Triticum aestivum L.)
이정환(Jeong Hwan Lee)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
65-72 (8 pages)
자연과학>생활/식품과학
Abstract
One of the most important events in the regulation of plant development is the transition from the vegetative to the reproductive phase. The precise control of this transition, which has a profound effect on grain production in annual temperate cereals such as wheat and barley, is determined mainly by seasonal changes in day length (photoperiod) and by winter-like temperatures (vernalization). Recent molecular and genetic analyses in wheat have revealed the molecular mechanisms underlying flowering responses of wheat to changes in photoperiod and cold temperature. Here, we describe genes related to vernalization, photoperiod, and earliness per se (eps), and the molecular mechanism regulating flowering time through vernalization and photoperiod genes in wheat.
국내 보리 품종의 전분 관련 특성 평가
Evaluation of Starch Properties of Korean Barley (Hordeum vulgare L.) Cultivars
윤영미(Young-Mi Yoon):김경훈(Kyung-Hoon Kim):강택규(Taek-Gyu Kang):강성욱(Seong-Wook Kang):강혜정(Hye-Jung Kang):강천식(Chon-Sik Kang):김양길(Yang-Kil Kim),박철수(Chul Soo Park),조성우(Seong-Woo Cho)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
73-85 (13 pages)
자연과학>생활/식품과학
Abstract
Starch properties of 32 Korean barley cultivars (Hordeum vulgare L.) were evaluated to improve the Korean barley breeding program. The average amylose content of non-waxy barley cultivars was approximately 3.5 times higher than that of waxy barley cultivars. Furthermore, non-waxy barley cultivars showed lower damaged starch content, water retention capacity, swelling volume, swelling power, and peak viscosity than waxy barley cultivars, while they showed bigger average starch granule size and higher final viscosity. Among Korean barley cultivars, the amylose content showed a positive correlation with damaged starch content, water retention capacity, swelling volume and power, and peak viscosity, while showing a negative correlation with pasting temperature and final viscosity. Among non-waxy barley cultivars, the amylose content showed a positive correlation with damaged starch content, but correlation with swelling power, peak viscosity, pasting temperature, and final viscosity was negative. Among waxy barley cultivars, the amylose content showed negative correlation with peak viscosity. There were positive correlations between swelling volume and peak viscosity among Korean barley and waxy barley cultivars. Also, there were positive correlations between swelling power and peak viscosity among Korean barley and non-waxy barley cultivars. Principal Components Analysis revealed that amylose content and peak viscosity are the main factors affecting starch properties of Korean non-waxy barley cultivars, and Korean non-waxy barley cultivars can be classified into two groups with these two factors. Water retention capacity and peak viscosity are the main factors affecting starch properties of waxy barley cultivars and classify them into two groups. The starch properties of Korean barley cultivars demonstrated in this study are useful to improve end-use quality for processed foods using barley. In addition, the continuous qualitative evaluation of barley is very important for the Korean barley breeding program.
한국 자포니카 품종에서 벼퉁그로 바이러스병 저항성 탐색
Identification of Resistance to Rice Tungro Virus Disease in Korean Japonica Rice Cultivars
이종희(Jong Hee Lee):조준현(Jun-Hyeon Cho):이지윤(Ji-Yoon Lee):강주원(Ju-Won Kang):신동진(Dongjin Shin):조수민(Sumin Jo):최일룡(Il-Ryong Choi):송유천(You-Chun Song):박동수(Dong-Soo Park),고종민(Jong-Min Ko)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
86-90 (5 pages)
자연과학>생활/식품과학
Abstract
Rice tungro disease is a serious threat to rice production in South and Southeast Asian countries. Rice production in these countries has been intensified, often through continuous cultivation of rice. We conducted a screen of the resistance to tungro virus disease in Korean japonica rice. Dongjin, Hwaseong, and Sangju were varieties resistant to Rice tungro spherical virus (RTSV) but susceptible to Rice tungro bacilliform virus (RTBV). RTSV-resistant variety Sangju was crossed with RTSV-susceptible variety Unkwang to conduct a genetic analysis for RTSV resistance originating from Sangju. Evaluation of 201 F2 plants from the cross between Unkwang and Sangju showed that there were 85 plants showing resistance, and that 116 plants were susceptible, indicating a ratio fitting a 7:9 ratio ratio (χ2 = 0.54; p = 0.46). Thus, the resistance to RTSV in Sangju might be controlled by two recessive genes. This result indicates that Sangju might serve as a useful genetic source for diversification of RTSV resistance and stabilization of resistance through gene pyramiding.
탁시폴린 고함유 적갈색미 신품종 ‘슈퍼홍미
Reddish Brown Rice Variety ‘Superhongmi’ with High Taxifolin Content
함태호(Tae-Ho Ham),임다은(Da-Eun, Im),권순욱(Soon-Wook Kwon),류수노(Su-Noh Ryu)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
91-98 (8 pages)
자연과학>생활/식품과학
Abstract
‘Superhongmi’, a reddish brown rice cultivar, was derived from a cross between CG2-3-5-1-6-1 (Heugjinju/Suwon 425) producing blackish purple rice and ‘Daeribbyeo 1’ producing large white grains. A promising line, SR28721-7-5-2-1-2-1, was obtained using the pedigree breeding method from 2003 to 2015 and designated as ‘KNOU6R’. This variety headed on September 5, and its culm length is 94.7 cm. The panicle length of ‘Superhongmi’ is 19.8 cm. The number of panicles per hill and grain per panicle is 5.4 ea and 154.9 ea, respectively. The fertility ratio of ‘Superhongmi’ is approximately 91.0% and 1000-grain weight (TGW) is approximately 26.8 g, which is similar to that of ‘Superjami’; however, the number of panicles per hill is half of that of ‘Superjami’. The content of taxifolin and total polyphenol extracted from whole grains of ‘Superhongmi’ is 67.7 and 248 mg/100g seed weight, respectively (Registration No. 7365).
열대성 조숙 내도복 다수성 단교잡종 옥수수 ‘케이엠1
Tropical Single Cross Corn Hybrid ‘KM1’ with Early Maturity, Lodging Tolerance, and High Yield
백성범(Seong-Bum Baek),손범영(Beom-Young Son),김정태(Jung-Tae Kim),이진석(Jin-Seok Lee),배환희(Hwan-Hee Bae),신성휴(Seong-Hyu Shin),송형석(Hyung-Seok Song),김상곤(Sang-Gon Kim),김병주(Byung-Joo Kim),이상규(Sang-Kyu Lee),고영삼(Young-Sam Go),김선림(Sun-Lim Kim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
99-104 (6 pages)
자연과학>생활/식품과학
Abstract
‘KM1’, a corn hybrid was developed for seed export to Southeast Asia by the maize breeding team of the National Institute of Crop Science (NICS), RDA in 2016. The hybrid ‘KM1’ was obtained by crossing two inbred lines, ‘KS155’ and ‘15VL060’. After yield trials at Dong Trieu, Vietnam for one year, country adaptability trials were subsequently carried out in three countries (Vietnam, Cambodia, and Indonesia) in 2016. ‘KM1’ is a white-yellow and dent-like corn, and the plant adapts to the northern part of Vietnam and northwestern part of Cambodia; and the corn can be used as food and feed. The plant is fast flowering and has strong lodging tolerance and resistance to southern leaf blight and downy mildew. Silking date of ‘KM1’ is 5 days earlier than that of Vietnam s leading cultivar ‘LVN10’. The grain yield of ‘KM1’ is 879 kg/10a in Vietnam, which is 22% higher than that of LVN10, and 914 kg/10a in Cambodia, which is 5% higher than that of Cambodia’s leading cultivar ‘CP888’. This hybrid requires the implementation of disease control measures because it is susceptible to corn rust. (Registration No. 7507).
다수성 종실용 옥수수 단교잡 신품종 ‘황다옥’
Single Cross Maize Hybrid ‘Hwangdaok’ for High Grain Yield
손범영(Beom-Young Son),백성범(Seong-Bum Baek):김정태(Jung-Tae Kim):이진석(Jin-Seok Lee):배환희(Hwan-Hee Bae):고영삼(Young-Sam Go):김선림(Sun-Lim Kim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
105-109 (5 pages)
자연과학>생활/식품과학
Abstract
‘Hwangdaok’, a new maize F1 hybrid (Zea mays L.), was developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2016. The high-yielding yellow dent hybrid named ‘Hwangdaok’ was obtained by crossing between two inbred lines, ‘KS203’ and ‘KS190’. After advanced yield trial in Suwon in 2012, regional yield trial was subsequently carried out to evaluate the growth and yield of ‘Hwangdaok’ at three different locations from 2014 to 2016. The number of days to silking of ‘Hwangdaok’ is 76. The plant height is 262 cm and ear height ratio is 51%, which are similar to those of ‘Jangdaok’. It has resistance to lodging. The number of ears per 100 plants is 95. The ear length is 21.3 cm and weight of 100 seeds is 34.7 g, similar to those of ‘Jangdaok’. It has moderate resistance to southern leaf blight (Bipolaris maydis) and European corn borer (Ostrinia nubilalis). The grain yield (10 ton/ha) of ‘Hwangdaok’ is 6% higher than that of ‘Jangdaok’. The seed production rate of ‘Hwangdaok’ is acceptable due to good synchronization of flowering period during crossing between the seed parent, KS203, and the pollen parent, KS190, in Yeongwol. F1 seed yield was 1.68 ton/ha. ‘Hwangdaok’ can be a suitable cultivar to plain areas in Korea. (Variety registration No. 7502).
결각엽 단경 녹두 품종 ‘아름’
Mungbean Cultivar ‘Areum’ with a Lobed Leaflet and Short Stem
김동관(Dong-Kwan Kim),최진경(Jin-Gyung Choi):김선곤(Seon-Gon Kim):이경동(Kyung-Dong Lee):서민정(Min-Jung Seo),강범규(Beom-Kyu Kang)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
110-115 (6 pages)
자연과학>생활/식품과학
Abstract
A mungbean cultivar ‘Areum’ (Vigna radiata (L.) Wilczek) was derived from a cross between ‘Samgang’ and ‘KM9901-3B-15-2-4’ at the Jeollanamdo Agricultural Research and Extension Services (JARES) in 2013. ‘Areum’ has an erect growth habit, lobed leaflet, green hypocotyls, light yellow corolla, and a dull green seed surface. Its stem length is 61 cm, which is 5 cm shorter than that of the control cultivar ‘Owool’. The 1000-seed weight is 51 g, which is 2 g heavier than that of ‘Owool’. Its field resistance to mungbean mottle virus, cercospora leaf spot, and powdery mildew is similar to that of the control cultivar, whereas its field resistance to lodging is marginally weaker. The hard seed rate of ‘Areum’ is 6.81%, which is 2.49% higher than that of ‘Owool’. The sprout yield ratio is 7.09, which is similar to that of the control cultivar. The average yield of ‘Areum’ is 1.79 ton/ha, which is 12% more than that of ‘Owool’. (Cultivar registration number: 5876).
단경 다분지 대립 다수성 땅콩 신품종 ‘탐실’
Virginia-Typed Short Stem and Large Grain Peanut Variety ‘Tamsil’
배석복(Suk-Bok Pae):이명희(Myoung-Hee Lee):김성업(Sung-Up Kim),오은영(Eun-Young Oh),김정인(Jung-In Kim),여운상(Un-Sang Yeo):오기원(Ki-Won Oh),곽도연(Do-Yeon Kwank)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
116-121 (6 pages)
자연과학>생활/식품과학
Abstract
A peanut variety ‘Tamsil’ (Arachis hypogaea ssp. hypogaea L.) was developed at the Department of Southern Area Crop Science, National Institute of Crop Science (NICS), Milyang in 2016. This was developed by crossing ‘Milyang26’ with Virginia-typed short stem and ‘Milyang20’ with Virginia-typed large grain. ‘Tamsil’, which is a Virginia plant type, has 22 branches per plant, and its main stem length is 31 cm. Each pod has two grains with brown testa and long ellipse-shaped large kernel. Its yield characteristics were as follows: pods per plant, 44; 100-seed weight, 111 g; and pod shelling ratio in the regional yield trials, 78%. The seed has 48.5% crude oil and 28.8% protein content. This variety showed resistance to early leaf spot, and it is more resistant to web blotch, stem rot, and lodging than the reference variety. In the regional yield trials for 3 years, ‘Tamsil’ was more productive than the reference variety by 19% with 4.97 MT/ha grain production.
생리장해에 강하며 건물 함량이 높고 맛이 좋은 감자 ‘다미’
‘Dami’, A Potato Cultivar with Few Tuber Physical Defects, High Dry Matter Content, and Good Taste
박영은(Young-Eun Park),조지홍(Ji-Hong Cho),임주성(Ju-Sung Im),조광수(Kwang-Soo Cho),김점순(Jeom-Soon Kim),이영규(Young-Gyu Lee),장동칠(Dong-Chil Chang),진용익(Yong-Ik Jin),천충기(Chung-Ki Cheon),정진철(Jin-Chul Jung)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
122-127 (6 pages)
자연과학>생활/식품과학
Abstract
‘Dami’ was released by the potato breeding program at the National Institute of Highland Agriculture (NIHA), National Institute of Crop Science, Rural Development Administration. To develop a potato cultivar suitable for spring and summer cropping with good taste, a cross of ‘Daegwan 1-97’ × ‘Daegwan 1-98’ was made in 2005. One of the progenies selected, clone number P05855-18, was validated for key agronomic characteristics required for spring cultivation in Gangneung and summer cultivation in Pyeongchang from 2009 to 2011. Subsequently, P05855-18 was advanced to nationwide field trials and renamed as ‘Daegwan 1-121’. Regional adaptations of ‘Daegwan 1-121’ were tested in Cheongju, Najoo, Gangneung, and Pyeongchang between 2012 and 2014, and finally registered as a potato cultivar, ‘Dami’, based on key agronomic characteristics, including mid-maturity, semi-erect growth habit, and consumer traits including round tuber and very shallow eye-depth. ‘Dami’ has yellow skin and white flesh. The leaves are green, and white flowers bloom abundantly. Physiological tuber disorders, such as malformation, cracks, and internal defects, were less frequently observed than those in ‘Superior’. ‘Dami’ was moderately resistant to potato late blight and viruses. The average tuber yield was approximately 5% higher than that of ‘Sumi’ and the dry matter content was approximately 20.5%. The taste of the boiled whole potato was considered excellent, owing to floury characteristics, and the potato was suitable for table usage (Grant No. 6926).
토코페롤 함량이 높은 적갈색 벼 ‘토코미1호’
A Rice Variety ‘Tocomi-1’ with High Tocopherol Content and Reddish Brown Pericarp
황정은(Jung Eun Hwang),김동섭(Dong Sub Kim),최홍일(Hong Il Choi),김진백(Jin Baek Kim),강시용(Si-Yong Kang)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
128-133 (6 pages)
자연과학>생활/식품과학
Abstract
‘Tocomi-1’, a rice variety with high tocopherol content and a reddish brown color was developed from ‘Dongan’ by a mutation breeding technique using a 120 Gy gamma ray source at the Korea Atomic Energy Research Institute (KAERI). The heading date of this variety was August 12, which was 2 days later than the original variety ‘Dongan’. The culm and panicle lengths of ‘Tocomi-1’ were 80 cm and 20.3 cm, respectively. The number of tillers per hill was 19.1 and the number of spikelets per panicle was 106.3. The ratio of ripened grain was approximately 87.0% and the weight of 1000 grains was 25.4 g. The pericarp of brown rice was reddish brown in color. The total tocopherol content was 1.65 mg/100g, which was higher than that of the original variety (1.09 mg/100g). In addition, the brown rice of ‘Tocomi-1’ contained 8% more total amino acids. The average yield potential of ‘Tocomi-1’ in grain and brown rice was approximately 6.18 kg/10a and 5.15 kg/10a for 3 years, respectively (Registration No. of Plant Protection Wright : 6813).
건식 쌀가루 전용 뽀얀메 ‘한가루’
An Opaque Endosperm Rice Cultivar, ‘Hangaru’, Suitable for Exclusive Dry-Milling Rice Flour Production
원용재(Yong-Jae Won),안억근(Eok-Keun Ahn):정응기(Eung-Gi Jeong):장재기(Jae-Ki Chang):이정희(Jeong-Heui Lee),정국현(Kuk-Hyun Jung):현웅조(Ung-Jo Hyun):조영찬(Young-Chan Cho),오세관(Sea-Kwan Oh),윤미라(Mi-Ra Yoon):김보경(Bo-Kyeong Kim):김병주(Byeong-Ju Kim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
134-139 (6 pages)
자연과학>생활/식품과학
Abstract
The ‘Hangaru’ is a rice variety derived from a cross between ‘Seolgaeng’, which is suitable for making rice wine, and ‘Daeripbyeo1’, which has a heavy grain weight (34.8g) and is suitable for deep fried rice, by the rice breeding team at the National Institute of Crop Science, Rural Development Administration, in 2017. The heading date of ‘Hangaru’ was August 18 and was 10 days later than check variety, ‘Hwaseong’, in Suwon. It had a culm length of 79 cm and 102 spikelets per panicle, and showed similar tolerance to ‘Hwaseong’ when exposed to cold stress. ‘Hangaru’ showed medium resistance to blast disease, but susceptibility to bacterial blight, viruses and brown planthoppers. The milled rice of this variety exhibited an opaque and non-glutinous endosperm. The 1,000 grain weight of brown rice was 32.9 g, which was 10.8 g heavier than that of ‘Hwaseong’; the protein content was 7.0% and the amylose content (19.2%) was similar to that of ‘Hwaseong’. The milled rice recovery rate was lower than that of ‘Hwaseong’. However, opaque grain percentage of milled rice was 88.1%. The hardness of the rice grain was soft and the starch granule shape in the endosperm was round, similar to wheat. The average size of rice flour was 71.0 µm and the damaged starch rate was 6.4%. These results showed that this variety could be suitable for dry milling rice flour production. ‘Hangaru’ had a yield of 5.42 MT/ha of milled rice productivity in ordinary cultivation, which was 99% of that of ‘Hwaseong’. ‘Hangaru’ was adaptable to the middle plain area and Mid-west coast of Korea (Registration No. 7270).
열대아시아 적응 다수성 자포니카 벼 ‘아세미1호’
A High-Yielding Japonica Rice ‘Asemi1’ Adaptable to Tropical Asia
원용재(Yong-Jae Won),정응기(Eung-Gi Jeong),강경호(Kyeong-Ho kang),홍하철(Ha-Cheol Hon):조영찬(Young-Chan Cho),정오영(O-Young Jung),장재기(Jae-Ki Chang),양운호(Un-Ho Yang):정국현(Kuk-Hyun Jung),여운상(Un-Sang Yeo),서대하(Dae-Ha Seo):성낙식(Nak-Sig Sung),이점호(Jeom-Ho Lee),김보경(Bo-Kyeong Kim)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
140-145 (6 pages)
자연과학>생활/식품과학
Abstract
Asemi1 is a rice variety derived from a cross between ‘IR71667’, which has a Jinmibyeo background with a long basic vegetative phase, and ‘IR77863’, which has a Shinunbongbyeo background with a high yield and early maturity, by the rice breeding team at NICS, RDA, in 2014. The heading date of ‘Asemi1’ is July 29, 14 days earlier than that of the check variety ‘Hwaseong’. It has a culm length of 84 cm and 110 spikelets per panicle. ‘Asemi1’ is resistant to blast disease, but susceptible to other viruses and planthoppers. The milled rice of this variety exhibits translucent, clear non-glutinous endosperm and a short grain shape. The protein content (7.3%) was higher than that of ‘Hwaseong’, and the amylose content (19.6%) was similar to that of ‘Hwaseong’. The milled rice recovery rate of ‘Asemi1’ was similar to that of ‘Hwaseong’. However, the head rice rate of ‘Asemi1’ was lower than that of ‘Hwaseong’. The milled rice yield of ‘Asemi1’ was 5.92 MT/ha, which was higher than that of ‘Hwaseong’ in ordinary cultivation. ‘Asemi1’ was suitable for adaptation to a wide region of tropical Asia (Registration No. 6809).
만추대 다수성 잎상추 ‘자혹맛치마’ 육성
Breeding of Late Bolting and High Yield Lettuce ‘Jahokmaschima’
장석우(Suk-Woo Jang):곽정호(Jung-Ho Kwak):최승국(Seung-Kook Choi),박수형(Suhyoung Park):이종남(Jong-Nam Lee):조창휘(Chang-Hui Cho):김대균(Dae-Gyun Kim):송명규(Myung-Kyu Song),정택구(Taek-Gu Jeong),김은지(Eun-Ji Kim):범혜랑(Hye-Rang Beom):김희대(Hee-Dae Kim):박보경(Bo-Gyung Park):고순보(Sun-Bo Ko)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
146-150 (5 pages)
자연과학>생활/식품과학
Abstract
A cultivar of lettuce (Lactuca sativa L.) with sharply large oval and purple leaf, ‘Jahokmaschima’, which has late bolting and a high yield, was developed from a cross between ‘Bulkkoch’ (dark red leaf color and early bolting) and ‘Cheongpung’ (high yield). The cross and selection for advanced lines was conducted by the pedigree method between 2005 and 2011. The advanced lines were evaluated for yield and adaptability at six locations in Korea (Gangwon-do, Gyeonggi-do, Chungcheongbuk-do, Jeollabuk-do, Gyeongnam-do, and Jeju-do) for 3 years until 2014. The ‘Jahokmaschima’ lettuce has a gray seed color, and the leaf type of the matured stage is a large oval leaf, leaf no. 67 per plant, and late bolting. In particular, the ‘Jahokmaschima’ has good resistant to tip burn in the growth period. The anthocyanin and vitamin C content of ‘Jahokmaschima’ were lower than those of ‘Tomallin’, at 4.05 mg/100g and 27.7 mg/100g, respectively. The BSL (bitter sesquiterpene lactones; latucin, 8-deoxylactucin, and lactucopicrin) content of ‘Jahokmaschima’ was lower than that of ‘Tomallin’, at 2.120 µg/g DW. Compared with ‘Tomallin’, the marketable yield of ‘Jahokmaschima’ was 1% higher (at 374 g per plant) and particularly improved late in bolting in high temperature cultivation in the field. The shelf-life of ‘Jahokmaschima’ was similar to ‘Tomallin’ at 4ºC. Furthermore, it tasted better, and was crispier and sweeter than ‘Tomallin’. Thus, we recommend that the new cultivar ‘Jahokmaschima’ is suitable for cultivation in spring and fall.
쌀 외관이 양호하고 도열병에 강한 극조생 벼 ‘백일미’
‘Baegilmi’, an Extremely Early Maturing Blast Resistant Rice with Good Grain Appearance
모영준(Youngjun Mo),정종민(Jong-Min Jeong)김우재(Woo-Jae Kim),김보경(Bo-Kyeong Kim),정지웅(Ji-Ung Jeung)
KOREAN JOURNAL OF BREEDING SCIENCE Vol.51 NO.2/ 2019
151-159 (9 pages)
자연과학>생활/식품과학
Abstract
‘Baegilmi’ is an extremely early maturing rice variety that can be harvested within 100 days after transplanting, and also exhibits strong blast resistance and good grain appearance. From a mutant population of ‘Koshihikari’ treated with ethyl methanesulfonate, a promising line, ‘Suweon 559’, was selected through pedigree breeding and yield trials, and subsequently registered as ‘Baegilmi’. According to the 3-year (2012–2014) regional adaptability tests, the average heading date of Baegilmi in ordinary planting was July 14 th , which was 23 and 9 days earlier than that of the check varieties ‘Hwaseong’ and ‘Odae’, respectively. The milled rice yield of ‘Baegilmi’ was 4.53 MT/ha in ordinary planting (83% and 98% of ‘Hwaseong’ and ‘Odae’, respectively). ‘Baegilmi’ had a culm length of 75 cm (10 cm shorter than ‘Hwaseong’), a panicle length of 21 cm (similar to ‘Hwaseong’), and 12 panicles per plant (two fewer than ‘Hwaseong’). The brown rice of ‘Baegilmi’ was slightly more slender than ‘Hwaseong’, with a 1,000 grain weight of 20.6 g and length/width ratio of 1.92. The milled rice of ‘Baegilmi’ was translucent, with a protein content of 8.4% (1.7% higher than ‘Hwaseong’) and an amylose content of 18.6% (similar to ‘Hwaseong’). ‘Baegilmi’ exhibited strong blast resistance, but was susceptible to bacterial blight, viral diseases, and insect pests. The release of ‘Baegilmi’ is expected to provide a useful early-maturing rice variety that can be used in diverse cropping systems in paddy fields (Registration No. 6805).
1