쌀 외관이 양호하고 도열병에 강한 극조생 벼 ‘백일미’
‘Baegilmi’, an Extremely Early Maturing Blast Resistant Rice with Good Grain Appearance
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‘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 14th, 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).
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 14th, 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).
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