내도복 단교잡 사료용 옥수수 신품종 ‘청다옥’
A New Single Cross Maize Hybrid for Silage and Grain, ‘Cheongdaok’ with Lodging Tolerance
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Cheongdaok, a new single maize (Zea mays L.) variety, was developed by the maize breeding team at the NationalInstitute of Crop Science (NICS), RDA in 2010. This high-yielding hybrid was produced by crossing two inbred lines, KS159and KS155. KS159 is the seed parent and KS155 is the pollen parent of Cheongdaok. It is a yellow dent maize hybrid. Afterthe preliminary yield trial and advanced yield trial of Cheongdaok in Suwon for two years, the regional yield trial wassubsequently carried out for evaluation of its growth characteristics and yield at four different locations from 2008 to 2010. Thesilking date of Cheongdaok is one day earlier than that of the check hybrid, Kwangpyeongok. Compared to Kwangpyeongok,the Cheongdaok show short in plant height and low in ear height ratio. It has resistance to lodging. The stay-green degree andthe ear ratio of Cheongdaok are similar to Kwangpyeongok. It has moderate resistance to southern leaf blight (Bipolaris maydis)and strong resistance to northern leaf blight (Exserohilum turcicum). It has moderate resistance to black streaked dwarf virus(BSDV), ear lot, and corn borer. The dry matter yield 20.24 ton/ha and the total digestible nutrient (TDN) yield (13.80 ton/ha)of Cheongdaok were similar to Kwangpyeongok. The grain yield (8.51 ton/ha) of Cheongdaok was higher than that of Jangdaok. The seed production of Cheongdaok was well processed due to a good synchronization of flowering period during crossingbetween the seed parent KS159 and the pollen parent KS155, and the F1 seed yield was 1.8 ton/ha in Yeongwol.
Abstract
Cheongdaok, a new single maize (Zea mays L.) variety, was developed by the maize breeding team at the NationalInstitute of Crop Science (NICS), RDA in 2010. This high-yielding hybrid was produced by crossing two inbred lines, KS159and KS155. KS159 is the seed parent and KS155 is the pollen parent of Cheongdaok. It is a yellow dent maize hybrid. Afterthe preliminary yield trial and advanced yield trial of Cheongdaok in Suwon for two years, the regional yield trial wassubsequently carried out for evaluation of its growth characteristics and yield at four different locations from 2008 to 2010. Thesilking date of Cheongdaok is one day earlier than that of the check hybrid, Kwangpyeongok. Compared to Kwangpyeongok,the Cheongdaok show short in plant height and low in ear height ratio. It has resistance to lodging. The stay-green degree andthe ear ratio of Cheongdaok are similar to Kwangpyeongok. It has moderate resistance to southern leaf blight (Bipolaris maydis)and strong resistance to northern leaf blight (Exserohilum turcicum). It has moderate resistance to black streaked dwarf virus(BSDV), ear lot, and corn borer. The dry matter yield 20.24 ton/ha and the total digestible nutrient (TDN) yield (13.80 ton/ha)of Cheongdaok were similar to Kwangpyeongok. The grain yield (8.51 ton/ha) of Cheongdaok was higher than that of Jangdaok. The seed production of Cheongdaok was well processed due to a good synchronization of flowering period during crossingbetween the seed parent KS159 and the pollen parent KS155, and the F1 seed yield was 1.8 ton/ha in Yeongwol.
참고문헌 (11)
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