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Single Cross Maize Hybrid for Grain, ‘Sinhwangok’
종실용 옥수수 단교잡 신품종 ‘신황옥’
Korean J. Breed. Sci. 2017;49(2):109-112
Published online June 1, 2017
© 2017 Korean Society of Breeding Science.

Beom-Young Son*, Seong-Bum Baek, Jung-Tae Kim, Jin-Seok Lee, Hwan-Hee Bae, Chang-Hwan Park, Min-Jung Seo, and Jeom-Ho Lee
손범영*, 백성범, 김정태, 이진석, 배환희, 박장환, 서민정, 이점호

National Institute of Crop Science, RDA, Suwon 16429, Korea
국립식량과학원
Abstract
‘Sinhwangok’, a new maize F1 hybrid (Zea mays L.), is developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2015. The high-yielding hybrid, named ‘Sinhwangok’ was bred by crossing between two inbred lines, ‘KS178’ and ‘KS145’. It is a yellow dent maize hybrid. After advanced yield trial of ‘Sinhwangok’ in Suwon for two years, regional yield trial was subsequently carried out for evaluation of its growth and yield at three different locations from 2012 to 2015. The days to silking of ‘Sinhwangok’ are 74. The plant height of ‘Sinhwangok’ is 241cm, similar to ‘Jangdaok’, and its ear height ratio is 51%, similar with that of ‘Jangdaok’. It has resistance to lodging. The number of ear per 100 plants is 96. The ear length of ‘Sinhwangok’ is 17cm, shorter than that of ‘Jangdaok’. The weight of 100 seeds of ‘Sinhwangok’ is 34.1g, similar to that of ‘Jangdaok’. It has moderate resistance to southern leaf blight (Bipolaris maydis). It has moderate resistance to European Corn Borer (Ostrinia nubilalis). The grain yield (8.9 ton/ha) of ‘Sinhwangok’ was 15% higher than that of ‘Jangdaok’. The seed production of ‘Sinhwangok’ was acceptable due to a good synchronization of flowering period during crossing between the seed parent, KS178, and the pollen parent, KS145, in Yeongwol and F1 seed yield was 2.3 ton/ha. ‘Sinhwangok’ would be a suitable cultivar to all plain area in Korea.
Keywords : Maize, Crossing, Grain, Yield, Seed production


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