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‘Suyang’, A New Naked Oat Cultivar with Early-Heading and High-Yielding
조숙 양질 다수성 식용 쌀귀리 ‘수양’
Korean J. Breed. Sci. 2014;46(3):323-327
Published online September 30, 2014
© 2014 Korean Society of Breeding Science.

Han Ouk-Kyu1, Tae-Il Park2, Hyoung-Ho Park2, Ki-Hun Park2, Young-Jin Oh2, Kee-Jong Kim1, Tae-Hwa Song2, Young-Jik Jang3, Dae-Ho Kim4, Jong-Jin Hwang1, and Young-Up Kwon1
한옥규1* ・박태일2 ・박형호2 ・박기훈2 ・오영진2 ・김기종1 ・송태화2 ・장영직3 ・김대호4 ・황종진1 ・권영업1

1National Institute of Crop Science, Suwon 441-857, Korea2Dept. Rice and Winter Cereal Crop, NICS, RDA, Iksan 570-080, Korea3Chollabuk-do, Agricultural Research and Extension Services, Iksan 570-704, Korea4Gyeongsangnam-do, Agricultural Research and Extension Services, Jinju 660-360, Korea
1국립식량과학원, 2국립식량과학원 벼맥류부, 3전북농업기술원, 4경남농업기술원
A new naked oat (Avena sativa L.) cultivar ‘Suyang’ was developed by National Institute of Crop Science, RDA in 2010. It was derived from the cross between ‘Sikyonggwiri’ and ‘Gwiri23’. Subsequent generations were handled in a bulk method and pedigree selection program, and ‘SO96025-B-303-44-2-4’ was selected for agronomic appearance in 2002. The line showed both high yield and good husking rate of seed in the Yield Trial tested at Suwon in 2003 to 2004, being designated as ‘Gwiri56’. The ‘Gwiri56’ was subsequently evaluated for winter hardiness, earliness, and yield in four locations, Gimje, Iksan, Jeongeup and Jinju from 2005 to 2010 and was released as the name of ‘Suyang’. ‘Suyang’ had 11 days earlier heading date and 6 days earlier maturing time than the check cultivar ‘Seonyang’ in field condition. The ‘Suyang’ had 23.7 cm of spike length, 568 spikes per m2, 73 grains per spike, 29.2 g of 1,000-grain weight, and 646 g of test weight. ‘Suyang’ showed better winter hardiness than that of the check cultivar ‘Seonyang’, and similar seed quality to the check cultivar in respect to crude protein (11.3%) and β-glucan content (4.7%). However, it showed higher husking rate than that of check cultivar. The grain yield of ‘Suyang’ in the regional yield trial for 4 years was averaged 4.35 MT ha-1, which was 29% higher than that of the check cultivar ‘Seonyang’. ‘Suyang’ is recommended for fall sowing cropping only in the south area where daily minimum mean temperatures are averaged higher than -4°C in January.
Keywords : Naked, oat, Early-heading, High-yielding, Suyang

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