조숙 양질 다수성 식용 쌀귀리 ‘수양’

‘Suyang’, A New Naked Oat Cultivar with Early-Heading and High-Yielding

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℃ in January.