Jong Min Ko1, In Youl Baek1, Won Young Han1, Yeong Hoon Lee1, Byoung Won Lee1,Beom Kyu Kang1*, Hyun Tae Kim1, Jung Kyung Moon1, Tae Joung Ha1, Sang Ouk Shin1, Ki Won Oh1,Seuk Ki Lee1, Min Jung Seo1, Dal Soon Kang2, Kyu Hwan Choi3, and Yong Duk Kim4
Korean. J. Breed. Sci. ;48(4):492-498. Published online December 31, 2016
Early maturity of soybean (Glycine max (L.) Merr.) is an important character for double cultivating system with winter crops such as onion or garlic in southern area of Korea. Soybean cultivars released in the past, especially ‘Keunolkong’ was widely cultivated but it was weak at abiotic stress and low yield potential because of too short growing period and short stem height. ‘Hanol’, a new early maturing cultivar showing better abiotic stress tolerant and higher yield potential, was developed from the cross between SS91408 and ‘Hwaeomputkong’, and released in 2009. ‘Hanol’ is, compared to ‘Keunolkong’, Hanol’s growing period is five days longer and its height is 5cm higher. In addition, it showed better excess-water tolerant and 26.5g 100-seed weight. At regional adaptation yield trials (RYT) in six regions from 2007 to 2009, ‘Hanol’ showed 2.04 tons of seed per hectare, 14% higher than ‘Keunolkong’ (1.80ton/ha). ‘Hanol’ is promising for double cropping system with higher yield.