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.

• 고종민(농촌진흥청 국립식량과학원,) | Jong Min Ko (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 백인열(농촌진흥청 국립식량과학원,) | In Youl Baek (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 한원영(농촌진흥청 국립식량과학원,) | Won Young Han (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 이영훈(농촌진흥청 국립식량과학원,) | Yeong Hoon Lee (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 이병원(농촌진흥청 국립식량과학원,) | Byoung Won Lee (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 강범규(농촌진흥청 국립식량과학원,) | Beom Kyu Kang (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea) Corresponding author
• 김현태(농촌진흥청 국립식량과학원,) | Hyun Tae Kim (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 문중경(농촌진흥청 국립식량과학원,) | Jung Kyung Moon (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 하태정(농촌진흥청 국립식량과학원,) | Tae Joung Ha (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 신상욱(농촌진흥청 국립식량과학원,) | Sang Ouk Shin (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 오기원(농촌진흥청 국립식량과학원,) | Ki Won Oh (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 이석기(농촌진흥청 국립식량과학원,) | Seuk Ki Lee (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 서민정(농촌진흥청 국립식량과학원,) | Min Jung Seo (National Institute of Crop Science (NICS), RDA, Jeonju 55365, Korea)
• 강달순(경상남도농업기술원,) | Dal Soon Kang (Gyeongsangnam-do Agricultural Research & Extension Service, Jinju 52733, Korea)
• 최규환(전라북도농업기술원,) | Kyu Hwan Choi (Jeollabuk-do Agricultural Research & Extension Service, Iksan 54591, Korea)
• 김용덕(제주도농업기술원) | Yong Duk Kim (Jeju Agricultural Research & Extension Service, Jeju 63556, Korea)