Wednesday, November 7, 2007
258-13
Identification for Major QTLs for Flowering and Maturity across Environment in Soybeans RIL Population.
Kang Sung-Taeg1, Seo Min-Jung2, Moon Jung-Kyeong2, Lee Young-Ho2, Yun Hong-Tae2, Kim Si-Ju2, Choi Byoung-Roul3, and Kim Hyeun-Kyeung4. (1) Horticulture & Crop Science, Ohio State University - OARDC, 1680 Madison Avenue, 109 Williams Hall, Wooster, OH 44691, (2) National Institute of Crop Science, RDA, Suwon 441-857, South Korea, (3) Gyeonggi Agricultural Research and Extension Service, Hwasung 445-300, South Korea, (4) Busan National Univ. Medical Research Inst., Busan 602-739, South Korea
Flowering and maturity is a quantitatively inherited trait of agronomic importance in soybean. Many of genetic studies have been conducted and identified several gene for these traits. In this experiment, two Soybean RIL population, Keunolkong x Shinpaldalkong(KS) and Keunolkong x Iksan10(KI), showing different flowing and maturity loci, were genotyped with simple sequence repeats (SSRs), and phenotyped across two location and two year. Analysis of QTL for flowering and maturity identified a putative region on LG C2, L, O and B1 across populations and environments. Especially, Sat 010 on LG L, Satt243 on LG O are located near E3 and E2 genes, respectively on KS population. Also Satt460 on C2 was identified near E1 and E7 genes on KI population. This result indicated that different breeding approach depending upon genetic material should be considered to breed variety for wide adaptability. The major QTL identified in this experiment may be used for effective marker assisted selection (MAS).