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KMID : 0613820060160060949
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Journal of Life Science
2006 Volume.16 No. 6 p.949 ~ p.954
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Simple Sequence Repeat Markers Linked to Quantitative Trait Loci Controlling Seed Weight, Protein and Oil Contents in Soybean
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Kim Hyeun-Kyeung
Kang Sung-Taeg
Choung Myoung-Gun
Baek In-Youl
Jung Chang-Sik
Oh Ki-Won
Son Beung-Gu
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Abstract
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Soybean [Glycine max (L.) Merr.] is an important crop, accounting for 48% of the world market in oil crops. Improvement of the quality and quantity of soybean seed constituents is one of the most important objectives in soybean breeding. Protein content and seed size are important properties to determine the quality of tofu and soy sprouts respectively. The objective of this study was to identify quantitative trait loci (QTLs) that control seed weight, protein and oil content in soybean. The 117 F2:10 recombinant inbred lines (RIL) developed from a cross of ’Keunolkong’ and ’Shinpaldalkong’ were used. Narrow-sense heritability estimates based on a plot mean on seed weight, protein and oil content were 0.8, 0.78 and 0.71, respectively. Four independent QTLs for seed weight were identified from linkage group (LG) F, I and K. Five QTL for protein content were located on LG D1b, E, H, I and L. Oil content was related with six QTLs located on LG D1b, E, G, I, J and N. Protein and oil content have three common QTLs on LG D1b, E and I. Thus, we identified major loci improving soybean seed quality.
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KEYWORD
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Soybean, seed weight, protein, oil, QTL, SSR marker
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