Identification of QTLs Associated with Total Soyasaponin Content in Soybean (Glycine max (L.) Merr.) |
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| Institution: | 1. Key Laboratory of Soybean Biology, Ministry of Education/Soybean Research Institute, Northeast Agricultural University, Harbin 150030, P.R. China;2. Plant Protection Institute, Heilongjiang Academy of Land Reclamation Sciences, Harbin 150038, P.R. China |
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| Abstract: | Soyasaponins are valuable compounds in certain drugs, industry, food additives and surfactants. Selecting cultivars with higher-soyasaponin content along with agronomic traits is a main goal for many soybean breeders. The aim of the present study was to identify the quantitative trait loci (QTLs) associated with total soyasaponin content through a F2 population, which was derived from a cross between Ha 91016 (higher soyasaponin content cultivar, 16.8 mg g−1) and N98-9445A (lower soyasaponin content, only 5.7 mg g−1). A genetic linkage map including a total of 162 simple sequence repeat markers was constructed, which covered the total length 2 735.5 cM, and the average distance between markers was 16.96 cM. Two QTLs associated with total soyasaponin content were identified. One, qSAP_1 (located in sat_044-satt102 of linkage group (LG) K), could explain 12.6% of phenotypic variance. The other, qSAP_2, was located between satt368 and sat_413 of LG D1a, which could explain 15.8% of phenotypic variance. It was concluded that the two QTLs would have some potential value for marker-assisted selection for high-soyasaponin content breeding in soybeans. |
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