Identification of QTLs Associated with Total Soyasaponin Content in Soybean （ Glycine max （L.） Merr.）

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） as...

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Bibliographic Details
Published in农业科学学报：英文版 Vol. 11; no. 12; pp. 1976 - 1984
Main Author HUANG Shan-shan HAN Ying-peng LI Chang-suo TIAN Jun LlWen-bin WANG Ji-an
Format Journal Article
LanguageEnglish
Published 2012
Subjects
QTL
分子标记辅助选择
大豆皂甙
定相
数量性状基因座
皂甙含量
结构
鉴定
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Summary: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 gl） and N98-9445A （lower soyasaponin content, only 5.7 mg g-l）. 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, qSAP1 （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 sat413 of LG Dla, 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.
Bibliography:10-1039/S
quantitative trait loci （QTL）, simple sequence repeats （SSR）, marker-assisted selection （MAS）, soybean,soyasaponin
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 gl） and N98-9445A （lower soyasaponin content, only 5.7 mg g-l）. 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, qSAP1 （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 sat413 of LG Dla, 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.
ISSN:2095-3119
2352-3425