Genetic Analysis and Quantitative Trait Locus Mapping of Major Feeding Traits in Soybean
To develop new soybean varieties with high feed value,Yuexia 106 and Aishengnidou,along with their F2 population,were used as the mapping population.A total of 660 SSR markers,cover-ing the entire soybean genome,were employed to map quantitative trait locus(QTLs)for eight key feeding traits of soybean,such as plant height,biological yield,acid detergent lignin(ADL),relative feeding value(RFV),and so on.The results showed that significant phenotypic correlations(P＜0.05)were observed among biological yield,branch number on the main stem,number of nodes per main stem,plant height,neutral detergent fiber(NDF),acid detergent fiber(ADF),ADL,and RFV.A total of 18 QTLs were detected across six linkage groups(A1,B2,C1,C2,J,and L).These included 2 QTLs for plant height,1 for nodes per main stem,3 for branch number on the main stem,2 for biological yield,3 for NDF con-tent,1 for ADF content,3 for lignin content,and 3 for RFV.The phenotypic variance explained by indi-vidual QTL ranged from 2.11%to 59.77%,with qADF-l,qADL-a1,qADL-c2,qBY-j,qNBMS-l,qNDF-j,and qNNMS-l having phenotypic contributions greater than 15%.
Whole-plant soybeanQTLBiological yieldRelative feed value
NETL
NSTL
万方数据
