Study on Marker-assisted Breeding of Soybean Vitamin E

Hefeng 25 variety with low vitamin E content in Heilongjiang Province and Bayfield variety with high vitamin E content in Canada were crossed.A total of 144 F_2:7 recombinant inbred lines （RILs） were used as materials.The genetic linkage mapping of soybean vitamin E was constructed.Soybean varieties were marker-assisted selected in the interval of refined quantitative trait locus （QTLs）.QTLs were identified in α-,γ-,δ-and the total tocopherol contents of soybean seeds.Fine QTLs of soybean vitamin E content were identified in the interval between Sat₂39 and Satt022 on N linkage group.It was valuable to narrow the interval by marker-assisted selection （MAS）.There were seven major QTLs of vitamin E content in soybean.MAS related to vitamin E content in soybean was carried out in the intervals between Sat₂39 and Satt022.Considering all the kinds of agronomic traits,six strains with high yield and good quality of vitamin E were chosen,numbered 4,54,104,114,122 and 135.