The composition of high molecular weight glutenin subunits( HMW-GS) was analyzed using SDS-PAGE with 70 Longdong dryland winter wheat germplasm resources as experimental materials.The results showed that Longdong dryl...The composition of high molecular weight glutenin subunits( HMW-GS) was analyzed using SDS-PAGE with 70 Longdong dryland winter wheat germplasm resources as experimental materials.The results showed that Longdong dryland winter wheat germplasm resources had N,7 + 8,2 + 12 as the dominant HMW-GS composition( 42.86%),while the dominant HMW-GS composition in the introduced germplasms was N,7 + 9,2 + 12( 36.84%).On the Glu-B1 locus of Longdong dryland germplasms,subunit 7 + 8 had the highest frequency,accounting for 65.71%,and on the Glu-B1 locus of the introduced germplasms,subunit7 + 9 had the highest frequency,accounting for 57.89%.Whether subunit 7 + 8 is related to drought resistance in varieties still needs further study.On Glu-D1 locus,high-quality subunit 5 + 10 appeared in the introduced resources for 5 times,accounting for 13.16% of all the introduced lines,and appeared in Longdong dryland winter wheat germplasm resources for 2 times,only accounting for 2.86% of all the resources,suggesting that Longdong dryland germplasms lack high-quality subunits and need further improvement.展开更多
基金Supported by the Gansu Dryland Winter Wheat Germplasm Innovation and Application Engineering Research Center
文摘The composition of high molecular weight glutenin subunits( HMW-GS) was analyzed using SDS-PAGE with 70 Longdong dryland winter wheat germplasm resources as experimental materials.The results showed that Longdong dryland winter wheat germplasm resources had N,7 + 8,2 + 12 as the dominant HMW-GS composition( 42.86%),while the dominant HMW-GS composition in the introduced germplasms was N,7 + 9,2 + 12( 36.84%).On the Glu-B1 locus of Longdong dryland germplasms,subunit 7 + 8 had the highest frequency,accounting for 65.71%,and on the Glu-B1 locus of the introduced germplasms,subunit7 + 9 had the highest frequency,accounting for 57.89%.Whether subunit 7 + 8 is related to drought resistance in varieties still needs further study.On Glu-D1 locus,high-quality subunit 5 + 10 appeared in the introduced resources for 5 times,accounting for 13.16% of all the introduced lines,and appeared in Longdong dryland winter wheat germplasm resources for 2 times,only accounting for 2.86% of all the resources,suggesting that Longdong dryland germplasms lack high-quality subunits and need further improvement.
