| In order to deeply understand the relationships between HMW glutenin subunits (HMW-GS) composition and quality,we collected 177 wheat varieties（lines） mainly planted in Huanghuai Southern region and detected their HMW-GS subunits composition. Also,these varieties (lines) seeds quality were tested after harvested in Zhengzhou,Henan Province. Results showed that these wheat varieties (lines) had three types of subunit (Null,1 and 2*) at the Glu-A1 locus,five types of subunit (7+8,7+9,14+15,17+18 and 13+16) at the Glu-B1 locus,and three types of subunit (2+12,5+10 and 5+12) at Glu-D1 locus. The frequency of good quality subunits 1,14+15 and 5+10 was 73.45% ,11.86% and 48.02%,respectively. For single locus,1,7+8,17+18 and 5+10 had a greater positive effects on protein content,wet gluten content,SDS sedimentation value,midline peak integral,midline peak value,midline time ×value,midline time × integral,development time and stability time. Nineteen different subunit combinations were discovered and 1/7+8/5+10 had excellent index in most quality traits. Most of the varieties (lines) with the subunit composition of 1/7+8/5+10 had comprehensively outstanding quality,and those with N/7+9/2+12 and N/14+15/5+10 had poor index. |
基本信息
