郑琪,李欣,任根深,李兴茂,张爱民.甘肃冬小麦高分子量麦谷蛋白亚基组成及其品质现状分析[J].干旱地区农业研究,2020,38(1):290~294
甘肃冬小麦高分子量麦谷蛋白亚基组成及其品质现状分析
The composition of high\|molecular\|weight glutenin subunits in Gansu winter wheats and analysis of their quality status
  
DOI:10.7606/j.issn.1000-7601.2020.01.37
中文关键词:  冬小麦  高分子量谷蛋白亚基  品质现状  甘肃省
英文关键词:winter wheat  HMW-GS  quality  Gansu Province
基金项目:国家重点研发项目(2017YFD0101003);植物细胞与染色体工程国家重点实验室开放课题(PCCE-KF-2018-01);甘肃省生物育种专项(2019GAAS07)
作者单位
郑琪 Pingliang Academy of Agricultural Sciences,Pingliang, Gansu 744000,China 
李欣 Institute of Genetics and Developmental Biology,Chinese Academy of Sciences, Beijing 100101, China 
任根深 Pingliang Academy of Agricultural Sciences,Pingliang, Gansu 744000,China 
李兴茂 Dryland Agriculture Institute, Gansu Academy of Agriculture Science, Lanzhou, Gansu 730070, China 
张爱民 Institute of Genetics and Developmental Biology,Chinese Academy of Sciences, Beijing 100101, China 
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中文摘要:
      对近年来甘肃冬麦区新育成和引进的72份冬小麦新品种(系)的高分子量麦谷蛋白亚基(HMW-GS)进行了检测和品质评价。结果表明:HMW-GS的组成中,Glu-A1位点的3种亚基类型(Null、1、2*)均有分布;Glu-B1位点主要存在5种亚基类型/组合,即7+8、7+9、6+8、13+16、20x+20y;Glu-D1位点存在Null、 2+12、5+10三种亚基类型/组合;其中,优质亚基/组合1、2*、13+16、5+10出现的频率分别为70.83%、2.78%、1.39%和33.33%。近年来甘肃冬小麦品质改良育种工作成效显著,1和7+8优质亚基频率明显提高,49个新品种(系)以1/7+8/2+12亚基组合类型为主,占44.90%;1/7+8/5+10优质亚基组合类型在新品种(系)中较少(12.24%)。因此,进一步将14+15,13+16和5+10等优质亚基导入甘肃冬麦区主栽品种,培育优质小麦新品种(系)对甘肃陇东地区小麦品质改良具有重要意义。
英文摘要:
      High\|molecular\|weight glutenin subunits (HMW-GS)is closely related to the processing quality of wheat flour. In this study, HMW-GS compositions of 72 varieties (lines) in Gansu were investigated and the quality of them was also evaluated. The results showed that these wheat varieties (lines) had three types of HMW-GS at the Glu-A1 locus, namely, Null, 1, and 2*. There were five types of HMW-GS at the Glu-B1 locus: 7+8, 7+9, 6+8, 13+16,and 20x+20y. At the Glu-D1 locus, three types of HMW-GS existed. They were Null, 2+12 and 5+10. The frequency of HMW-GS 1, 2*, 13+16, and 5+10 was 70.83%, 2.78%, 1.39% and 33.33%, respectively. In recent years, the improvement of Null and 7+9 subunits composition at Glu-A1 and Glu-B1 loci in Gansu winter wheat breeding is remarkable. The frequency of good processing quality subunits of 1 and 7+8 were obviously increased. The combination of 1/7+8/2+12 was the major type in new wheat varieties (lines), which accounted for 44.90%. The percentage of new varieties (lines) with high quality subunit combination of 1/7+8/5+10 was low, accounting for only 12.24%. Therefore, introducing good quality subunits, such as 14+15 and 13+16 at Glu-B1 locus and 5+10 at Glu-D1 locus into Gansu winter varieties was highly desirable. It is also important for bread quality improvement and release of new wheat varieties in wheat production areasin east of Gansu.
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