ACTA AGRICULTURAE BOREALI-SINICA ›› 2019, Vol. 34 ›› Issue (3): 75-81. doi: 10.7668/hbnxb.201751750

Special Issue: Wheat

• Crop Genetics·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Genetic Diversity of HMW-GS and Its Relationship with Quality of Wheat Germplasms from Different Regions

ZHANG Ziyang, JIANG Xiaoling, WANG Zhiyu, ZHU Qidi, LIU Mingjiu, RU Zhengang   

  1. Henan Institute of Science and Technology, Collaborative Innovation Center of Modern Biological Breeding of Henan Province, Key Discipline Open Laboratory on Crop Molecular Breeding of Henan Province, Xinxiang 453003, China
  • Received:2019-01-03 Published:2019-06-28

Abstract: In order to clarify the relationship between high molecular weight glutenin subunit (HMW-GS) and wheat processing quality,148 wheat germplasms from different regions of the world were used to study the genetic diversity of high molecular weight glutenin subunits(HMW-GS) and its relationship with the quality of flour and steamed bread. Results showed that the tested materials had abundant polymorphisms at the three gene loci of Glu-A1, Glu-B1 and Glu-D1, of which, three, seven and seven types of subunits were detected, respectively. The highest frequency of allele was 1, 7+9 and 2+12 at each of the three loci, which accounted for 56.8%, 47.3% and 45.9%, respectively. A total of 35 HMW-GS combinations were identified in the tested materials, among which the combinations of(1/7+9/2+12), (1/7+8/5+10), (N/7+9/2+12) and(1/7+9/5+10) had higher frequencies. The compositions of HMW-GS were different in wheat varieties(lines) from different regions. Moreover, the most abundant type of subunit and the highest frequency of high-quality subunit were found in germplasms from aboard and Huanghuai winter wheat region. Furthermore, subunits 1, 2*, 7+8, 17+18 and 5+10 had positive effects on gluten strength, while subunits 2*, 17+18 and 2+10 had important influence on hardness and chewiness of steamed bread. The genotypes with combination forms of(1/14+15/2+12), (1/7+9/5+10) or(N/7+8/2+12) had good processing quality of steamed bread.

Key words: Wheat, HMW-GS, Steamed bread, Quality

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Cite this article

ZHANG Ziyang, JIANG Xiaoling, WANG Zhiyu, ZHU Qidi, LIU Mingjiu, RU Zhengang. Genetic Diversity of HMW-GS and Its Relationship with Quality of Wheat Germplasms from Different Regions[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2019, 34(3): 75-81. doi: 10.7668/hbnxb.201751750.

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