High-molecular-weight glutenin subunit compositions in current Chinese commercial wheat cultivars and the implication on Chinese wheat breeding for quality
文献类型： 外文期刊
第一作者： Gao, Song
作者： Gao, Song;Sun, Daokun;Peng, Yanchun;Ren, Xifeng;Sun, Genlou;Liu, Weihua
作者机构：
关键词： allelic variation; cluster analysis; HMW-GS; SDS-PAGE; wheat
期刊名称：CEREAL CHEMISTRY （ 影响因子：1.984； 五年影响因子：2.043 ）
ISSN： 0009-0352
年卷期： 2020 年 97 卷 4 期
页码：
收录情况： SCI
摘要： Background and objectives Genetic diversity of high-molecular-weight (HMW) glutenin subunits is often used for wheat improvement because of its correlation with end-use quality of wheat. The objectives were (a) to characterize and analyze the HMW-GS composition of common wheat, (b) determine the diversity of high-molecular-weight glutenin subunits, and (c) elucidate the distribution characteristics of wheat good-quality subunit and quality classification. Findings The results revealed a total of 15 different alleles (3 at Glu-A1, 8 at Glu-B1, and 4 at Glu-D1) and 35 allele combinations. Glu-A1c (57.92%), Glu-A1a (62.94%), Glu-A1c (55.86%) appeared to be the most frequent alleles at Glu-A1 in Hebei, Henan, and Sichuan provinces, respectively. The Glu-B1c was the most common allele at the Glu-B1 locus in all three provinces, with frequencies of 48.75%, 55.24%, and 29.66%, respectively. Glu-D1a (66.25%), Glu-D1d (53.85%), Glu-D1a (55.17%) at the Glu-D1 locus appeared to be the common alleles in Hebei, Henan, and Sichuan provinces, respectively. Cluster analysis based on allelic similarity of Glu-1 loci classified the 528 wheat cultivars into two major categories. Conclusions These results indicated that the HMW glutenin allele compositions are not optimal for the current varieties in these provinces. A high level of quality improvement may be implemented by increasing the frequencies of Glu-A1a (1) or Glu-A1b (2*), Glu-B1i (17 + 18), Glu-D1d (5 + 10). Significance and novelty Our results revealed clear directions for wheat quality improvement in these provinces.
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