ACTA AGRICULTURAE BOREALI-SINICA ›› 2017, Vol. 32 ›› Issue (2): 131-137. doi: 10.7668/hbnxb.2017.02.020

Special Issue: Wheat Biotechnology

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Functional Analysis and Distribution of Allelic Variations of TaCwi-A1 Gene Related to Kernel Weight in Yellow and Huai River Valleys Facultative Wheat Zone

LIU Yongwei1, ZHOU Shuo1, WANG Xuezheng2, SUN Guozhong1, ZHU Jinyong1, HAN Qiufen1, LI Chunjie3, ZHAO He1, WANG Haibo1   

  1. 1. Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Plant Genetic Engineering Center of Hebei Province, Shijiazhuang 050051, China;
    2. Dryland Farming Institute, Hebei Academy of Agricultural and Forestry Science, Hengshui 053000, China;
    3. The Seed Management Station of Hebei Province, Shijiazhuang 050031, China
  • Received:2017-01-23 Published:2017-04-28

Abstract: In order to evaluate the breeding application value of two kind of allelic variations (TaCwi-A1a and TaCwi-A1b)of TaCwi-A1 gene,which was related to wheat kernel weight.In this study,539 wheat varieties (lines)in Yellow and Huai River Valleys Facultative Wheat Zone in China were genotyped using functional markers of TaCwi-A1 to determine the allelic variation types,in which the frequencies of TaCwi-A1a and TaCwi-A1b could be detected.To compare the differences of phenotypic traits of TaCwi-A1a and TaCwi-A1b,thousand kernel weight (TKW)of released varieties,region test varieties,and breeding varieties was evaluated in three environments;and kernel length (KL),kernel width (KW),and kernel area (KA)was also evaluated in one environment.The results showed that the frequencies of TaCwi-A1a and TaCwi-A1b were 65.03% and 34.97% in all test materials,in which the frequency of TaCwi-A1a was significantly higher than TaCwi-A1b.Analysis of phenotypic traits of grain showed that TKW of TaCwi-A1a was significantly higher than TaCwi-A1b in released varieties,region test varieties and breeding varieties.Similarly,KL and KW of TaCwi-A1a were also significantly higher than TaCwi-A1b.This study further verified the additive effect of TaCwi-A1a on phenotypic traits of grain,which showed that TaCwi-A1a was superior allelic variation for the grain weight and its constituent elements.In addition,the study identified the distribution of TaCwi-A1 in Yellow and Huai River Valleys Facultative Wheat Zone in China,and provided useful information for the marker-assisted selection of wheat.

Key words: Common wheat, TaCwi-A1, Molecular marker, Allelic variation, Thousand kernel weight, Kernel length, Kernel width

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Cite this article

LIU Yongwei, ZHOU Shuo, WANG Xuezheng, SUN Guozhong, ZHU Jinyong, HAN Qiufen, LI Chunjie, ZHAO He, WANG Haibo. Functional Analysis and Distribution of Allelic Variations of TaCwi-A1 Gene Related to Kernel Weight in Yellow and Huai River Valleys Facultative Wheat Zone[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(2): 131-137. doi: 10.7668/hbnxb.2017.02.020.

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