Characterization of the rich haplotypes of Viviparous-1A in Chinese wheats and development of a novel sequence-tagged site marker for pre-harvest sprouting resistance
文献类型： 外文期刊
作者： Yang, Y. 1 ; Zhang, C. L. 2 ; Liu, S. X. 1 ; Sun, Y. Q. 1 ; Meng, J. Y. 1 ; Xia, L. Q. 2 ;
作者机构： 1.Inner Mongolia Agr Univ, Coll Life Sci, Hohhot 010018, Inner Mongolia, Peoples R China
2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
3.Heilongjiang Acad Agr Sci, Wheat Res Inst, Harbin 150086, Heilongjiang, Peoples R China
关键词： Bread wheat;Pre-harvest sprouting;TaVp-1A;STS marker
期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）
ISSN： 1380-3743
年卷期： 2014 年 33 卷 1 期
页码：
收录情况： SCI
摘要： Pre-harvest sprouting (PHS) reduces the quality of wheat (Triticum aestivum L.) and the economic value of the grain. Our previous studies characterized the haplotypes of Viviparous-1B (Vp-1B) and its association with PHS resistance in Chinese wheats. The objective of this study was to analyze the haplotypes of Viviparous-1A (Vp-1A) and Viviparous-1D (Vp-1D) in a collection of 103 widely-grown winter wheats in China, and their associations with PHS resistance. In total, 17 Vp-1A haplotypes were explored on chromosome 3A of bread wheat, and were located in three major regions, the third intron, fifth intron and sixth exon, and designated TaVp-1Aam, TaVp-1Aan, TaVp-1Aao, TaVp-1Abm, TaVp-1Abn, TaVp-1Agm, TaVp-1Ahm, TaVp-1Ahn, TaVp-1Aho, TaVp-1Aim, TaVp-1Ain, TaVp-1Aio, TaVp-1Ajm, TaVp-1Ajn, TaVp-1Akm, TaVp-1Alm and TaVp-1Aln, respectively. However, no allelic variation of Vp-1D was found in this set of germplasm. Based on the haplotypes explored and their average germination index values, a novel co-dominant sequence-tagged site marker of the TaVp-1A gene was developed and designated Vp1A3. In most cases, haplotype TaVp-1Agm was associated with higher resistance to PHS. By combining with our previously exploited Vp1B3 marker, the efficiency of marker-assisted selection for PHS-resistant varieties was improved. Moreover, while the haplotype combination of TaVp-1Aam and TaVp-1Ba was associated with greater PHS susceptibility, the haplotype combinations TaVp-1Agm and TaVp-1Bb, TaVp-1Agm and TaVp-1Ba, TaVp-1Aim and TaVp-1Bb, and TaVp-1Aam and TaVp-1Bb could confer higher PHS resistance and be used as potential parental lines for molecular marker-assisted wheat breeding for PHS resistance.
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