Identification on Pre-harvest Sprouting Resistance and Evaluation to Related Molecular Markers in Chinese Wheat Cultivars

doi:10.7668/hbnxb.2010.04.002

Abstract

Abstract: Pre-harvest sprouting (PHS) in wheat is an important problem that results in significant economic loss to farmers. In this study，the PHS resistances of 76 Chinese wheat cultivars collected from ten wheat growing provinces were identified; Moreover，the distribution of three molecular markers Vp1B3，Xbarc310 and Barc294 associated with PHS resistance in the 75 cultivars was identified，aimed to evaluate the efficiency of these markers in selecting genotypes with higher PHS resistances. The results indicated that there is significant difference of PHS resistances in above wheat cultivars. The allelic variations of Vp1 gene are not associated with the PHS resistance; Vp1B3 was non-specific and unsuitable for marker assisted selection (MAS) in breeding. The 3As QTL (QPhs-3AS) is a critical component of seed dormancy，Xbarc310 and Barc294 were specific and suitable for MAS. The usefulness of current information in wheat breeding is discussed.

Key words: Wheat, Pre-harvest sprouting, Molecular marker

CLC Number:

SUN Guo-zhong, YOU Guang-xia, SUN Jing-yan, ZHANG Xiu-ying, WU Shu-zhen, YUAN Fei, WANG Hai-bo, XIAO Shi-he. Identification on Pre-harvest Sprouting Resistance and Evaluation to Related Molecular Markers in Chinese Wheat Cultivars[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(4): 6-11. doi: 10.7668/hbnxb.2010.04.002.

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