Effects of different Rht-B1b, Rht-D1b and Rht-B1c dwarfing genes on agronomic characteristics in wheat

文献类型: 外文期刊

第一作者: Li, Xing-Pu

作者: Li, Xing-Pu;Lan, Su-Que;Liu, Yu-Ping;Gale, M. D.;Worland, T. J.

作者机构:

关键词: wheat (Triticum aestivum L.);dwarfing gene;near-isogenic line (NILs);agronomic characteristics

期刊名称:CEREAL RESEARCH COMMUNICATIONS ( 影响因子:0.85; 五年影响因子:1.067 )

ISSN: 0133-3720

年卷期: 2006 年 34 卷 2-3 期

页码:

收录情况: SCI

摘要: The value of different dwarfing genes in winter wheat breeding was studied using 6 near-isogenic lines carrying different Rht dwarfing genes over three years experiment. Results showed that both the Rht-B1b and Rht-D1b semi-dwarfing genes had significantly positive effects on kernel number and grain weight per spike, and had significantly negative effects on 1000-grain weight comparing to the tall line (Rht-B1a). The Rht-B1c dwarfing gene had a significantly negative effect on kernel number per spike, and had positive effect on 1000-grain weight. The combination of the Rht-D1b and Rht-B1c gene showed significantly negative effect on yield components. All of these 5 dwarfing or semi-dwarfing genotypes mentioned above had significantly negative effect on plant height and no significantly effect on the area of flag leaf, spikelets per spike and spike length.

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