文档介绍：小麦产量构成因素的相关性分析
摘要:通过对2009-2012年湖北省3个小麦(triticum aestivum l.)主导品种郑麦9023、襄麦55、襄麦25的产量及其构成因素调查分析表明,有效穗数对产量的贡献最大, 5, 其次是千粒重, 2,贡献最小的是每穗粒数, 7,相关分析和通径分析结果一致;不同年度间,千粒重的变异系数最大,其次是有效穗数,最小的是每穗粒数。因此,襄阳市麦区应在群体适宜有效穗数的基础上,把增加穗粒数和千粒重作为突破口,实现三者的最佳协调关系,力争达到产量最大化。
关键词:小麦(triticum aestivum l.);变异系数;产量构成因子;相关性分析
中图分类号: 文献标识码:a 文章编号:0439-8114(2012)23-5287-02
correlation analysis on ponents of wheat
zhou fang-ju,chen qiao-sheng,zhang dao-rong,tang qing-yi,jiang qi-bin,wang yan,
liu xian-bin,lu tian-tai
(xiangyang agricultural science academy of hubei province, xiangyang 441057, hubei, china)
abstracts: according to the investigation and analysis on yield ponent factors of three wheat(triticum aestivum l.) cultivars, zhengmai 9023, xiangmai 55 and xiangmai 25 during 2009~2012, effective spike number had the most significant positive correlation with actual production(path= 5); 1 000-kernel-weight was the second (path=); while grain number per spike had the lowest (path= 7) correlation. the results of correlation analysis and path analysis were consistent. the variation coefficient of 1 000-kernel-weight during different year was the highest, followed by effective panicle; the lowest was of grain number per spike. in order to reach the maximum yield, the breakthrough should be realized on increasing the grain number and 1 000-kernel-weight based on