欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (15): 76-80.

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

玉米单株农艺性状与粒重的相关和通径分析

赵晓燕   

  • 收稿日期:2011-02-16 修回日期:2011-03-30 出版日期:2011-06-25 发布日期:2011-06-25

Correlation and Path Analysis Between Maize Single Plant Agronomic Traits and Grain Weight

  • Received:2011-02-16 Revised:2011-03-30 Online:2011-06-25 Published:2011-06-25

PDF (PC)

870

摘要：

以分别来自贵州本省及中国北方且粒型、株型不同的6个杂交玉米品种及2个玉米群体为研究材料，在乳熟期基于单株对株高、穗位高、茎粗及穗位叶面积进行调查，成熟后再对其单株粒重进行调查，并分析各农艺性状对粒重的相关性及贡献大小。相关分析结果表明：8个玉米材料的株高、穗位高与单株粒重的相关性在不同材料间有差异，而单株茎粗及穗位叶面积与粒重间的相关性全部达到了显著水平。通径分析结果表明：在对单株粒重的直接作用中，以茎粗最大且在不同品种间表现稳定；其次为株高与叶面积，穗位高的直接作用依品种不同而差异很大；穗位叶面积在茎粗对粒重的间接影响中贡献最大，而茎粗在穗位叶面积、株高及穗位高对粒重的间接作用中均发挥着最大或较大的正向作用；穗位叶面积与穗位高对粒重的间接贡献都大于直接贡献。

关键词: 施氮量, 施氮量, 超级稻, 源库特性

Abstract:

Not only ear traits but also stem and leaf traits play an important role in formation of maize single plant grain weight. Six maize single-cross hybrids of ‘Qiandan 16’, ‘Guidan 8’, ‘Qianhuanuo’, ‘Denghai 11’, ‘Xianyu 335’, ‘Zhengdan 958’ and two maize populations of ‘Pingtanghuang’, ‘Zhongqun 11’ were planted to study the correlation between maize agronomic traits and grain weight, and the effects of each agronomic trait on grain weight. Plant height, ear height, stem diameter and ear-leaf area were measured at the end of the growing period , and grain weight was measured after harvesting on the basis of single plant. The result shows that the stem diameter and ear-leaf area had significant correlations with grain weight in total materials while the correlations between the other traits and grain weight were unstable. In addition, stem diameter had the most stable and largest direct effects on grain weight; ear leaf area played the most important role in indirect effects of stem diameter to grain weight; stem diameter played the most important part in indirect effects of the other traits to grain weight.

中图分类号: