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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (9): 126-132.

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

玉米穗位叶宽与茎粗相关性的初步研究

赵晓燕   

  • 收稿日期:2010-11-19 修回日期:2011-01-19 出版日期:2011-04-25 发布日期:2011-04-25

Preliminary Research of The Correlation of Maize Stem-diameter and Ear-leaf Breadth

  • Received:2010-11-19 Revised:2011-01-19 Online:2011-04-25 Published:2011-04-25

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摘要：

在乳熟期对玉米单交种‘黔单16’的株高、穗位高、茎粗、穗位叶长与宽进行基于单株的调查时发现：相对于其它农艺性状之间的关系，穗位叶宽与茎粗之间有更为一致的变化趋势，且这种一致性在不同小区间表现稳定。为了验证二者之间一致的变化趋势是否在不同玉米材料上普遍存在，以及明确二者相互关系的性质特点，于是对正在进行试验的其它5个玉米单交种、2个玉米开放授粉群体的以上农艺性状进行了基于单株的同样考察。结果表明：所有材料的穗位叶宽与茎粗都在0.001水平上达到了直线正相关，而其它农艺性状之间的直线相关系数则呈现较大的波动性；同时，单交种的相关系数大于群体，如果用穗位叶宽与茎粗的比值来描述二者之间的关系特点，则不同材料的这一比值具有极显著差异。考察结果一致说明：玉米乳熟期穗位叶宽与茎粗之间存在发育上的高度一致性；如果以穗位叶宽与茎粗的比值来描述二者的关系特点，则这一值因遗传背景不同而有极显著差异；二者之间发育上的直线相关性及同一遗传背景下的比值不因密度等环境不同而发生改变。

关键词: 关黄柏, 关黄柏, 黄檗, 小檗碱, 巴马汀, 药根碱, 高效液相色谱法, 含量测定

Abstract:

The ear-leaf and stem of maize affect directly yield of corn plant, so it is important to determine the interplay between the ear-leaf and the stem. 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 the ear-leaf and the stem. At the end of the growing period , plant height, ear height, stem diameter, ear-leaf length, ear-leaf breadth were measured on the basis of corn plant. The results showed that the ear-leaf breadth had significant correlations with stem diameter(p<0.001) in total materials while the correlations between other economical characters were unstable. On the other hand, single-cross hybrids had more significant correlation between ear-leaf breadth and stem diameter than populations; the ratio between ear-leaf breadth and stem diameter is stable in the same material but different in the different materials. All these results showed that in Guiyang region at the end of growing maize ear-leaf breadth had markedly consistency with stem diameter; the consistency was changeless in total materials and the ratio was convertible in different materials; the consistency and the ratio were determined by heredity.