| 玉米不同产量水平下穗粒结构分析 |
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| 引用本文： | 田守芳; 张学舜; 刘经纬; 刘俊恒,王凯胜.玉米不同产量水平下穗粒结构分析[J].玉米科学,2001,9(3):058-060. |
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| 作者姓名： | 田守芳; 张学舜; 刘经纬; 刘俊恒 王凯胜 |
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| 作者单位： | 1. 新乡市农科所 河南辉县市 453600
2. 郑州市土地管理局 |
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| 摘 要： | 利用相关及通径分析的方法,对河南省18年夏玉米区试255个杂交种的产量和穗部性状进行分析.认为7500kg/hm2以下的杂交种,起主要作用的依次是千粒重、穗长、行粒数、出籽率、穗粗、穗行数.在选择7500kg/hm2以上的杂交种时,除了要稳定、提高穗粗、穗行数外,必须重点对千粒重、穗长进行正向直接选择,其次是行粒数和出籽率;对秃尖、轴粗进行负向直接选择;同时要协调好各性状间遗传相关关系。
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| 关 键 词： | 玉米 区域试验 产量 穗部性状 通径分析 |
| 文章编号： | 1005-0906(2001)03-58-03 |
| 收稿时间： | 2000/12/14 0:00:00 |
| 修稿时间： | 2000年12月14 |
Analysis of Maize Ear and Grain Structure under Different Yield |
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| TIAN Shou-fang,ZHANG Xue-sun,LIU Jing-wei,LIU Jun-heng and WANG Kai-sheng.Analysis of Maize Ear and Grain Structure under Different Yield[J].Journal of Maize Sciences,2001,9(3):058-060. |
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| Authors: | TIAN Shou-fang ZHANG Xue-sun LIU Jing-wei LIU Jun-heng and WANG Kai-sheng |
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| Abstract: | By correlation and path analysis,we analysed yield and ear trait of 255 summer maize hybrids,which are regional trial in Henan province of recent 18 years.We thought that weight of thousand grains,ear length,row grains,rate of grain weight to ear weight,ear thickness and ear rows are important to maize hybrid which yield less than 7 500 kg/hm 2.When we chose the hybrids which yield more than 7 500 kg/hm 2.We should stabilize and improve their ear thickness and ear rows.But we must pay more attention first to the weight of thousand grains and ear length,then on the row grains and rate of grain weight to ear weight.Other more,we should reduce the bald tip and row thickness.At the same time,we should coordinate the hereditary relationships of all traits. |
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| Keywords: | Maize Regional trial Yirld Ear trait Path analysis |
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