| 利用通径和因子分析研究宁夏玉米鉴定性状指标 |
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| 引用本文： | 程晋龙,王晖,杨国虎,马云,史天福.利用通径和因子分析研究宁夏玉米鉴定性状指标[J].安徽农业科学,2012,40(20):10393-10396. |
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| 作者姓名： | 程晋龙 王晖 杨国虎 马云 史天福 |
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| 作者单位： | 1. 宁夏农林科学院农作物研究所,宁夏永宁,750105
2. 宁夏科泰种业有限公司,宁夏永宁,750105 |
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| 基金项目： | “十二五”农村领域国家科技支撑计划项目，宁夏区重大科技攻关与示范项目，宁夏区自然科学基金 |
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| 摘 要： | 目的]研究宁夏玉米(Zea mays L.)杂交组合的鉴定评价指标。方法]以宁夏自育的一些不同类型粒用玉米杂交组合为材料,进行通径分析和因子分析。结果]玉米组合间各数量性状存在较大差异,各数量性状(除秃尖长外)均与产量存在显著正相关关系,穗粒重、收获穗、出籽率、穗长、株高和百粒重是对玉米产量影响相对重要的性状。结论]明确了产量、穗长、收获穗和出籽率、株高、百粒重、穗行数是宁夏玉米杂交种(组合)鉴定评价指标。
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| 关 键 词： | 玉米 选择性状指标 通径分析 因子分析 |
Study on Selection Trait Indexes of Maize by Path Analysis and Factor Analysis in Ningxia |
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| Institution: | CHENG Jin-long et al(Crop Research Institute,Ningxia Academy of Agriculture and Forestry Sciences,Yongning,Ningxia 750105) |
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| Abstract: | Objective] To study the selection trait indexes of maize(Zea mays L.) in Ningxia.Method] The selection trait indexes were studied of maize hybridized combinations in recent years by using path analysis and factor analysis in Ningxia.Result] All main quantitative traits had wide variation,main quantitative traits had significantly positive relations with grain yield except barren ear tip length,grain weight per ear,number of harvesting ears,percentage of thresh,ear length,plant height and 100-grain weight had important effect on maize grain yield.Conclusion] Six key factors,including yield,ear length,number of harvesting ears and percentage of thresh,plant height,100-grain weight and row number per ear were identified as the selection trait indexes of maize in Ningxia. |
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| Keywords: | Maize(Zea may L ) Selection indexes Path analysis Factor analysis |
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