| 玉米花期耐高温品种的筛选与综合评价 |
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| 引用本文： | 于康珂,刘源,李亚明,孙宁宁,詹静,尤东玲,牛丽,李潮海,刘天学.玉米花期耐高温品种的筛选与综合评价[J].玉米科学,2016,24(2):62-71. |
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| 作者姓名： | 于康珂 刘源 李亚明 孙宁宁 詹静 尤东玲 牛丽 李潮海 刘天学 |
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| 作者单位： | 河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002,河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002,河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002;河南省平顶山市农业干部学校, 河南平顶山 467000,河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002,河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002,河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002,河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002,河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002;河南粮食作物协同创新中心, 郑州 450002,河南农业大学农学院, 郑州 450002;省部共建小麦玉米作物学国家重点实验室, 郑州 450002;河南粮食作物协同创新中心, 郑州 450002 |
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| 基金项目： | "十二五"国家粮食丰产科技工程(2012BAD04B07)、公益性行业(农业)科研专项(201203029)、公益性行业(气象)科研专项(GYHY201006041)、郑州市科技计划项目(131PPTGG413-4) |
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| 摘 要： | 以30个黄淮海地区主栽玉米品种为试材,研究高温对不同玉米杂交种的形态、叶片生理以及产量构成因素的影响,筛选玉米杂交种花期耐热性评价指标,对30个玉米杂交种花期耐热性进行综合评价。结果表明,高温胁迫阻碍了玉米雌雄穗的分化,造成植株生长中心转移,且不同基因型玉米间存在显著差异。高温处理后,穗位叶片变薄,其比叶重、叶绿素相对含量及净光合速率均有所下降,穗位叶片浸泡液相对电导率显著增加。高温胁迫使玉米果穗行粒数明显减少,百粒重及子粒产量显著下降。综合不同品种各性状耐热系数的相关性分析及逐步回归分析结果得出,产量、百粒重、穗长、穗粗和结实率可作为评价玉米杂交种花期耐热性的主要指标。
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| 关 键 词： | 玉米 高温胁迫 耐热系数 主成分分析 |
| 收稿时间： | 2015/11/14 0:00:00 |
Screening and Comprehensive Evaluation of Heat-tolerance of Maize Hybrids in Flowering Stage |
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| YU Kang-ke,LIU Yuan,LI Ya-ming,SUN Ning-ning,ZHAN Jing,YOU Dong-ling,NIU Li,LI Chao-hai and LIU Tian-xue.Screening and Comprehensive Evaluation of Heat-tolerance of Maize Hybrids in Flowering Stage[J].Journal of Maize Sciences,2016,24(2):62-71. |
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| Authors: | YU Kang-ke LIU Yuan LI Ya-ming SUN Ning-ning ZHAN Jing YOU Dong-ling NIU Li LI Chao-hai and LIU Tian-xue |
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| Institution: | Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002,Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002,Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002;Pingdingshan Agricultural Cadre Technical Secondary School, Pingdingshan 467000,Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002,Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002,Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002,Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002,Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002;Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450002, China and Agronomy College, Henan Agricultural University, Zhengzhou 450002;State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002;Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450002, China |
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| Abstract: | In order to select the heat resistance evaluation index, and evaluate the heat resistance of maize hybrid in flowering stage, the field experiment was carried out with 30 maize hybrids as test materials that were widely grown in Huang-Huai-Hai area. And the effects of high temperature treatment on the morphology, physiology and yield traits of different genotypes maize were studied. The results showed that high temperature stress block the ear differentiation of maize which caused the plant growth centre transfer showing up the plant height increased and an thesis-silking interval(ASI) prolonged significantly. Under heat stress, plant ear-leaf has become thinner and weight dropped significantly, the relative chlorophyll content and net photosynthetic rate decreased, while soaking liquid conductivity increased significantly. High temperature stress result in the row number per ear, grain number per row and 100-grain weight decreased, and grain yield reduced significantly. According to the various different genotype maize properties of heat resistant coefficient of correlation analysis and stepwise regression analysis, grain yield, 100-grain weight, ear length, ear diameter and setting rate, could be used as the major index of high temperature resistance of maize hybrid during flowering. Clustering analysis using comprehensive evaluation value as evaluation parameters. |
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| Keywords: | Maize High temperature stress Heat tolerance coefficient Principal component analysis |
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