| 玉米杂交种苗期耐热性评价 |
| |
| 引用本文： | 牛丽,刘源,于康珂,刘荣花,李潮海,刘天学.玉米杂交种苗期耐热性评价[J].玉米科学,2015,23(1):107-114. |
| |
| 作者姓名： | 牛丽 刘源 于康珂 刘荣花 李潮海 刘天学 |
| |
| 作者单位： | 河南农业大学农学院, 郑州 450002;河南农业大学农学院, 郑州 450002;河南农业大学农学院, 郑州 450002;河南省气象科学研究所, 郑州 450003;河南农业大学农学院, 郑州 450002;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;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 |
| |
| 基金项目： | 公益性行业(农业)科研专项(201203029)、公益性行业(气象)科研专项(GYHY201006041)、"十二五"国家粮食丰产科技工程(2012BAD04B07) |
| |
| 摘 要： | 以24个适宜黄淮海地区种植的玉米杂交种为试验材料,采用水培试验,人工模拟高温条件,测定玉米株高、茎粗、叶面积、根条数、胚根长、地上部干物质量、根系干物质量、总干物质量、根冠比和叶绿素相对含量等10个性状,以各性状的耐热系数作为参数,运用主成分分析、聚类分析和逐步回归等对其耐热性进行综合评价。结果表明,总干物质量、根冠比、茎粗、叶面积、叶绿素相对含量和胚根长这6个性状可作为玉米杂交种苗期耐热性鉴定指标。根据综合耐热能力的大小,把24个玉米杂交种划分为高度耐热型、中度耐热型、弱耐热型和热敏感型4类。
|
| 关 键 词： | 玉米 耐热性 主成分分析 逐步回归 综合评价 |
| 收稿时间： | 2014/9/25 0:00:00 |
Evaluation of Heat-Tolerance of Maize Hybrids at Seedling Stage |
| |
| NIU Li,LIU Yuan,YU Kang-ke,LIU Rong-hu,LI Chao-hai and LIU Tian-xue.Evaluation of Heat-Tolerance of Maize Hybrids at Seedling Stage[J].Journal of Maize Sciences,2015,23(1):107-114. |
| |
| Authors: | NIU Li LIU Yuan YU Kang-ke LIU Rong-hu LI Chao-hai and LIU Tian-xue |
| |
| Institution: | College of Agronomy, Henan Agricultural University, Zhengzhou 450002;College of Agronomy, Henan Agricultural University, Zhengzhou 450002;College of Agronomy, Henan Agricultural University, Zhengzhou 450002;Henan Institute of Meteorological Sciences, Zhengzhou 450003;College of Agronomy, Henan Agricultural University, Zhengzhou 450002;National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002;Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450002, China;College of Agronomy, Henan Agricultural University, Zhengzhou 450002;National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002;Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450002, China |
| |
| Abstract: | A hydroponic experiment was carried out with 24 maize hybrids as test materials that were widely grown in Huang-Huai-Hai area. The heat tolerance coefficient about the total dry matter weight, shoot dry matter weight, root dry matter weight, root-shoot ratio, plant height, stem diameter, leaf area, SPAD value, root number and radicle length of each hybrid was evaluated under heat stress by principal component analysis, hierarchical cluster analysis and regression analysis. The results showed that total dry matter weight, root-shoot ratio, stem diameter, leaf area, SPAD value and radicle length, six indexes can be used for identification of heat tolerance of maize hybrids seedlings. According to comprehensive heat-tolerance, twenty-four maize hybrids were divided into four heattolerance types, highly heat-resistant type, moderate heat-resistant type, weakly heat-resistant and heat-sensitive type. |
| |
| Keywords: | Maize Heat resistance Principal component analysis Stepwise regression Comprehensive evaluation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《玉米科学》浏览原始摘要信息 |
| 点击此处可从《玉米科学》下载免费的PDF全文 |
|
