| 基于控制授粉技术的玉米籽粒生育特性与建成机制研究 |
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| 引用本文： | 冯汉宇,王志敏,孔凡娜,张敏洁,周顺利.基于控制授粉技术的玉米籽粒生育特性与建成机制研究[J].作物学报,2011,37(9):1605-1615. |
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| 作者姓名： | 冯汉宇 王志敏 孔凡娜 张敏洁 周顺利 |
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| 作者单位： | 农业部农作制度重点开放实验室 / 中国农业大学农学与生物技术学院，北京 100193 |
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| 基金项目： | 国家公益性行业(农业)科研专项(nyhyzx07-003,200903007)资助 |
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| 摘 要： | 为了探明玉米果穗不同部位籽粒生育特性及其相互之间的关系，通过中下部不授粉、整行不授粉和中上部先授粉等3种控制授粉方式，研究了3个玉米品种受精子房生育特性及其与结实率之间的关系。结果表明，控制授粉后，玉米顶部籽粒的干重和体积提高，生长发育正常，但穗粒数与穗粒重下降。底部和中部花丝不授粉的顶部籽粒，其干重与统一完全授粉和自然授粉处理的中、底部籽粒差异不大，但同穗籽粒以顶部籽粒的干重、体积为小。整行不授粉和中上部先授粉处理提高了授粉花丝的结实率，整行不授粉处理的结实率与籽粒干重、体积呈极显著正相关，中上部先授粉处理的结实率与籽粒干重、体积则呈显著负相关关系。说明玉米果穗顶部籽粒是可以正常发育的，其粒重也是可以调节的，不足的物质供应可能是顶部籽粒不能正常发育和粒重低的根本原因，增源扩库是提高穗粒重的有效措施。
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| 关 键 词： | 玉米 控制授粉 籽粒败育 粒重 结实率 |
| 收稿时间： | 2011-02-11 |
Mechanism of Maize Kernel Setting and Characteristics of Kernel Growth and Development under Controlled Pollination |
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| FENG Han-Yu,WANG Zhi-Min,KONG Fan-Na,ZHANG Min-Jie, ZHOU Shun-Li Key Laboratory of Farming System,Ministry of Agriculture/College of Agronomy & Biotechnology,China Agricultural University,Beijing ,China.Mechanism of Maize Kernel Setting and Characteristics of Kernel Growth and Development under Controlled Pollination[J].Acta Agronomica Sinica,2011,37(9):1605-1615. |
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| Authors: | FENG Han-Yu WANG Zhi-Min KONG Fan-Na ZHANG Min-Jie ZHOU Shun-Li Key Laboratory of Farming System Ministry of Agriculture/College of Agronomy & Biotechnology China Agricultural University Beijing China |
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| Institution: | Key Laboratory of Farming System, Ministry of Agriculture / College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China |
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| Abstract: | In order to clarify the characteristics of kernel growth and development within different maize ear regions and their relationships,the changes of kernel weight and kernel volume of fertilized ovaries,and their relationships with kernel setting rate of three maize cultivars were studied by three types of controlling pollination,including no-pollination within middle or basal region of ear(type I),no-pollination of whole row filaments of ear(type II) and preferred pollination of apical-middle filaments of ea... |
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| Keywords: | Maize Controlling pollination Kernel abortion Kernel weight Kernel setting rate |
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