| 不同密度玉米群体子粒转化酶与灌浆强度的关系 |
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| 引用本文： | 李光彦,许艳丽,卢霖,王庆燕,董志强.不同密度玉米群体子粒转化酶与灌浆强度的关系[J].玉米科学,2016,24(4):83-89. |
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| 作者姓名： | 李光彦 许艳丽 卢霖 王庆燕 董志强 |
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| 作者单位： | 中国农业科学院作物科学研究所/农业部作物生理生态与栽培重点开放实验室, 北京 100081,中国农业科学院作物科学研究所/农业部作物生理生态与栽培重点开放实验室, 北京 100081,中国农业科学院作物科学研究所/农业部作物生理生态与栽培重点开放实验室, 北京 100081,中国农业科学院作物科学研究所/农业部作物生理生态与栽培重点开放实验室, 北京 100081,中国农业科学院作物科学研究所/农业部作物生理生态与栽培重点开放实验室, 北京 100081 |
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| 基金项目： | 国家自然科学基金项目（31470087）、国家科技支撑计划项目（2012BAD04B01-07，2012BAD4B02）、中国农业科学院创新工程项目 |
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| 摘 要： | 以中单909和吉单35为试验材料,在大田条件下设4.5万、7.5万、10.5万株/hm~23个种植密度,研究不同密度群体子粒转化酶与子粒灌浆强度的关系。结果表明,在花后10~50 d内,两个品种玉米子粒酸性转化酶呈降低趋势,中性转化酶呈先增加后降低趋势。随着种植密度增加,灌浆速率降低,子粒千粒重降低;两个品种玉米产量呈先增加后降低趋势,中单909和吉单35均在7.5万株/hm~2时达到最高产量。灌浆10~30 d较高的转化酶活性对灌浆起到促进作用;灌浆40~50 d较高的转化酶活性不利于子粒灌浆。
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| 关 键 词： | 玉米 种植密度 转化酶 子粒灌浆 |
| 收稿时间： | 2015/12/18 0:00:00 |
Correlation Analysis on Invertase and Grain Filling of Spring Maize in Different Densities |
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| LI Guang-yan,XU Yan-li,LU Lin,WANG Qing-yan and DONG Zhi-qiang.Correlation Analysis on Invertase and Grain Filling of Spring Maize in Different Densities[J].Journal of Maize Sciences,2016,24(4):83-89. |
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| Authors: | LI Guang-yan XU Yan-li LU Lin WANG Qing-yan and DONG Zhi-qiang |
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| Institution: | Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Eco-physiology and Cultivation, Beijing 100081, China,Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Eco-physiology and Cultivation, Beijing 100081, China,Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Eco-physiology and Cultivation, Beijing 100081, China,Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Eco-physiology and Cultivation, Beijing 100081, China and Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Eco-physiology and Cultivation, Beijing 100081, China |
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| Abstract: | The maize cultivars ZD909 and JD35 were used to study the relationship between invertase in grain and grain-filling, in field condition with different densities. The result showed that in 10 to 50 days after anthesis, the acid invertase activity decreased and neutral invertase activity rise first then decreased. With the increasing of plant density, grain-filling rate and thousand-grain weight decreased, and reached the maximum yield at 75 000 plant/ha. Correlation analysis showed that higher invertase activity promoted grain-filling in 10 to 30 days after anthesis, probably in favor of endosperm cell proliferation, and were not conducive to grain filling. |
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| Keywords: | Maize Density Invertase Grain filling |
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