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| 种植密度和行距配置对玉米穗位叶光合特性的影响 | |
| 引用本文： | 刘惠惠,杨吉顺,李耕,刘鹏,董树亭,杨今胜,柳京国.种植密度和行距配置对玉米穗位叶光合特性的影响[J].山东农业科学,2012,44(5):23-27. |
| 作者姓名： | 刘惠惠 杨吉顺 李耕 刘鹏 董树亭 杨今胜 柳京国 |
| 作者单位： | 1. 山东农业大学农学院,山东泰安271018;山东登海种业股份有限公司/山东省玉米育种与栽培技术重点实验室,山东莱州261448 2. 山东省花生研究所,山东青岛,266000 3. 山东农业大学农学院,山东泰安,271018 4. 山东登海种业股份有限公司/山东省玉米育种与栽培技术重点实验室,山东莱州,261448 |
| 基金项目： | 国家自然科学基金,欧盟FP7国际合作项目,国家"十二五"科技支撑计划项目,山东省财政支持农业重大应用技术创新课题(2010),山东省良种工程玉米课题(2011) |
| 摘 要： | 玉米穗位叶叶绿素含量、净光合速率(Pn)、最大光化学效率(Fv/Fm)、实际光化学效率(ΦPSⅡ)均随密度增大而呈降低趋势,且均在生育后期差异较显著。光合作用关键酶磷酸烯醇式丙酮酸羧化酶(PEP-Case)和1,5-二磷酸核酮糖羧化酶(RuBPCase)活性亦呈降低趋势。叶绿素含量、Pn、Fv/Fm、ΦPSⅡ、PEPCase和RuBPCase活性在低密度下各行距配置间均无显著差异,但在中高密度下,"80+40"配置均高于其他配置,尤其是在生育后期差异显著,适宜的行距配置可提高穗位叶光合能力。 |
| 关 键 词： | 玉米 种植密度 行距配置 穗位叶 光合特性 |
Effects of Planting Density and Row Spacing Form on Photosynthetic Characters of Maize Ear Leaf |
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| LIU Hui-hui , YANG Ji-Shun , LI Geng , LIU Peng , DONG Shu-ting , YANG Jin-sheng , LIU Jing-guo.Effects of Planting Density and Row Spacing Form on Photosynthetic Characters of Maize Ear Leaf[J].Shandong Agricultural Sciences,2012,44(5):23-27. | |
| Authors: | LIU Hui-hui YANG Ji-Shun LI Geng LIU Peng DONG Shu-ting YANG Jin-sheng LIU Jing-guo |
| Institution: | 1.College of Agronomy,Shandong Agricultural University,Taian 271018,China; 2.Shandong Denghai Seeds Co.,Ltd./ Shandong Key Laboratory of Maize Breeding and Cultivated Techniques, Laizhou 261448,China;3.Shandong Peanut Research Institute,Qingdao 266000,China) |
| Abstract: | The chlorophyll content,net photosynthesis rate(Pn),maximum photochemical efficiency of PSⅡ(Fv/Fm) and actual quantum yield of PSⅡ linear electron(ΦPSⅡ) were negatively correlated with the density,especially in the late growth stage.The activities of photosynthesis key enzymes(PEPCase and RuBPCase) performed consistent with them.The results indicated that the high density was unfavorable to photosynthesis of the ear leaves.Under low density,the chlorophyll content,Pn,Fv/Fm,ΦPSⅡ and the activities of PEPCase and RuBPCase had no significant differences among all row spacing forms;but under middle-high densities,these values of the "80+40" form were the greatest,particularly at later development stages.So,the photosynthetic capacity of ear leaves could be raised by the optimum row spacing form. |
| Keywords: | Maize Planting density Row spacing form Ear leaf Photosynthetic performance |
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