| 油菜短柄叶光合衰退及其对产量的影响 |
| |
| 引用本文： | 李俊,张春雷,赵懿,马霓,余利平. 油菜短柄叶光合衰退及其对产量的影响[J]. 中国油料作物学报, 2011, 0(5) |
| |
| 作者姓名： | 李俊 张春雷 赵懿 马霓 余利平 |
| |
| 作者单位： | 中国农业科学院油料作物研究所农业部油料作物生物学重点开放实验室农业部作物生理生态与栽培重点开放实验室;北京市延庆县农业技术推广站; |
| |
| 基金项目： | 国家自然科学基金(31101124); 现代油菜产业技术体系专项; 国家科技支撑计划(2009BAD01B09) |
| |
| 摘 要： | 以中双9号、中油杂11号和华油杂14号油菜为材料,测定花后短柄叶光合速率及生理指标,探讨短柄叶光合衰退与叶绿素含量等因素之间的关系及其对油菜产量的影响。结果表明,油菜短柄叶光合速率随叶片衰老而逐渐降低,1,5-二磷酸羧化酶(RuBPCase)、可溶性蛋白和叶绿素含量,以及超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性均呈现出下降趋势,膜脂过氧化作用产物丙二醛(MDA)在叶片光合功能衰退过程中含量逐渐上升。油菜叶片光合衰退与RuBPCase含量、可溶性蛋白含量、叶绿素含量和SOD活性存在显著相关关系,表明光合速率的下降可能与油菜叶片衰老过程中N含量、叶绿素降解及蛋白质合成受抑制相关;SOD和CAT水平逐渐降低及MDA含量升高也表明,叶片衰老过程中氧自由基胁迫抑制光合作用。叶片光合作用与油菜单株产量的相关关系分析结果表明,油菜短柄叶光合速率,特别是短柄叶衰退的中后期光合速率是影响油菜产量的重要因素。
|
| 关 键 词： | 油菜 短柄叶 光合衰退 1 5-二磷酸羧化酶 超氧化物歧化酶 过氧化氢酶 丙二醛 |
Short-stalk leaf photosynthesis declining and its effect on rapeseed yield |
| |
| LI Jun,ZHANG Chun-lei,ZHAO Yi,,MA Ni,YU Li-ping. Short-stalk leaf photosynthesis declining and its effect on rapeseed yield[J]. Chinese Journal of Oil Crop Sciences, 2011, 0(5) |
| |
| Authors: | LI Jun ZHANG Chun-lei ZHAO Yi MA Ni YU Li-ping |
| |
| Affiliation: | LI Jun1,ZHANG Chun-lei1,ZHAO Yi1,2,MA Ni1,YU Li-ping1(1.Oil Crops Research Institute,CAAS,Key Laboratory of Oil Crop Biology of the Ministry of Agriculture,Key Laboratory of Crop Cultivation and Physiology of the Ministry of Agriculture,Wuhan 430062,China,2.Beijing Yanqing County Agricultural Technology Extension Station,Beijing 102100,China) |
| |
| Abstract: | Photosynthetic rate,chlorophyll content and enzyme activity of short-stalk leaves of rapeseed(Brassica napus) seedlings were investigated to examine photosynthesis senescence effect on yield.The materials included 3 cultivars which were Zhongshuang 9,Zhongyouza 11 and Huayouza 14.Result showed that net photosynthetic rate(Pn) decreased slightly at early stage of senescence,but decreased remarkably at later stage.Similar responses were found in ribulose 1,5-bisphosphate carboxylase(RuBPCase) content,soluble ... |
| |
| Keywords: | Brassica napus L Short-stalk leaf Photosynthesis senescence 1 5-bisphosphate carboxylase Superoxide dismutase Catalase Malondialdehyde |
| 本文献已被 CNKI 等数据库收录！ |
|
