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| 油菜角果光合衰退的生理特征初步研究 | |
| 引用本文： | 李俊,袁金展,官春云,马霓,谭太龙,李光明,张春雷. 油菜角果光合衰退的生理特征初步研究[J]. 中国油料, 2013, 0(6): 644-649 |
| 作者姓名： | 李俊 袁金展 官春云 马霓 谭太龙 李光明 张春雷 |
| 作者单位： | [1]中国农业科学院油料作物研究所,农业部油料作物生物学与遗传育种重点实验室,农业部作物生理生态与栽培重点实验室,湖北武汉430062 [2]湖南农业大学,湖南长沙410128 |
| 基金项目： | 国家自然科学基金（31101124,31071372和31271671）;公益性行业（农业）科研专项（201203096）;现代农业产业技术体系建没专项资金（CARS-13）;国家科技支撑计划（2010BAD01801） |
| 摘 要： | 为研究油菜角果皮光合衰退的机理及其对产量的影响，本文以中双9号、中油杂11号和华油杂14号油菜品种为材料，测定花后角果光合及其生理特征，探讨角果光合衰退与生理指标间的相关关系及其对油菜产量的影响。研究结果表明，油菜角果皮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）的含量在叶片光合功能衰退过程中逐渐上升。不同品种间角果衰老过程中光合高值持续期不同。相关性分析结果表明，叶绿素含量、可溶性蛋白含量、SOD、CAT以及MDA含量等与角果光合速率呈现显著或极显著二次抛物线型相关关系，而与RuBPCase活性呈极显著线性正相关关系（P〈0.01）。 |
| 关 键 词： | 油菜 角果皮 光合衰退 生理特征 角果光合速率 |
Physiological characteristics of silique photosynthesis declining and its effect on rapeseed yield |
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| Affiliation: | LI Jun, YUAN Jin - zhan , GUAN Chun - yun, MA Ni , TAN Tai -long, LI Guang- ming, ZHANG Chun -lei ( 1. Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, the Ministry of Agriculture, Key Laboratory of Crop Cultivation and Physiology of the Ministry of Agriculture, Wuhan 430062, China ; 2. Hunan Agricultural University, Changsha 410128, China) |
| Abstract: | Photosynthetic rate, chlorophyll content and enzyme activity of silique wall of rapeseed were investigated to study the mechanism on declining of rapeseed silique photosynthesis and its effect on yield. Materials included 3 cultivars as Zhongshuang 9 （ZS9）, Zhongyouza 11 （ZYZ11）and Huayouza 14 （HYZ14）. Results showed that net photosynthetic rate （Pn） decreased during silique growth. Similar responses were found in ribulose 1,5 - bisphosphate carboxylase （RuBPcase） content, soluble protein content, chlorophyll content, superoxide dismutase （SOD） and catalase （CAT） activities in silique wall. The progressive increase of malondialdehyde （MDA） occurred during the silique stage. Results showed that silique photosynthetic rate had significant correlations in second-degree parabola with contents of chlorophyll, soluble protein, MDA, and activities of SOD and CAT. Furthermore, RuBPCase had highly significant linear relationships with contents of chlorophyll, soluble protein, MDA, and activities of SOD. |
| Keywords: | Brassica napus L Silique wall Photosynthesis senescence Physiological characteristic Siliquephotosynthetic rate |
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