| 水分胁迫下磷对玉米叶片光合色素的影响 |
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| 引用本文： | 曲 东,王保莉,山 仑.水分胁迫下磷对玉米叶片光合色素的影响[J].西北农林科技大学学报(社会科学版),1996,24(4):94-97. |
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| 作者姓名： | 曲 东 王保莉 山 仑 |
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| 作者单位： | 西北农业大学资源与环境科学系，西北农业大学实验中心，西北农业大学基础科学系，中国科学院西北水土保持研究所 |
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| 基金项目： | 国家攀登计划9219－5专题资助项目 |
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| 摘 要： | 采用水培实验，以ＰＥＧ进行水分胁迫（－０．５ＭＰａ），测定了有磷和缺磷情况下玉米苗期叶片中叶绿素、类胡萝卜素及原叶绿素酸酯随不同胁迫周期的变化。结果表明，水分胁迫时磷能使叶绿素ａ和类胡萝卜素降解减慢，表现为Ｃｈｌａ／ｂ值增大及Ｃｈｌｔ／Ｃａｒｏ值随胁迫周期延长而呈Ｖ．型曲线变化。干旱缺磷能造成原叶绿素酸酯相对积累，是导致Ｃｈｌａ下降的重要因素。水分胁迫下叶绿素ａ，ｂ和Ｃａｒｏ及Ｐｃｈｌ含量均呈下降趋势，而交替变换水处理能减缓光合色素的分解
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| 关 键 词： | 水分胁迫 光合色素 磷 玉米 |
Effect of Phosphorus on Photosynthetic Pigment of Maize under Water Stress |
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| QuDong,Wang Baoli,Shan Lun,Wang Peihong.Effect of Phosphorus on Photosynthetic Pigment of Maize under Water Stress[J].Journal of Northwest Sci-Tech Univ of Agr and,1996,24(4):94-97. |
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| Authors: | QuDong Wang Baoli Shan Lun Wang Peihong |
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| Institution: | QuDong;Wang Baoli;Shan Lun;Wang Peihong(Department of Natural Resources and Environment Protection,The Central Laboratory,Northwestern Insititute of Soil and Water Conservation,Yangling,Shaanxi,712100) |
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| Abstract: | The Changes of contents of cHorophyll(Chl),carotinioid(Caro)andProchlorophyllide(Pchl)under the phosphorus containing and phosphorus-free condi-tions during different water stress periods were determined. The results showed that thecontents of Chl a,Chl b,Caro and Pchl decresed,but with different rates.Thge value of Chl a/b was increased and the change of Chl/Caro appeared in a V-shape.Highly variedwater treatment could decrease the decomposition of photosynthetic pigment.Phospho-rus could efficiently reduce the decrease of Chl a and Caro.Water stress and P-freecould cause the accumulation of Pchl content,which is the main cause that Chl a contentdecreases. |
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| Keywords: | water stress photosynthetic pigment phosphorus maize |
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