| 干旱对玉米幼苗吸收磷素的影响 |
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| 引用本文： | 胡安畅,沈秀瑛,戴俊英,顾慰连,赵润东,王光洁,郑波.干旱对玉米幼苗吸收磷素的影响[J].核农学报,1991,5(2):101-106. |
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| 作者姓名： | 胡安畅 沈秀瑛 戴俊英 顾慰连 赵润东 王光洁 郑波 |
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| 作者单位： | 沈阳农业大学,沈阳农业大学,沈阳农业大学,沈阳农业大学,沈阳农业大学,沈阳农业大学,沈阳农业大学 沈阳 110161 ,沈阳 110161 ,沈阳 110161 ,沈阳 110161 ,沈阳 110161 ,沈阳 110161 ,沈阳 110161 |
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| 摘 要： | 本文研究了玉米幼苗在干旱处理下~(32)P的吸收,以及油菜素内酯(BR)和钙浸种对磷素营养的生理效应。结果表明,玉米幼苗根系对磷的吸收和向叶部转移量随干旱强度增大而减少;油菜素内酯和钙有增加根系吸收表面积 提高叶片相对含水量和根中ATP含量、促进磷的吸收和转移及缓解干早的作用
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| 关 键 词： | 玉米 磷的吸收和转移 油菜素内酯 钙 |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 2009-12-31 |
EFFECTS OF DROUGHT ON THE ABSORPTION OF PHOSPHORUS IN MAIZE SEEDLINGS |
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| Abstract: | The absorption and transportation of H232PO4-and the role of Brassin-olide(BR) and Ca2+ in phosphorus nutrition in maize seedlings were studied under drought conditions caused by PEG-Knop nutrient solution of-0.3 anp-1.1 MPa osmotic pressure.The results indicated that the quantities of phosphorus absorbed and transported to leaves in maize sedlings decreased with increase of drought intensity;phosphorus transportation to leaves was more sensitive to drought than absorption by roots BR and Ca2+ had the effects of promoting root growth,increasing the surface area of absorption,relative water content in plants and ATP content in roots,and enhancing absorption and transportation of phosphorus. |
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| Keywords: | maize absorption and transportation of phosphorus Brassin-olide calcium |
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