| 甘蔗叶片气体交换及对光的响应和水势的日变化 |
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| 引用本文： | 杨丽涛,陈超君,李杨瑞,苏永植,谢毅栋,张世宇,李建存.甘蔗叶片气体交换及对光的响应和水势的日变化[J].亚热带农业研究,2002,9(2):1-7. |
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| 作者姓名： | 杨丽涛 陈超君 李杨瑞 苏永植 谢毅栋 张世宇 李建存 |
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| 作者单位： | 1. 广西大学农学院,南宁,530005
2. 广西农业科学院,南宁,530007 |
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| 摘 要： | 在田间正常生长的条件下 ,两个甘蔗品种 GT11和新台糖 2 0气体交换的日变化表现为明显的单峰曲线 ,与 PAR的变化趋势一致 ,强光有利于气体交换。在强光下 ,A受到 Ci的限制。甘蔗叶片 Ψw 的日变化在清晨和傍晚达最高值。与新台糖 2 0相比 ,GT11具有较高的同化效率和气体交换率 ,这与其叶片较高的Ψw 有关 ,而与叶绿素含量无关
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| 关 键 词： | 甘蔗 气体交换 水势 叶绿素 |
| 文章编号： | 1005-927X(2002)02-0001-07 |
| 修稿时间： | 2001年11月22 |
Diurnal variation in gas exchange, water potential and light response curve in two sugarcane varieties |
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| YANG Li tao ,CHEN Chao jun ,LI Yang rui ,SU Yong zhi ,XIE Yi dong ,ZHANG Shi yu ,LI Jian cun.Diurnal variation in gas exchange, water potential and light response curve in two sugarcane varieties[J].Subtropical Agriculture Research,2002,9(2):1-7. |
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| Authors: | YANG Li tao CHEN Chao jun LI Yang rui SU Yong zhi XIE Yi dong ZHANG Shi yu LI Jian cun |
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| Institution: | YANG Li tao 1,CHEN Chao jun 1,LI Yang rui 2,SU Yong zhi 1,XIE Yi dong 1,ZHANG Shi yu 1,LI Jian cun 1 |
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| Abstract: | Diurnal time courses of gas exchange in two sugarcane varieties GT 11 and ROC 20 showed one peak under the normal field growing conditions which followed a pattern similar to that of PAR . The rates of gas exchange increased with increasing PAR . Under high light, A was limited by Ci . Diurnal peaks of Ψ w in sugarcane leaves occurred in early morning and late afternoon. Compared with ROC 20, GT 11 showed higher quantum yield of assimilation and gas exchange which might relate to its high Ψ w but not to chlorophyll contents. |
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| Keywords: | sugarcane gas exchange water potential chlorophyll |
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