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| 不同生长期木薯品种气体交换特性的研究 | |
| 引用本文： | 吴炫柯,李永健,李杨瑞. 不同生长期木薯品种气体交换特性的研究[J]. 西南农业学报, 2006, 19(3): 456-459 |
| 作者姓名： | 吴炫柯 李永健 李杨瑞 |
| 作者单位： | 1. 柳州市农业气象试验站,广西,柳州,545003;广西大学农学院,广西,南宁,530005 2. 广西大学农学院,广西,南宁,530005 3. 广西农业科学院,广西,南宁,530007 |
| 摘 要： | 在大田条件下,研究了不同木薯品种的气体交换特性,探讨不同生长期各个木薯品种气孔导度、胞间二氧化碳浓度、净光合速率、蒸腾速率之间的相互关系及叶绿素含量对净光合速率的影响。结果表明,不同生长期各个木薯品种气孔导度、胞间二氧化碳浓度、净光合速率及蒸腾速率之间均呈极显著的正相关关系;在木薯的生长前期非气孔限制是光合速率变化的原因,在后期则主要是由气孔限制引起的。 |
| 关 键 词： | 木薯 品种 气体交换特性 气孔限制 |
| 文章编号： | 1001-4829（2006）03-0456-04 |
| 收稿时间： | 2006-04-16 |
| 修稿时间： | 2006-04-16 |
Studies on the gas exchange characteristics of different cassava varieties |
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| WU Xuan-ke,LI Yong-jian,LI Yang-rui. Studies on the gas exchange characteristics of different cassava varieties[J]. Southwest China Journal of Agricultural Sciences, 2006, 19(3): 456-459 | |
| Authors: | WU Xuan-ke LI Yong-jian LI Yang-rui |
| Affiliation: | 1. Agrometeorological Experiment Station of Liuzhou, Guangxi Liuzhou 545003, China; 2. Agricultural College, Guangxi University Guangxi Narming 530005, China; 3 .Guangxi Academy of Agricultral Sciences, Guangxi Nanning 530007, China |
| Abstract: | Under field conditions,the gas exchange characteristics of different cassava varieties were studied.The correlations between the net photosynthesis rate and the stomata conductance,intercellular CO_2 concentration,transpiration rate and net photosynthetic rate and the effects of chlorophyll content were studied.The results showed that the correlation among stomata conductance,intercellular CO_2 concentration,transpiration rate and the net photosynthesis rate was highly significantly positive;the main causes for the net photosynthesis rate decline were nonstomatal limitation at earlier growth duration and stomatal limitation at later growth duration. |
| Keywords: | cassava variety gas exchange characteristics stomatal limitation |
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