Shangguan Zhouping,Liu Wenzhao,Xu Xuanbin.Response of CO2/H2O Exchange Parameters of Wheat Leaves to Different Water Supply Condition[J].Research of Soil and Water Conservation,1999,6(01):107-111.
小麦叶片CO2/H2O交换参数对不同供水条件的响应
- Title:
- Response of CO2/H2O Exchange Parameters of Wheat Leaves to Different Water Supply Condition
- Keywords:
- wheat; photosynthesis; soil water status
- 摘要:
- 在大田不同供水条件下,于小麦孕穗期和灌浆期对小麦叶片气体交换参数的日变化进行了连续测定.结果表明,小麦叶片光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)以及叶肉细胞间隙CO2浓度(Ci)均有较明显的日变化.不同供水条件下,Pn的日变化趋势不同,充分供水时为典型的双峰曲线,中午有明显的“午休”现象;当非充分供水时,Pn午休现象明显,且持续时间长,第二高峰表现不明显.供水条
- Abstract:
- Daily change of gas exchange parameter of wheat leaves was measured under different water conditions,the result have showed that,the photosynthetic rate,stomatal conductance,transpiration rate,and intercelluar CO2 concentration are obvious change in daily.The trend of this change was differ from different water supply and it was influenced by many environment factors,such as soil water status,light,air temperature,and air humidity et al.,but mainly determinated by stomatal conductance and photosynthetic characteristic of chloroplast.
参考文献/References:
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[2] 郑国生.不同天气条件下田间大豆光合作用日变化的研究.见:邹琦主编.作物抗旱生理生态研究,济南:山东科技出版社,1994,188～194
[3] 邹琦.作物光合作用午休研究进展.作物抗旱生理生态研究,1994(12):164～171
[4] 卢从明等.水分胁迫对小麦叶片色素复合蛋白复合体的影响.植物学报,1995(37):950～955
[5] Boyer,J.E.and Potter,I.R
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备注/Memo
收稿日期:1999-1-10。
基金项目:国家自然科学基金