[CO2]和温度增加的相互作用对植物生长的影响

ＣＯ2 和温度是影响植物生长、发育和功能的两个关键因子 .在过去一个世纪中 ,ＣＯ2 ]从 2 80 μｍｏｌ/ｍｏｌ增加到 36 0μｍｏｌ/ｍｏｌ且每年增长速率为 1～ 5 μｍｏｌ/ｍｏｌ,到 2 0世纪末达到更高的浓度1] .最近的模型预测表明 ,到 2 10 0年 ,全球表面温度可能会增加 1～ 4 .5℃ 2 \〗.ＣＯ2 是光合作用的底物 ,而且还是初级代谢过程 (气孔反应和光合作用 )、光合同化物分配和生长的调节者 .温度几乎影响植物所有的生物学过程 .因此 ,在全球气候变化要素中 ,大气 ＣＯ2 ]和温度升高对植物的生理过程和生物量及产量具有极为重要的…

EFFECTS OF INTERACTIONS BETWEEN ELEVATED [ CO2 ] AND INCREASED TEMPERATURE ON GROWTH OF PLANTS

The global environment is changing with increasing temperature and atmospheric carbon dioxide concentration. Because the two factors are concomitant and the rise of global carbon dioxide concentration will affect all biomass across the full global range of temperatures, we review the theory regarding and observations on the effects of temperature and carbon dioxide concentration interactions onplant carbon balance, growth, development, biomass accumulation and yield. Although there are sound theoretical reasons for expecting a large stimulation of net CO 2 assimilation rates by increased \CO 2 \] at higher temperatures, this does not necessarily mean that the pattern of biomass and yield responses to increasing \CO 2 \] and temperature are determined by this response. This paper reviews the interactions between the effects of \CO 2 \] and different temperatures on plants. There is little unequivocal evidence for large differences in response to \CO 2 \] at different temperatures, as studies are confounded by the different responses of the species adapted and acclimated to different temperatures, and the interspecific difference in growth form and development pattern. It is coueluded that stress we should the importance of initiation and expansion of meristems and organs and the balance between assimilate supply and sink activity in determining the growth response to increasing \CO 2 \] and temperature. Tab 1 , Ref 62