Effect of Calcium on Photosynthesis Response to Sub-high Temperature of Tomato Seedlings

摘要：

The effect of calcium on photosynthesis of tomato seedlings under 35 °C sub-high temperature was researched by treating with CaCl2, Ca2 chelator EGTA, and Ca2 channel inhibitor LaCl3 on tomato seedling. The results showed that: Except intercellular CO2 contain (Ci), net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Cs) and stomatal limitation (Ls) were all increased in varying degrees in the early treatment, but significantly decreased after 9 days treatment. Compared with treatment CK, calcium increased Pn of seedlings leaves all the time, so did the Cs, Ci and Tr, but Ls decreased. So calcium maybe not just play an important role in regulating structural stabilization of stomata, it also effect the carbon assimilation in leaves under 35 °C sub-high temperature.

关键词： calcium tomato sub-high temperature photosynthesis

作者: Mingfang Qi Tao Xi Tianlai Li

作者单位: Shenyang Agriculture University Shenyang, China

会议类型: 国际会议

会议名称: The 2nd Conference on Key Technology of Horticulture(第二届园艺关键技术学术会议 CKTH 2010)

会议地点: 北京

会议语种:英文

页码: 187-189

在线出版日期: 2010-07-17（万方平台首次上网日期，不代表论文的发表时间）