Effects of Daytime Sub-high Temperature on Photosynthesis and ChloroplastUltrastructure of Tomato Leaves in Greenhouse

ACTA HORTICULTURAE SINICA ›› 2005, Vol. 32 ›› Issue (4): 614-619.

• 研究论文 • Previous Articles Next Articles

Effects of Daytime Sub-high Temperature on Photosynthesis and ChloroplastUltrastructure of Tomato Leaves in Greenhouse

Zhang Jie;Li Tianlai

(Shenyang Agricultural University, Horticulture Department, Key Laboratory of Protected Horticulture of Liaoning Province, Shenyang 110161, China)

Received:2004-11-17 Revised:2005-06-08 Online:2005-08-25 Published:2005-08-25

Abstract

Abstract: Tomato plants were dealed with 35℃ sub-high temperature in greenhouse from the first bud of tomato effloresced to 30 days after florescence. The results showed that under the condition of sub2high temperature, the net photosynthetic rate, stomatal limitation of photosynthesis and the content of chlorophyll of tomato leaves decreased. Ultrastructure of chlorop last was changed. The numbers of stoma increased obviously, and the opening degree of stoma was much larger than the control at 25℃. The envelope of chloroplast was partially injured, the number of grana decreased, and the thylakoids of grana was loose. The number of oil body increased while the starch grain decreased first then increased. Effects of 35℃ sub-high temperature on the photosynthesis of tomato leaveswere independent of stoma factors.

Key words: Tomato, Sub-high temperature, Photosynthesis, Ultrastructure

CLC Number:

S 641.2

Zhang Jie;Li Tianlai. Effects of Daytime Sub-high Temperature on Photosynthesis and ChloroplastUltrastructure of Tomato Leaves in Greenhouse[J]. ACTA HORTICULTURAE SINICA, 2005, 32(4): 614-619.

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Effects of Daytime Sub-high Temperature on Photosynthesis and ChloroplastUltrastructure of Tomato Leaves in Greenhouse

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