Effects of Chilling under LowLight on Photosynthesis and ChlorophyllFluorescence Characteristic in Tomato Leaves

ACTA HORTICULTURAE SINICA ›› 2001, Vol. 28 ›› Issue (1): 41-46.

• 研究论文 • Previous Articles Next Articles

Effects of Chilling under LowLight on Photosynthesis and ChlorophyllFluorescence Characteristic in Tomato Leaves

Hu Wenhai and Yu Jingquan

(Department of Horticulture, Zhejiang University, Hangzhou 310029)

Received:1900-01-01 Revised:1900-01-01 Online:2001-02-25 Published:2001-02-25

Abstract

Abstract: Exposure of tomato plants to low temperature (10 ℃ and 5 ℃) under low light (60 μmol·m^-2·s^-1) resulted in an completely inhibition of plant growth and decreased chlorophyll content , net photosynthetic rate (Pn) , stomatal conductance (Gs) and intracellular CO₂ (Ci) concentration except Ci for the lower leaves during chilling at 5 ℃. During the recovery , Pn for 10 ℃treatment arose to a value similar to control , but Pn for 5 ℃treatment did not . Chilling at 10 ℃did not affect Fv/ Fm , but slightly decreasedΦPS Ⅱalthough it recovered soon after chilling stress. However , chilling at 5 ℃ considerably decreased Fv/ Fm and ΦPS Ⅱ, and both recovered slowly after
chilling stress.

Key words: Lycopersicon esculentum Mill ., Chilling, Photosynthesis, Chlorophyll fluorescence

CLC Number:

Hu Wenhai and Yu Jingquan. Effects of Chilling under LowLight on Photosynthesis and ChlorophyllFluorescence Characteristic in Tomato Leaves[J]. ACTA HORTICULTURAE SINICA, 2001, 28(1): 41-46.

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Effects of Chilling under LowLight on Photosynthesis and ChlorophyllFluorescence Characteristic in Tomato Leaves

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