Effect of Environmental Factors on Unsteady-state Photosynthesis in Greenhouse Aubergine

ACTA HORTICULTURAE SINICA ›› 2005, Vol. 32 ›› Issue (4): 624-627.

• 研究论文 • Previous Articles Next Articles

Effect of Environmental Factors on Unsteady-state Photosynthesis in Greenhouse Aubergine

Gao Zhikui1;Gao Rongfu2;He Junping1;Wang Mei1

(¹College of Horticulture, Hebei Agriculture University, Baoding 071001, China; ²Beijing Forestry University, Beijing 100083, China)

Received:2005-01-14 Revised:2005-03-18 Online:2005-08-25 Published:2005-08-25

Abstract

Abstract: Transient photosynthesis was measured by C IRAS-2 of PP SystemsLtd. at automatic recording with an interval of 2 s, and unsteady-state photosynthesis was found in greenhouse aubergine. By combining the transient measurement at the step treatment on photosynthetic available radiation ( PAR) and ambient
CO₂ concentration Ca in greenhouse with regression and correlation analysis of transient photosynthesis course, it was found that effects of intercellular CO₂ concentration Ci and Ca on unsteady-state photosynthesis were the
strongest, followingswere stomatal conductance Gs, transp iration rate E and PAR, and T₁ and RH the least. At the same time, there was significant negative correlation at the P_0.01 or P_0.05 level between Ci and net photosynthetic rate Pn, but no correlation between Gs and Pn.

Key words: Greenhouse, Aubergine, Transient photosynthesis, Unsteady-state

CLC Number:

S 641.1

Gao Zhikui;Gao Rongfu;He Junping;Wang Mei. Effect of Environmental Factors on Unsteady-state Photosynthesis in Greenhouse Aubergine[J]. ACTA HORTICULTURAE SINICA, 2005, 32(4): 624-627.

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Effect of Environmental Factors on Unsteady-state Photosynthesis in Greenhouse Aubergine

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