茶树不同叶位叶片功能性状与光合特性研究

Abstract

Abstract: Taking 5 breeding lines tea as test material, the leaf functional and photosynthetic characteristics of the leaves at different positions were monitored, and correlations between the leaf functional and photosynthetic characteristic analyzed. The leaf functional characteristic included leaf area (LA), the leaf index(LI), specific leaf area (SLA), leaf dry matter content(LDMC), Chla, Chlb, Chl and Car, the photosynthetic indexes included net photosynthetic rate(P_n), stomatal conductance(G_s), intercellular CO₂ concentration(C_i) and transpiration rate(T_r). The results showed that the LA, LMDC, P_n, G_sand T_r firstly increased and then decreased with the leaf position went up, whose maximum value emerged at the middle leaves(from 3rd to 4th). The 1 and 6 leaf measurements were substantially below other leaf position (P<0.05). The LI and SLA increased with the elevation of the leaf position, the maximum values of SLA was at 6th leaf (P<0.05). The Chla, Chlb and Chl of different position leaves (from 1st to 4th)

Key words: tea plant, different leaves positions, leaf functional, leaf photosynthetic

CLC Number:

WANG Feng, CHEN Yuzhen, WANG Xiuping, YOU Zhiming, CHEN Changsong. Leaf Functional and Photosynthetic Characteristics in Different Leaves Positions of Tea Plant[J]. Journal of Tea Science, 2016, 36(1): 77-84.

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Leaf Functional and Photosynthetic Characteristics in Different Leaves Positions of Tea Plant

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