低夜温后不同光强对榕树叶片PS II功能和光能分配的影响

doi:10.7525/j.issn.1673-5102.2005.02.011

植物研究 ›› 2005, Vol. 25 ›› Issue (2): 159-162.doi: 10.7525/j.issn.1673-5102.2005.02.011

低夜温后不同光强对榕树叶片PS II功能和光能分配的影响

胡文海^1,2, 肖宜安¹, 喻景权², 黄黎锋²

1. 井冈山师范学院生命科学系, 吉安 343009;
2. 浙江大学园艺系, 杭州 310029

收稿日期:2004-09-21 出版日期:2005-06-15 发布日期:2016-06-14
作者简介:胡文海(1973-),男,江西吉安人,讲师,博士生,从事园艺植物生理生态学方面的研究。E-mail:huwenhai@etang.com

Effects of different light intensity after low night temperature stress on PSII functions and absorbed light allocation in leaves of Ficus microcarpa

HUWen-Hai^1,2, XIAO Yi-An¹, YU Jing-Quan², HUANG Li-Feng²

1. Department of Life Science, Jinggangshan Normal College, Ji'an 343009;
2. Department of Horticulture, Zhejiang University, Hangzhou 310029

Received:2004-09-21 Online:2005-06-15 Published:2016-06-14

摘要/Abstract

摘要： 研究了自然低夜温后全光照与遮荫对榕树叶片PS II功能及光能分配的影响。结果表明低夜温后全光照条件下叶片吸收光能分配于光化学反应部分减少,而热耗散部分和反应中心过剩光能则增加,从而导致了PSII功能的下降,遮荫条件下光能分配于光化学反应的程度增加,虽然用于热耗散的比例下降了,但反应中心过剩光能相对较少,从而有利于PSII功能的恢复。

关键词: 榕树, 低夜温不同光强, PSII功能, 光能分配

Abstract: In this study, the effects of full sunlight and shade after natural low night temperature on PSII functions and light allocation in leaves of Ficus microcarpa was examined. Under full sunlight after low night temperature, the allocation of light absorbed by PSII antennae to the photochemical reaction decreased, but the allocation of absorbed light to thermal dissipation and excessive energy increased. So it resulted the decrease of the PSII functions. Though the allocation of absorbed light to thermal dissipation decreased, shade after low night temperature can decrease excessive energy of PSII reaction centers by increase of fraction of light absorbed in PSII antennae that was utilized in PSII photochemistry, and protect the photosynthetic apparatus not to be injured. So shade after low night temperature was beneficial to recover PSII functions.

Key words: Ficus microcarpa, low night temperature stress different light intensity, PSII functions, absorbed light allocation

胡文海, 肖宜安, 喻景权, 黄黎锋. 低夜温后不同光强对榕树叶片PS II功能和光能分配的影响[J]. 植物研究, 2005, 25(2): 159-162.

HUWen-Hai, XIAO Yi-An, YU Jing-Quan, HUANG Li-Feng. Effects of different light intensity after low night temperature stress on PSII functions and absorbed light allocation in leaves of Ficus microcarpa[J]. Bulletin of Botanical Research, 2005, 25(2): 159-162.

低夜温后不同光强对榕树叶片PS II功能和光能分配的影响

Effects of different light intensity after low night temperature stress on PSII functions and absorbed light allocation in leaves of Ficus microcarpa

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