不同光质对黄瓜幼苗抗旱性的影响

doi:10.3969/j.issn.1004-1524.2017.01.09

浙江农业学报 ›› 2017, Vol. 29 ›› Issue (1): 58-63.DOI: 10.3969/j.issn.1004-1524.2017.01.09

不同光质对黄瓜幼苗抗旱性的影响

张晓梅¹, 胡超轶¹, 刘涛¹, 周艳虹^{2, *}

1.浙江大学农业与生物技术学院,浙江杭州 310058;
2.浙江大学农业与生物技术学院蔬菜研究所,浙江杭州 310058

收稿日期:2016-05-30 出版日期:2017-01-15 发布日期:2017-02-23
通讯作者: 周艳虹,E-mail:yanhongzhou@zju.edu.cn
作者简介:张晓梅(1994—),女,浙江平湖人,本科生,专业为设施园艺栽培技术与生理。E-mail:3130100235@zju.edu.cn
基金资助:
公益性行业(农业)科研专项(201203004)

Effects of light quality on drought resistance of cucumber seedlings

ZHANG Xiaomei¹, HU Chaoyi¹, LIU Tao¹, ZHOU Yanhong^{2, *}

1. College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China;;
2. Institute of Vegetable Science, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058,China;

Received:2016-05-30 Online:2017-01-15 Published:2017-02-23

摘要/Abstract

摘要： 利用LED光源,研究了白光、蓝光、红光和红蓝(1:1)组合光对干旱逆境下黄瓜(Cucumis sativus L.)植株净光合速率、蒸腾速率、气孔开度、活性氧累积、抗氧化酶活性等的影响。结果表明,与白光处理相比,红光可以降低植株气孔开度、蒸腾速率和失水率,并能增加抗氧化酶SOD、CAT和G-PDO活性,降低活性氧的累积,但红光不利于正常浇水条件下黄瓜植株的光合作用;蓝光则促进气孔开放和蒸腾速率,不利于植株保水。因此,在设施生产中适当补给红光有利于黄瓜幼苗抗旱性的提高。

关键词: 光质, LED, 干旱胁迫, 黄瓜, 抗旱性

Abstract: To study the effects of light quality on drought resistance of plant, cucumber seedlings were exposed to white light, blue light, red light or red-blue (1:1) light from light-emitting photodiodes (LED) under well watered conditions or drought conditions and the net photosynthetic rate (Pn), transpiration rate (Tr), stomatal aperture, reactive oxygen species (ROS) and antioxidant enzyme activity in leaves were investigated. The results showed that plants grown with red light had improved drought tolerance, together with decreased leaf stomatal aperture, transpiration rate, water loss and ROS accumulation, and higher activities of SOD, CAT and G-POD. However, red light decreased Pn in well watered plants. Blue light promoted stomatal aperture and Tr. Our study suggests that exposure to red light appropriately could be a potential approach to improve drought tolerance in cucumber seedlings which is particularly feasible for greenhouse production.

Key words: light quality, LED, drought stress, cucumber, drought resistance

中图分类号:

S642.2

张晓梅, 胡超轶, 刘涛, 周艳虹. 不同光质对黄瓜幼苗抗旱性的影响[J]. 浙江农业学报, 2017, 29(1): 58-63.

ZHANG Xiaomei, HU Chaoyi, LIU Tao, ZHOU Yanhong. Effects of light quality on drought resistance of cucumber seedlings[J]. , 2017, 29(1): 58-63.

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不同光质对黄瓜幼苗抗旱性的影响

Effects of light quality on drought resistance of cucumber seedlings

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