Effects of light quality on drought resistance of cucumber seedlings

doi:10.3969/j.issn.1004-1524.2017.01.09

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

• Horticultural Science • Previous Articles Next Articles

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

Abstract

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

CLC Number:

S642.2

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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Effects of light quality on drought resistance of cucumber seedlings

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