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Effects of Light Quality on Growth and Photosynthetic Characteristics of Watermelon Seedlings |
CHEN Yi-qun,WANG Ting-ting,MA Jian,YANG Yu-kai,ZHAN Zhuo*,LI Yang* |
Institute of Photobiological Industry,Sino-Science Photobiotech Co.,Ltd.,Xiamen 361008,Fujian,China |
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Abstract Taking watermelon(Citrullus lanatus L.) variety ‘Qingfeng’ as experimental material,this
paper studied the effect of light quality on watermelon seedling growth and photosynthetic characteristics under
conditions of artificial-light plant factory,and investigated high efficient artificial-light quality environment
for improving seedling quality and shortening nursing seedling period.The results showed that comparing with
the traditional light source fluorescent lamp(CK),the light quality 5R/4B/1Y (red light 150 μmol·m-2·s-1,
blue light 120 μmol·m-2·s-1,yellow light 30 μmol·m-2·s-1) had better advantage for nursing seedling.Under
5R/4B/1Y treatment the watermelon seedling was stumpish with thick stem.The chlorophyll content,net
photosynthetic rate and the strong seedling index were significantly higher than that of the CK.So,5R/4B/1Y
can be recommended as a better light quality recipe for artificial-light nursing seedling of watermelon.
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Received: 20 August 2018
Published: 25 February 2019
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