Plant physiology, biochemistry and molecular biology

Effects of Water Control on Drought-resistance of Four Roof Greening Plants of Commelinaceae

  • 汤 聪,杨 静,刘 萍,洪 岚,郭 微,丁明艳
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  • (1. Guangzhou Landscape Architecture Co. Ltd., Guangzhou 510030, Guangdong China; 2. Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong China; 3. Shunde Polytechnic, Foshan 528300, Guangdong China)

Online published: 2022-08-03

Abstract

Murdannia loriformis, M. simplex, Belosynapsis ciliata and B. ciliata var. vilosa were chose as test materials to discuss and analyse the effects of water regime on the growth and drought-resistance on roof greening plant species in Commelinaceae. The results showed that the 2-day-interval and 6-day-interval watering (DIW) regime produced bigger biomass and root size and more lateral roots than the ones of 10-day and 15-day-intervals. Through a root scanner we could find that root morphology was significantly affected under water regime. The plants under inadequate watering (6 DIW and 10 DIW) maintained more stable relative physiological activities and better drought resistance during the persistent drought period. However, under frequent watering regime (2 DIW) and longer watering regime (15 DIW), the four species under continuous drought stress maintained a poor drought resistance and physiological response. Therefore, appropriate application (6 DIW to 10 DIW) of deficit watering regime may contribute to more stable root dehydrogenase activity and better drought resistance of green roof vegetation of Commelinaceae.

Cite this article

汤 聪,杨 静,刘 萍,洪 岚,郭 微,丁明艳 . Effects of Water Control on Drought-resistance of Four Roof Greening Plants of Commelinaceae[J]. Subtropical Plant Science, 2022 , 51(2) : 109 -117 . DOI: 10.3969/j.issn.1009-7791.2022.02.004

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