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

doi:10.3969/j.issn.1009-7791.2022.02.004

Subtropical Plant Science ›› 2022, Vol. 51 ›› Issue (2): 109-117.DOI: 10.3969/j.issn.1009-7791.2022.02.004

• Plant physiology, biochemistry and molecular biology • Previous Articles Next Articles

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

TANG Cong1,2, YANG Jing2, LIU Ping2*, HONG Lan2, GUO Wei2, DING Ming-yan3

(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:2022-04-30 Published:2022-08-03
Contact: LIU Ping

四种鸭跖草科屋顶绿化植物对水分管控的响应

汤聪1,2，杨静2，刘萍2*，洪岚2，郭微2，丁明艳3

(1. 广州建筑园林股份有限公司，广东广州 510030；2. 仲恺农业工程学院，广东广州 510225；3. 顺德职业技术学院，广东佛山 528300)

通讯作者: 刘萍
基金资助:
广州市科技计划项目(201803020013)

Abstract

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.

Key words: green roof, Commelinaceae, watering regime, drought resistance

摘要： 以牛轭草(Murdannia loriformis)、细竹篙草(M. simplex)、假紫万年青(Belosynapsis ciliata)及假紫万年青毛叶变种(B. ciliata var. vilosa)等4种植物为试材，探讨不同屋顶绿化植物在不同水分管理条件下的生长情况以及对干旱胁迫的响应。结果表明，4种植物在浇水周期较短(2 DIW和6 DIW，即每隔2 d和6 d浇一次水)的处理下，其地上部分和根系生物量积累较快，植株根系体量较大，侧根生长较多；而浇水周期较长(10 DIW和15 DIW)的处理减缓植株地上部分及根系生物量的积累；根系形态明显受到控制性浇水管理的影响。非充分浇水管理下(6 DIW和10 DIW)的植株在持续干旱胁迫下表现出较稳定的叶片相对含水量、根系活力和较好的抗旱性，而在频繁浇水管理(2 DIW)和浇水周期较长处理(15 DIW)后，4种植物在持续干旱胁迫下的生理响应都较为剧烈，表现出较差的抗旱能力。因此，在4种鸭跖草科植物建植期间可通过适度浇水(6～10 DIW)，以维持植株较稳定的根系活力和较强的抗旱性。

关键词: 屋顶绿化, 鸭跖草科, 水分管理, 干旱响应

CLC Number:

Q949

TANG Cong, YANG Jing, LIU Ping, HONG Lan, GUO Wei, DING Ming-yan. Effects of Water Control on Drought-resistance of Four Roof Greening Plants of Commelinaceae[J]. Subtropical Plant Science, 2022, 51(2): 109-117.

汤聪，杨静，刘萍，洪岚，郭微，丁明艳. 四种鸭跖草科屋顶绿化植物对水分管控的响应[J]. 亚热带植物科学, 2022, 51(2): 109-117.

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

四种鸭跖草科屋顶绿化植物对水分管控的响应

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