热带亚热带植物学报Issue(5)：459-465,7.DOI:10.3969/j.issn.1005-3395.2013.05.013
三种水库消落带草本植物对完全水淹的适应机制研究
Adaptation Mechanism of Three Herbs in the Water-level-fluctuation-zone of Reservoir to Complete Submergence
摘要
Abstract
In order to understand the adaptive mechanism of three plant species, including Phalaris arundinacea, Hemarthria altissima and Cynodon dactylon, in the water-level-lfuctuation-zone (WLFZ), dynamic changes in ecological and physiological indicators, such as branch, leaf, biomass, soluble sugar, starch and root vigor, were studied. The results showed that P. arundinacea, H. altissima and C. dactylon did not generate new branch, and reduced total leaf number, total leaves length and biomass for adapt to submergence environment. P. arundinacea and C. dactylon adapted to complete submergence by slow growth, while H. altissima accelerated growth at ifrst and then inhibited growth to preserve vitality. P. arundinacea, H. altissima and C. dactylon consumed little carbohydrate, reduced root vigor to adapt complete submergence. The tolerance of prolonged submergence of the three herbs is as the following:C. dactylon>P. arundinacea>H. altissima.关键词
水库消落带/虉草/牛鞭草/狗牙根/完全水淹/适应Key words
Reservoir water-level-lfuctuation-zone/Phalaris arundinacea/Hemarthria altissima/Cynodon dactylon/Complete submergence/Adaptation引用本文复制引用
李秋华,刘送平,支崇远,李小峰,陈峰峰,曾庆凯..三种水库消落带草本植物对完全水淹的适应机制研究[J].热带亚热带植物学报,2013,(5):459-465,7.基金项目
贵阳市重大科技专项([2010]5-03) （[2010]5-03）
贵州省科技计划项目(黔科合区域合[2013]7005号) （黔科合区域合[2013]7005号）
贵阳市科技计划项目(筑科合同[2012]5号)资助 （筑科合同[2012]5号）
