安徽农业科学2011，Vol.39Issue(23)：14227-14229,3.
青海湖地区4种荒漠植物抗逆性指标的研究
Study on the Resistance Indexes of Four Kinds of Desert Plants in Qinghai Lake Area
摘要
Abstract
[Objective] The research aimed to study the resistance of four kinds of desert plants in Qinhai Lake area.[ Method ] By contrasting the resistance indexes of four kinds of plants which included Ephedra intermedia, Stellera chamaejasme, Achnatherum splendens and Xan-thopappus subacaulis, the resistance of four kinds of plants in Qinghai Lake area was analyzed. The resistance indexes included the soluble protein , MDA, free Pro content and the activities of SOD, POD, CAT. Moreover, the resistance of four kinds of plants was evaluated comprehensively by using Fuzzy membership function method. [Result] Under the low temperature and drought environment in Qinghai Lake area, SOD activity presented as Stellera chamaejasme > Xanthopappus subacaulis > Ephedra intermedia > Achnatherum splendens, and CAT activity presented as Stellera chamaejasme > Xanthopappus subacaulis > Achnatherum splendens > Ephedra intermedia. Under the same high-salt environment, CAT activity of Stellera chamaejasme was eight times higher than that of Ephedra intermedia. It illustrated that the salt resistance of Stellera chamaejasme was stronger than that of Ephedra intermedia. The free Pro content showed as Xanthopappus subacaulis > Ephedra intermedia > Stellera chamaejasme > Achnatherum splendens. Under the same adverse environment, Pro content of Ephedra intermedia was 2. 83 times of that of Stellera chamaejasme. It was because that MDA content in Stellera chamaejasme was the lowest, and the membranous overoxidation harm was the smallest. It caused that Pro content (stress osmotica material) was low. It also illustrated that the resistance of Stellera chamaejasme was stronger than that of Ephedra intermedia. The comprehensive evaluation of Fuzzy membership function showed that the resistance presented as Xanthopappus subacaulis > Stellera chamaejasme > Ephedra intermedia > Achnatherum splendens. [ Conclusion] The research provided the theory basis for the breeding of drought-resistance new variety and the development of good germ plasm resource in Qinghai Lake area.关键词
青海湖地区/荒漠植物/抗逆性Key words
Qinghai Lake area/ Desert plant/ Resistance分类
资源环境引用本文复制引用
史惠兰..青海湖地区4种荒漠植物抗逆性指标的研究[J].安徽农业科学,2011,39(23):14227-14229,3.基金项目
青海大学中青年科研基金项目(2009-QN-16) （2009-QN-16）
国家科技支撑项目“中国重要生物物种资源监测和保育关键技术与应用示范”(2008 BAC39 B04). （2008 BAC39 B04）
