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紫羊茅新品系抗旱性比较研究
引用本文:陈涛,李健,白史且,张昌兵,鄢家俊,李达旭,游明鸿.紫羊茅新品系抗旱性比较研究[J].草业与畜牧,2011(9).
作者姓名:陈涛  李健  白史且  张昌兵  鄢家俊  李达旭  游明鸿
作者单位:1. 四川省阿坝藏族羌族自治州草原站,四川马尔康,624005
2. 四川省草原科学研究院,四川成都,611731
基金项目:国家牧草产业技术体系建设项目,国家“十二五”科技支撑项目,“十二五”四川省牧草育种攻关项目资助
摘    要:试验以3个紫羊茅新品系(SAGS-05054,SAGS-05055,SAGS-05056)为材料,以国外品种"极地"紫羊茅为对照,从相对含水量、细胞膜透性(RPP)、游离脯氨酸(Pro)、丙二醛(MDA)等方面对紫羊茅品系抗旱性进行系统评价,结果表明:模拟干旱胁迫下,供试材料叶片含水量和叶绿素总含量总体呈递减趋势,相对电导率和丙二醛含量呈递增趋势,游离脯氨酸含量先递增,达峰值后略微下降,各测定生理指标间相关性均达极显著。隶属函数抗旱性分析排序:"SAGS-05056"〉"极地"〉"SAGS-05055"〉"SAGS-05054"。

关 键 词:紫羊茅新品系  抗旱性  比较研究

Comparative Research on Drought Resistance of Festuca rubra L.Strains
Abstract:In this paper,base on the relative water content,chlorophyll content,the relative conductance rate and the malondiadehyde(MDA),The drought resistance were studied for Festuca rubra L.strains("SAGS-05054","SAGS-05055",and "SAGS-05056") and one control-"Polar".The main results showed as fallows:Under drought stress,the relative water content(RWC) and chlorophyll content were in a decreasing trend;the relative conductance rate(RPP) and the malondiadehyde(MDA) presented increase;the dissociated praline(Pro) presented first increasing then descending.The drought coefficients of five physiological parameters were evaluated by subordinate function analysis.The capacity of drought resistance of the four varieties was ordered as follows:"SAGS-05056""polar""SAGS-05055""SAGS-05054".
Keywords:Festuca rubra L  (red fescue)  Strains  Drought resistance
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