39份无芒雀麦种质材料苗期抗旱性综合评价  

Comprehensive evaluation of drought resistance of 39 Bromus inermis germplasms at the seedling stage

作　　者：毛培春[1] 孟林[1] 高洪文[2] 张国芳[1] 

机构地区：[1]北京市农林科学院北京草业与环境研究发展中心,北京100097 [2]中国农业科学院北京畜牧兽医研究所,北京100090

出　　处：《草业科学》2010年第11期82-88,共7页Pratacultural Science

基　　金：国际科技合作与交流专项(2008DFR30200);"十一五"国家重点科技支撑项目(2008BADB3B01);北京市科技计划项目(Z09090501040902);农业部牧草种质资源保护项目;北京市农林科学院常规育种财政专项

摘　　要：在温室条件下,采用反复干旱法,通过对国外引进的39份无芒雀麦(Bromus inermis)种质材料苗期的存活率、株高、绿叶数、地上生物量、地下生物量、根冠比等指标的测定,进行苗期抗旱性的综合评价。结果表明,39份材料按照抗旱性能强弱划分为3个级别,抗旱性强的有16个材料,抗旱性中等的有16个材料,抗旱性弱的有7个材料,并用标准差系数赋予权重法求得综合评价D值,将各材料抗旱性能进行排序,其中ZXY05P-0854苗期抗旱性最强,ZXY05P-1135最弱。In the greenhouse,A trial was conducted to comprehensively evaluate the drought resistance of 39 Bromus inermis germplasms introduced from abroad at the seedling stage by measuring the average survival rate,plant height,number of green leaves,aboveground biomass,underground biomass,root/shoot ratio.The results of this study showed that 39 B.inermis germplasms were classified into three groups with the different drought resistance,in which 16 germplasms were stronger and medium drought resistance,respectively,and 7 germplasms were weaker drought resistance.The membership function method was used to calculate the weight value of average survival rate,plant height,number of green leaves,aboveground biomass,underground biomass,and root/shoot ratio for each B.inermis germplasm,and then calculated the comprehensive evaluation value（D）.The comprehensive evaluation value（D） suggested that ZXY05P-0854 was the strongest drought resistant germplsm at seeding stage and ZXY05P-1135 was the weakest at seeding stage.

关 键 词：无芒雀麦 苗期 抗旱性 综合评价 

分 类 号：S543.803.4[农业科学—作物学] Q945.7[生物学—植物学]