45份偃麦草种质苗期耐盐性综合评价  

Comprehensive Evaluation of Salt Tolerance of 45 Elytrigia repens during Seedling Stage

作　　者：王瑞 李培英[1,2,3] 孙宗玖 乔炜[1] WANG Rui;LI Pei-ying;SUN Zong-jiu;QIAO Wei(College of Pratacultural and Environmental Sciences,Xinjiang Agricultural University,Urumqi 830052,China;Key Laboratory of West Arid Region Grassland Resources and Ecology,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Key Laboratory of Soil and Plant Ecological Processes,Xinjiang Agricultural University,Urumqi 830052,China)

机构地区：[1]新疆农业大学草业与环境科学学院,乌鲁木齐830052 [2]西部干旱荒漠区草地资源与生态重点实验室,乌鲁木齐830052 [3]新疆草地资源与生态重点实验室,乌鲁木齐830052

出　　处：《新疆农业大学学报》2019年第6期400-411,共12页Journal of Xinjiang Agricultural University

基　　金：国家自然科学基金项目(31360580)。

摘　　要：采用土培法,对苗期45份偃麦草(Elytrigia repens)种质进行递进式NaCl胁迫,在150 mmol/L及300 mmol/L NaCl盐胁迫下对其枯黄率、地上生物量、叶片K^+含量、叶片Na^+含量及叶片K^+/Na^+进行综合评价。结果表明,随着盐胁迫的增加,偃麦草的枯黄率、Na^+含量均呈上升趋势,而地上生物量、K^+含量、K^+/Na^+呈下降趋势。隶属函数综合评价及聚类分析表明,材料E48为耐盐性种质,材料E25、E26、E19、E28、E04、E23、E03、E08为不耐盐种质,其余耐盐性居中。With 45 genetypes of Elytrigia repens as test materials,progressive NaCl stress on materials was carried out during the seedling stage with soil culture method. Under 150 mmol/L and 300 mmol/L NaCl salt stress,the withered rate,aboveground biomass,leaf K^+ content,leaf Na^+ content and leaf K^+/Na^+ were comprehensively evaluated. The result showed that with the increase of salt stress,the withered rate and Na^+ content of Elytrigia repens increased,while the aboveground biomass,K^+content,and K^+/Na^+ decreased;Comprehensive evaluation of membership function combined with cluster analysis showed that material E48 was salt-tolerant germplasm,materials E25,E26,E19,E28,E04,E23,E03 and E08 were germplasms that were not tolerant to salt,and the rest were salt-tolerant.

关 键 词：偃麦草 耐盐性 苗期 隶属函数法 K^+/Na^+ 

分 类 号：S512.1[农业科学—作物学]