北疆棉花品种抗旱性初步评价及鉴定方法研究  

Study on Primary Evaluation and Identification of Drought Resistance of Cotton Cultivars in the North Xinjiang

作　　者：李志博[1] 杨敏[2] 张荣华[1] 

机构地区：[1]新疆兵团绿洲生态农业重点实验室,新疆石河子832003 [2]北京德农种业有限公司甘肃办事处,甘肃武威733000

出　　处：《新疆农业科学》2006年第6期463-466,共4页Xinjiang Agricultural Sciences

基　　金：石河子大学高层次人才引进资金专项(RCZX-YS02)

摘　　要：以0、10%、20%和30%聚乙二醇(PEG6000)溶液浸泡棉花叶片模拟干旱胁迫,测定棉花叶片的PSⅡ的原初光能转化学效率(Fv/Fm),用胁迫敏感指数(SI)法和模糊隶属法对北疆9个棉花品种的抗旱性及鉴定方法作了初步评价和研究。结果表明,随着胁迫强度的增加,Fv/Fm的I值变异幅度增大,品种对干旱胁迫的反应敏感性变化明显。胁迫敏感指数(SI)法和模糊隶属法对棉花抗旱性评价的结果基本一致。新陆早12号和新陆早6号的抗旱性较强,18-3和201的抗旱性较弱。After saturating cotton leaves with 0 （CK）, 10 %, 20 %, 30 % PEG to imitate drought stress and investigating theirs＇ conversation efficiency of primary light energy of PS Ⅱ （ Fv/Fm ）, drought resistance and its identification methods of cotton cultivars were primarily evaluated and studied in the North Xinjiang by stress sensitization index method and fuzzy subordination method. It was found that the range variations of SI value enlarged and cotton sensitivity to drought stress changed more significandy with the increase of PEG concentration. Results evaluation on drought resistance of cotton cultivars between stress sensitization index method and fuzzy subordination method were mostly identical. Drought resistance of Xinluzao 6 and Xinluzao 12 was stronger, and that of 18 - 3 and 201 was weaker.

关 键 词：棉花 抗旱性 胁迫敏感指数法 模糊隶属法 

分 类 号：S562.034[农业科学—作物学]