Identification of Drought Tolerance in Peanut (Arachis hypogaea) Germplasm at Seedling Stage  

不同花生种质幼苗期抗旱性鉴定与评价（英文）

作　　者：刘永惠[1] 沈一[1] 陈志德[1] 

机构地区：[1]江苏省农业科学院经济作物研究所,江苏南京210014

出　　处：《Agricultural Science & Technology》2015年第9期1873-1876,共4页农业科学与技术（英文版）

基　　金：Supported by the Agricultural Science Independent Innovation Foundation of Jiangsu Province[CX(12)5089]~~

摘　　要：[Objective] This study was conducted to identify the drought tolerance of peanut（Arachis hypogaea） seedlings. [Method] The plant height, fresh weight and dry weight of 80 peanut varieties or lines were determined under the drought stress simulated using 15% PEG6000 in laboratory. Relative values of the three indices were calculated to measure the drought tolerance of the 80 peanut varieties or lines. [Result] The growth of peanut seedlings was significantly inhibited after 10 d of drought treatment. Cluster analysis revealed that at Euclidean distance D=15, the80 peanut varieties or lines were divided into four categories A, B, C and D. Among them, category B had better drought tolerance while category C was sensitive to drought. In all the four categories, the approved peanut varieties or lines showed better drought tolerance than the unapproved ones. [Conclusion] The drought tolerant and the drought sensitive peanut varieties or lines screened in this study can be used for further basic research and germplasm improvement.[目的]鉴定和评价花生幼苗期的抗旱性。[方法]利用15%PEG6000模拟实验室干旱条件,以相对株高、相对植株鲜重和相对植株干重为指标对80份花生种质资源的抗旱性进行评价。[结果]与清水对照相比,经胁迫处理10 d后植株生长受到了明显抑制。聚类分析表明,在欧氏距离D=15水平上可以细分为A、B、C和D 4个类群,其中B类群抗旱性较强,C类群对干旱敏感。不同类型花生品种抗旱性比较中以审定品种的抗旱性较优。[结论]筛选出的抗旱与干旱敏感种质可用于进一步的基础研究与种质改良。

关 键 词：PEANUT SEEDLING Drought tolerance Cluster analysis 

分 类 号：S565.2[农业科学—作物学]