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[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。
[Objective] The research aimed to identify and evaluate the drought resistance of peanut seedling. [Method] The drought resistance of 15 peanut germplasm resources was evaluated by 15% PEG6000 simulated laboratory drought conditions, relative plant height, relative fresh weight of plant and relative dry weight of plant as indexes. [Result] Compared with fresh water control, the plant growth was obviously inhibited after 10 d of stress treatment. Cluster analysis showed that there are four subgroups of A, B, C and D at the Euclidean distance D = 15. Among them, the B group is more drought resistant and the C group is sensitive to drought. The drought resistance of different types of peanut varieties was better than that of the certified varieties. [Conclusion] The selected drought-resistant and drought sensitive germplasm could be used for further basic research and germplasm improvement.