摘要
The selection and application of salt tolerance varieties in peanut is impor- tant for the exploitation of saline soil. In this study, 41 peanut varieties were select- ed for the evaluation of salt tolerance in both germination and young seedling stage. The results showed the germination and growth of peanut were significantly inhibited by salt stress, which were enhanced by salt concentration increasing. The 0.5% NaCI was selected as the most suitable concentration for further identification, and the characters in germination stage （including the relative germination potential, relative germination rate and germination index） and young seedling stage （including relative main root length, seedling height, fresh weight, dry weight, et aL） were measured. Cluster analysis showed the varieties could be divided into different groups, and 9 and 3 salt-tolerant varieties were identified in the two stages, respec- tively, including two varieties performed well in both two stages, which could be useful for the breeding of new salt tolerance varieties and the study of salt toler- ance mechanism.
花生耐盐种质的筛选对于盐碱地的开发有潜在重要意义。选取了41份花生种质,研究其萌发期与苗期的耐盐性。结果表明,花生发芽与生长受盐害抑制,在0.5%盐浓度下,以发芽势、发芽率和发芽指数作为萌发期耐盐指标,以根长、苗高等指标作为苗期耐盐指标,通过聚类分析,在两个时期分别筛选到9个和3个耐盐种质,其中有两个种质在两个时期耐盐能力都比较好,可以作为相关育种与基础研究的材料。
