Evaluation on Resistance of Four Varieties of Xizang Wild Elymus nutans Griseb.at Seed Germination Period
In order to evaluate the seed germination characteristics of Xizang wild Elymus nutans Griseb.seeds under drought and salt stress,four kinds of wild Elymus nutans Griseb.seeds were used as test materials,PEG-6000 simulated drought stress and NaCl simulated salt stress were used for seed germination tests,and the germination indexes were analyzed by principal component analysis.The results showed that among the comprehensive evaluation indexes of drought resistance,fresh quality and germination potential could be used as the main indexes of drought resistance during ger-mination.The seeds of Anduo County and Yangbajing were highly drought-resistant varieties.In salt tolerance identification,root length and germination rate could be used as the main indexes of salt tolerance during germination.Yangbajing and Anduo County Elymus nutans Griseb.seeds were high salt tolerant varieties.In this study,the stress resistance of four kinds of wild Xizang Elymus nutans Griseb.seeds was evaluated comprehensively,and the drought resistance and salt tolerance of wild Xizang Elymus nutans Griseb.seeds were selected and their identification indexes were selected.
万方数据
维普
