关键词: 金牌美达丽, 猎狗, 盐胁迫, 种子萌发, 盐渍化

Abstract: Two kinds of turf grasses, Lolium perenne L. and Festuca elata Keng., were treated with different concentration of NaCl, KCl, MgSO₄ and the mixture of the three salts above for 15 days. Their relative germination percentage, growth status of their roots and leaves and ecological limit analysis were determined. The results showed that stronger adaptation of Lolium perenne L. and Festuca elata Keng. to the saline environment were approved. Lower concentrations of NaCl, KCl, MgSO₄ and their mixture promote seed germination of Festuca elata Keng.. However germination percentage decreased prominently with increasing of NaCl, KCl and the mixture concentration, different salts affected the seed germination percentage unsignificantiy. Higher concentration of the salts delayed the seed primary germination time and inhibited the seedling normal growth. MgSO₄ had no prominent inhabitation to the germination percentage of Lolium perenne L. and Festuca elata Keng., but roots growth of Lolium perenne L. was inhibited significantly.

Key words: Lolium perenne L., Festuca elata Keng., salt stress, seed germination, salinification