关键词: 芦荟, 磷, 海水胁迫, 生长, 缓解效应

Abstract: Effects of different P levels on dry matter accumulation, leaf elongation rate, chlorophyll content, root vigor, K+, Na+, Ca2+, Mg2+, Cl- contents of aloe seedings under 30% concentration of seawater were studied. The results showed that addition of P increased significantly plant dry weight, promoted markedly leaf elongation rate, chlorophyll contents and root vigor, decreased the electrolytic leakage of leaves. Addition of P also decreased significantly Na+, Cl- contents, promoted K+, Ca2+ transport to shoot, maintained high K+/ Na+ ,Ca2+/ Na+ and SK,Na in aloe leaves, improved ion homeostasis in leaves, this was one of the main causes of the alleviatory effects of P on growth inhibition of seawater-stressed aloe seedlings.

Key words: Aloe, P, Seawater stress, Growth, Alleviation