关键词: 水杨酸, 干旱胁迫, 黄瓜, 膜脂过氧化, 水分利用效率, 叶绿素荧光

Abstract: The increment pattern of aboveground biomass of Chinese Aeluropus(Aeluropus littoralis var. sinensis)population in its growing season conforms to the Logistic model,with a peak value of 374g穖^-2 appeared in mid-Sept.The maximum growth rate(5.5g穖^-2穌ay^-1appears at flowering stage(mid-June),and thereafter,it reduces rapidly.The leaf-stem ratio(L/S)of the population is under constant reduction during its growing season,ranging from 0.7 at the beginning to 0.2 at the end. Its leaf area index (LAJ) increases constantly before flowering, reaches the maximum(1,2) at flowering stage and decreases gradually thereafter.

Key words: salicylic acid, drought stress, Cucumis sativus, membrane lipid peroxidation, water use efficiency, chlorophyll fluorescence