镉胁迫对3种蔬菜种子萌发及幼苗生长的影响
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摘 要:通过培养皿滤纸萌发试验,研究不同浓度镉胁迫(0、12.5、25、50、100、200mg/L)对3种蔬菜(小白菜、油麦菜和雪里蕻)种子萌发和幼苗生长的影响。结果表明,雪里蕻和油麦菜的发芽率、发芽势在镉离子浓度12.5mg/L时呈不同程度的促进效应,在200mg/L时表现为明显的抑制效应,小白菜的发芽势、发芽率在各浓度组间无显著差异;油麦菜的发芽指数最高;活力指数变化依次为雪里蕻
关键词:镉;蔬菜;种子萌发;幼苗生长
中图分类号 S636.9 文献标识码 A 文章编号 1007-7731(2022)06-0107-04
Effects of Cadmium(Cd)on Seed Germination and Seedling Growth of Three Species of Vegetables
WANG Yue HOU Yanan WANG Saisai WANG Zhen WU Di DONG Lili
(College of Life and Environmental Sciences, Huangshan University, Huangshan 245041, China)
Abstract: The effects of Cd2+ with different concentrations(0, 12.5, 25, 50, 100, 200mg/L)on the germination and seedling growth of three vegetable seeds(Brassica juncea var.muLticeps, Lactuca sativa var longifoliaf. Lam and Brassica chinensis L.)were studied by Petri dish filter paper germination experiment.The results showed that 12.5mg/L Cd2+ could promote the germination rate and germination potential of B. juncea and L. sativa but 200mg/L Cd2+ showed obvious inhibitory effects.There was no significant difference in germination potential and germination rate of B.chinensis between different concentration groups.The germination index of L. sativa was the highest.The change of vitality index was B. juncea
Key words: Cd2+; Vegetables; Seed germination; Seedling growth
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