大蒜鳞茎浸提液对黄瓜幼苗的化感作用  

Allelopathy of Garlic Bulb Aqueous Extracts on Cucumber Seedling Growth

作　　者：董林林[1] 李振东[1] 王倩[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193

出　　处：《华北农学报》2008年第B10期47-50,共4页Acta Agriculturae Boreali-Sinica

基　　金：国家"十一五"科技支撑攻关项目(2006BAD07B03)

摘　　要：通过生物学试验和盆栽试验,研究大蒜鳞茎浸提液对黄瓜发芽、生长及生理指标的影响。结果表明,随着浸提液浓度的增加,对黄瓜的苗长、根长抑制显著增强,而浓度为40 mg/mL时,对发芽率的抑制显著。在20 mg/mL浓度范围内,大蒜鳞茎浸提液,促进了黄瓜的幼苗生长、增加了可溶性糖、蛋白质、Vc、叶绿素的含量,提高了POD、SOD、CAT的活性,高浓度的浸提液抑制了幼苗生长及POD、SOD、CAT的活性,降低可溶性糖、蛋白质、Vc、叶绿素的含量。随着浓度的增加,MDA的变化趋势为"V"型,浓度为10 mg/mL时,MDA降低了13.7%。20 mg/mL浓度范围内的大蒜浸提液对黄瓜生长有益。Effect of garlic bulb aqueous extracts on cucumber germination,seedling growth and physiological index were studied by bioassay tests and pot planting.The results showed that inhibition of cucumber shoot length and root length were significantly increased with increasing extract concentrations,while inhibition of germination rate was pronounced at 40 mg/mL.Aqueous extracts promoted cucumber seedling growth,increased contents of soluble sugar,protein,Vc and chlorophyll and improved POD,SOD and CAT activities at the range of 20 mg/mL,while high extract concentrations inhibited cucumber seedling growth,POD,SOD and CAT activities and decreased contents of soluble sugar,protein,Vc and chlorophyll.The contents of MDA presented ″V″ with extract concentrations which were decreased to 13.7% at 10 mg/mL.Garlic bulb aqueous extracts were benefit for cucumber seedlings at the range of 20 mg/mL.

关 键 词：黄瓜 化感作用 大蒜 连作障碍 

分 类 号：S633.4[农业科学—蔬菜学]