摘要
以番茄为试材,设置5个梯度(0、100、150、200、250μmol/L)苯甲酸浓度胁迫处理番茄种子,并外源添加不同浓度硝普钠(SNP)、蔗糖、维生素C,以探讨苯甲酸对番茄种子发芽的化感及消除化感的效应。结果表明:随着苯甲酸浓度的增大,番茄种子的发芽势、发芽率、发芽指数、活力指数、化感效应指数均呈降低趋势,说明苯甲酸对番茄种子发芽具有抑制作用;外源添加50μmol/L硝普钠、0.25%蔗糖对苯甲酸抑制番茄种子发芽的缓解作用较好,但50μmol/L硝普钠对胚根生长具有抑制作用;0.25mmol/L维生素C对苯甲酸抑制番茄种子的发芽和胚根生长均起到缓解作用。
Taking tomato as material,5 different concentration of benzoic acid （0,100,150,200,250μmol/L） were set to stress tomato seeds,sodium nitroprusside （SNP）,sucrose,ascorbic acid were added to explore the germination of tomato allelopathy and eliminate allelopathy effect. The results showed that with the increasing concentration of benzoic acid, tomato seed germination, germination rate, germination index, vigor index, allelopathic effect index showed decreasing trend,indicating that the acid inhibited germination of tomato seeds. Exogenous 50μmol/L sodium nitroprusside,0. 25 % sucrose had the better relaxation effect on benzoic acid stress of tomato seed germination, but 50 μmol/L sodium nitroprusside inhibited radicle growth. 0. 25 mmol/L vitamin C had relaxation effect on inhibited tomato seed germination and radicle growth under benzoic acid.
出处
《北方园艺》
CAS
北大核心
2014年第7期20-23,共4页
Northern Horticulture
基金
山西农业大学引进人才科研启动资助项目(XB2008018)
关键词
番茄
种子萌发
化感物质
苯甲酸
硝普钠(SNP)
蔗糖
维生素C
tomato
seed germination
allelochemicals
benzoic acid
sodium nitroprusside （SNP）
sucrose
vitamin C
