外源一氧化氮对香椿芽苗菜种子发芽及生长的影响  

Effects of Exogenous Nitic Oxide on the Seed Germinating and Seedlings Growth of Toona Sinensis Roem

作　　者：穆红梅[1] 董仲国[2] 杨鑫[1] 蔡连捷[1] 

机构地区：[1]聊城大学农学院,山东聊城252059 [2]山东省农业管理干部学院园林技术系,山东济南250100

出　　处：《聊城大学学报（自然科学版）》2011年第3期83-86,共4页Journal of Liaocheng University:Natural Science Edition

基　　金：聊城大学博士科研启动基金(31805)

摘　　要：分别以0、0.2、0.4、0.6、0.8、1.0mg/L外源一氧化氮(nitric oxide,NO)供体硝普钠(SNP)处理香椿种子,结果表明:不同浓度的外源SNP对香椿种子发芽势、发芽率及幼苗的芽长、根长、茎粗和干鲜比均有明显的促进作用.既能提高发芽势、出苗整齐,又能提高发芽率的外源一氧化氮的浓度为0.4mg/L.综合发芽势、发芽率、干重、鲜重、芽长、根长等指标对香椿种芽促进作用最大的外源一氧化氮的浓度是0.8mg/L.The seeds of Toona sinensis Roem were treated with 0、0.2、0.4、0.6、0.8、1.0 mg/L exogenous nitric oxide（sodium nitroprussiate were used as the donor） separately.The results showed that the germination energy,percentage of germination of the seeds of Toona sinensis Roem and the seedling length,root length,the stem thick,and the ratio of dry weight to fresh weight were all significantly increased compared with the control.When treated with the 0.4 mg/L exogenous nitric oxide,not only the germination energy but also the percentage of germination of the seeds was improved simultaneity.As a whole the germination energy,germination of the seeds,dry weight,free weight,Seedling length,root length,were all increased when the exogenous nitric oxide was 0.8 mg/L.

关 键 词：一氧化氮 香椿 发芽率 幼苗生长 

分 类 号：S604.3[农业科学—园艺学]