PEG对10℃低温吸胀下实葶葱种子萌发的影响  

Effects of PEG on Seeds germination of Allium galanthum L.with 10℃ Imbibition

作　　者：史梅[1] 谭敦炎[2] 林辰壹[1] 尹旭[1] 

机构地区：[1]新疆农业大学林学与园艺学院,新疆乌鲁木齐830052 [2]新疆农业大学草业与环境科学学院,新疆乌鲁木齐830052

出　　处：《北方园艺》2009年第10期12-15,共4页Northern Horticulture

基　　金：新疆维吾尔自治区高校科研计划重点资助项目(XJEDU2008I12)

摘　　要：基于种子萌发试验,测定了10℃低温对实葶葱种子发芽的影响及浓度为0%、10%、15%、20%、25%、30%的PEG处理对实葶葱种子低温吸胀1、2、3、5、7 d的缓解作用。结果表明:10℃低温吸胀持续时间超过临界时间(1 d)时就会抑制实葶葱种子的萌发。10℃低温吸胀通过PEG的渗透调节,可显著改善实葶葱种子的萌发,其中以处理浓度15%时效果最好,并随着低温吸胀时间的延长PEG的作用越明显。各浓度PEG处理10℃低温吸胀的实葶葱种子1 d时种子萌发效果最佳。Based on germination experiment,the effects of 10℃on the seeds germination of Allium galanthum L.and the different influences of PEG treatment at various PEG concentrations of 0%,10%,15%,20%,25%,30% on the seeds of Allium galanthum imbibed at 10℃ for 1 d,2 d,3 d,5 d,7 d were studied.After analysis of variance,the results showed that it will inhibit the germination of Allium galanthum imbibed at 10℃ when the imbibition time was longer than the critical time（1 d）.It can significantly improve the germination of seeds treated with PEG while imbibing at 10℃.The best PEG concentration was 15% , and with the imbibition time extended the effect of PEG treatment showed more obviously. Seeds treating with PEG at different concentrations, all germinated best when imbibed at 10℃ for 1 d.

关 键 词：聚乙二醇 低温吸胀 实葶葱 相对电导率 

分 类 号：S633.9[农业科学—蔬菜学]