油菜早熟突变体成花过程中叶片多胺代谢研究  

The Study on Polyamine Metabolism in Leaves during Flower Formation in the Early-maturing Mutant of Brassica Napus L.

作　　者：艾育芳[1] 陈观水[1] 周以飞[2] 潘大仁[1] 宁文君[2,3] 

机构地区：[1]福建农林大学生命科学学院,福州350002 [2]福建农林大学作物科学学院,福州350002 [3]湖南龙山县农业局,湖南龙山416800

出　　处：《中国农学通报》2011年第12期101-105,共5页Chinese Agricultural Science Bulletin

基　　金：资助省属高校项目"油菜早花相关基因的克隆及生理生化研究"(2007F5017);福建省自然科学基金项目"睾丸酮丛毛单胞菌teiR基因在类固醇降解途径中的作用研究"(2008J0041);教育部科学技术研究重点项目"高效降解类固醇的工程菌菌株的改造与筛选"(207056)

摘　　要：以甘蓝型油菜品种‘福油-4’、RG-8晚熟及其早熟突变体(RG-8M)为材料,研究成花过程中叶片多胺代谢的变化规律,结果表明:较低含量的多胺(主要是腐胺和亚精胺)有利于油菜花芽分化的起始,含量的增加有利于花芽的发育,抽薹越早的品种其体内多胺含量越早到达较高水平。多胺氧化酶(PAO)活性的变化趋势与多胺总量的变化较一致,它们之间呈极显著正相关,说明高活性的PAO也是有利于成花的。Dynamic changes of polyamine metabolism during flower formation in rape（Brassica Napus L.） were studied with three cultivars ＇ Fuyou No.4 ＇,RG-8 and its early-maturing mutant（RG-8M） .The results showed that the lower levels of polyamines（mainly putrescine and spermidine） were benefit to induct floral bud differentiation of rape.The higher levels of polyamines were benefit for floral bud development.And what ＇ s more,the earlier-maturing cultivar was earlier to reach the high level of polyamines.The PAO activity and the content of total polyamines in the leaves changed in parallel,and there was a significantly positive relationship between them.It showed that the higher PAO activity were also benefit for flowering.

关 键 词：油菜 早熟 成花 多胺 

分 类 号：S565.4[农业科学—作物学]