‘冠军’芦笋雌雄花发育过程中内源激素和多胺含量的变化

Content Changes of Endogenous Hormones and Polyamine During Development of Male and Female Flowers of Asparagus ‘Champion’

以‘冠军'芦笋为试材,研究雌花、雄花发育过程中内源激素和多胺含量的变化,结果表明,在芦笋雌花发育过程中,GA_3含量始终高于雄花,ABA、ZR和IAA含量从两性发育期到单性发育期呈降低趋势;而雄花中的ABA、ZR和IAA含量则从两性发育期到单性发育期迅速上升。雌花GA_3/ABA、GA_3/IAA、GA_3/ZR比值在两性发育期较雄花低,到单性发育期迅速升高,表明较高水平的GA_3和低水平的ABA、IAA、ZR与雌性器官选择性发育有关,而较高水平的ABA、ZR和IAA与雄性器官选择性发育有关。雌花发育过程中多胺Spd、Put和Spm含量均呈先迅速升高后又下降的趋势,而雄花中3种多胺的含量相对稳定,高水平的Spm、Spd和Put与雌性器官发育有关。

Content change was studied on endogenous hormones and polyamine during development of male and female flowers of Asparagus officinalis L.＇Champion＇.The results showed that GA_3 content in female flowers was constantly higher than that in male.ABA,ZR and IAA contents decreased in female flowers from hermaphroditic stage to unisexual stage,while ABA,ZR and IAA contents in male flowers increased rapidly from hermaphroditic stage to unisexual stage.Ratios of GA3/ABA,GA3/IAA and GA3/ZR at hermaphroditic stage were lower in female flowers than that in male flowers,however they increased rapidly at unisexual stage.These results indicated that higher level of GA3 and lower level of ABA,IAA and ZR were related to the development of female organ and higher level of ABA,ZR and IAA were related to the development of male organ in asparagus.Spd,Put and Spm contents increased rapidly and then decreased during development of female flowers,but they remained stable in male flowers.Higher level of Spm,Spd and Put might be related to the development of female organ.