一.引言许多栽培的雌雄异株植物,其雌株与雄株在经济价值上是不同的。在以收获果实,种子为栽培目的之作物(如千年桐,番木瓜以及留种的菠菜等)常只需保持一定的雄株数目。但是这些植物通常都要到进入开花期时才能区分出雄株而将其一部分除去。所以在生长早期迅速鉴定植物性别的问题引起许多研究者的注意。为了要提供早期鉴别植物性别方法的根据,许多学者进行了雌雄性个体生化特性差异的研究。的研究是很引人注意的。根据S.Satina和M.Demerec的介绍, I. Introduction Many cultivated dioecious plants whose female and male strains differ in economic value. In the harvest of fruits, seeds for cultivation purposes of crops (such as Millennium, papaya and remaining species of spinach, etc.) often only need to maintain a certain number of male plants. However, these plants often have to be distinguished from their male counterparts by removing some of them when they enter the flowering season. Therefore, the rapid identification of plant sex in early growth has aroused the attention of many researchers. In order to provide a basis for early identification of plant sex methods, many scholars conducted a study on the differences in biochemical characteristics between male and female individuals. The research is very attractive. According to the introduction of S.Satina and M.Demerec,