The article tested the phenolic substances by HPLC and tartaric acid_Fe spectrophotometry, analyzed the activities of SOD, POD and PPO in female and male tree leaves of Fraxinus mandshurica. Comparation of the compone...The article tested the phenolic substances by HPLC and tartaric acid_Fe spectrophotometry, analyzed the activities of SOD, POD and PPO in female and male tree leaves of Fraxinus mandshurica. Comparation of the components and contents of the phenolic substances and the tendency of the activities of oxydases between sexes were made. The results suggested that the total amount of water soluble and methanol soluble phenolic substances in male leaves was remarkably higher than that in female during the growth season, furthermore there was significant difference in phenolic composition between different sexed leaves. The activities of SOD and POD in male and female were significant different especially in May, and the significance also exists among seasons. Determination of these differences laid both theoretical and practical foundation for further research on sapling sex identification of this tree species.展开更多
观察了栽培条件下白玉兰(M agnolia d enud ata)、望春玉兰(M.biond ii)等玉兰亚属(sub-gen.Yu lan ia)植物的形态变异类型,结合野外观察和标本查阅所获得的玉兰亚属植物形态变异信息,探讨了该类群的形态变异幅度和变异产生的主要原因...观察了栽培条件下白玉兰(M agnolia d enud ata)、望春玉兰(M.biond ii)等玉兰亚属(sub-gen.Yu lan ia)植物的形态变异类型,结合野外观察和标本查阅所获得的玉兰亚属植物形态变异信息,探讨了该类群的形态变异幅度和变异产生的主要原因。建议依据雌蕊群、小枝的性状及其他分类特征,将玉兰亚属亚洲组(sect.Yu lan ia)的种类分为4个亚组:白玉兰亚组(subsect.Yu lan ia)、武当木兰亚组(subsect.M utitep a la)、望春玉兰亚组(subsect.B uergeria)、黄山木兰亚组(subsect.Cy lind rica)。展开更多
文摘The article tested the phenolic substances by HPLC and tartaric acid_Fe spectrophotometry, analyzed the activities of SOD, POD and PPO in female and male tree leaves of Fraxinus mandshurica. Comparation of the components and contents of the phenolic substances and the tendency of the activities of oxydases between sexes were made. The results suggested that the total amount of water soluble and methanol soluble phenolic substances in male leaves was remarkably higher than that in female during the growth season, furthermore there was significant difference in phenolic composition between different sexed leaves. The activities of SOD and POD in male and female were significant different especially in May, and the significance also exists among seasons. Determination of these differences laid both theoretical and practical foundation for further research on sapling sex identification of this tree species.
文摘观察了栽培条件下白玉兰(M agnolia d enud ata)、望春玉兰(M.biond ii)等玉兰亚属(sub-gen.Yu lan ia)植物的形态变异类型,结合野外观察和标本查阅所获得的玉兰亚属植物形态变异信息,探讨了该类群的形态变异幅度和变异产生的主要原因。建议依据雌蕊群、小枝的性状及其他分类特征,将玉兰亚属亚洲组(sect.Yu lan ia)的种类分为4个亚组:白玉兰亚组(subsect.Yu lan ia)、武当木兰亚组(subsect.M utitep a la)、望春玉兰亚组(subsect.B uergeria)、黄山木兰亚组(subsect.Cy lind rica)。
