摘顶对黄瓜^(14)C及^(15)N同化物运转与分配的影响  

Effect of Topping on Translocation and Distribution of ^(14)C and ^(15)N-amillate in Cucumber

作　　者：于贤昌[1] 蒋先明[1] 

机构地区：[1]山东农业大学园艺系,泰安271018

出　　处：《园艺学报》1996年第1期54-56,共3页Acta Horticulturae Sinica

摘　　要：研究了长春密刺黄瓜于第15叶摘顶后,14C及15N同化物向各器官的运转与分配状况。结果表明,摘顶增加了14C和15N同化物向果实和侧枝的分配率,减少了向茎叶的分配率。摘顶15日内向根系的分配率与对照相比并无太大差异,但30日后却远低于对照,此时摘顶株其它备器官14C的放射性比强也明显低于对照。这是因摘顶15日后,功能叶片衰老,根系活力下降的缘故。This experiment was carried out in green house at Shandong Agricultural Univercity in the spring of 1992. The effect of topping on translocation and distribution of 14C and 15N-amillate in cucumber was studied. The results were as follows: Distribution rates of 14C and 15N-amillate in cucumber fruit and laterals increased but was reduced in stems and leaves as a result of topping. Distribution rate of 14C and 15N-amillate in roots was not decreased 15 days after topping, but was greatly reduced 30 days after topping.

关 键 词：黄瓜 摘顶 分配 碳 氮 

分 类 号：S642.201[农业科学—蔬菜学]