根茎禾草发育过程中糖含量与能值分配规律的研究  

Studies on the Energy Allocation and Sugar Content in the Developing Periods of Rhizomatous Grasses

作　　者：易津[1] 李青丰[1] 乌仁其木格[1] 门中华[1] 

机构地区：[1]内蒙古农业大学,呼和浩特010019

出　　处：《干旱区资源与环境》2001年第S1期55-62,共8页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金资助项目 (项目编号 :C3976 0 0 12 )

摘　　要：研究表明根茎类禾草含糖量和能值分配存在明显的发育时期、发育器官和植物根茎类型的差异。一般根茎类禾草含糖量在地上部呈单峰曲线 ,前营养期高于后营养期 ;地下部呈“S”型曲线 ,后营养期高于前营养期。根茎类禾草总含糖量和地上部含糖量是 :短根茎大于长根茎 ;地下部含糖量是 :长根茎大于短根茎 ;穗部是 :短根茎大于长根茎。根茎类禾草有性生殖器官的能值分配较低 ,一般在 5～ 1 0 %之间 ,短根茎高于长根茎 ;地上部的能值分配较高 ,一般在 40～ 80 %之间 ,短根茎明显高于长根茎 ,前营养期高于后营养期。地下部的能值分配一般在 1 0～ 50 %之间 ,短根茎明显低于长根茎 ,后营养期高于前营养期。根茎类禾草在生育期内 ,地上部与地下部的能值分配存在明显的互补性 ;在前营养期地上部营养器官与生殖器官的能值分配存在明显的一致性。糖含量与生长发育相关分析达极显著或显著正相关 ,这表明糖含量与根茎类禾草的生长发育有较高的一致性。The results of the research showed that there were obvious differences in the energy allocation and sugar content among development periods ?organs and rhizomes types in rhizomatous grasses. In general,the sugar content of above ground were all one lop curves, the sugar content of early vegetative developing period was higher than that of the late vegetative developing period ;The sugar content of under ground were all "S"curves,the sugar content of late vegetative developingperiod was higher than that ...

关 键 词：根茎类禾草 含糖量 能值 分配规律 

分 类 号：Q949.714[生物学—植物学]