中文摘要：

以＂青芋2号＂和＂青芋3号＂菊芋为试材,研究了整个生长周期内菊芋不同器官中以果聚糖为主的碳水化合物含量变化动态特征以及在各器官的分配情况。结果表明：苗期叶、茎中果聚糖含量和总量增加迅速,主要贮存在叶中;植株迅速生长期和块茎形成期叶、茎中果聚糖含量呈起伏变化;全株果聚糖积累总量呈持续上升趋势,主要贮存在叶和茎中;开花期叶、茎中的果聚糖含量和积累总量先后达到全生育期的最高值,并完成果聚糖从叶片向茎的转运;块茎内含量稳定,积累总量增加缓慢;果聚糖主要贮存在茎内;块茎膨大期,全株的果聚糖积累量增加缓慢,以植株内部转运为主,果聚糖开始迅速从茎向块茎分配,到生育期末,全株果聚糖70%分配到块茎。

英文摘要：

Jerusalem artichoke（Helianthus tuberosus L. ） （‘ Qingyu 2＇ and ‘ Qingyu 3＇） were used to study carbohydrate content changes in dynamic characteristics and distribution throughout the growth cycle of Jerusalem artichoke in different organs based fructan carbohydrate content. The results showed that fructan content and the total increased rapidly in the seedling leaf, stem and mainly stored in the leaves~ fructan content in tubers, leaves, stem showed the ups and downs in the tuber formation and rapid growth period of plants. The total fructan accumulation of the whole plant has continued to rise, and mainly stored in the leaves and stems~ fruetan content and total accumulation of leaves, stems reached the highest value of the whole growth period in the flowering stage, and completed the transport of sugar from the leaves to the stem. The content of tubers was stable and total accumulation increased slowly. Fructan stored mainly in the stem~ the whole plant fructan accumulation increased slowly in the tuber expansion period, mainly transport of internal plants, fructan quickly allocated from the stem to the tubers, fruit poly sugar the 70% fructan content of the whole plant allocated to the tubers tuber in the end of growth period.