Fructan Metabolism of Helianthus tuberosus L.at Different Altitudes
[Objective] To study the fructan metabolism features of Helianthus tiiberosus L. At different altitudes. [Method] Helianthus tuberosus (Qingyu 2 and Qingyu 3) were used to study fructan metabolism in each organ of Helianthus tuberosus at different altitudes. [ Result ] With high er altitude, the total content of fructan decreased, DP of fructan in the aboveground part decreased, and the fructan accumulation in tuber and the transferred fructan from the aboveground part to the tuber reduced. At 2 600 m or below,with the increasing altitude,the DP of fructan in tuber decreased,so did the fructan accumulation in the aboveground part; above 2 900 m,both the DP of fructan in tuber and the fructan accumulation in the aboveground part were high. [Conclusion] The study provided references for expanding the planting area and promoting the development of Helianthus tuberosus L. Resources.