文献类型： 外文期刊

作者： Zheng, Xu ² ; Jitsuyama, Yutaka ¹ ; Terauchi, Takayoshi ¹ ; Iwama, Kazuto ¹ ;

作者机构： 1.Hokkaido Univ, Res Fac Agr, Sapporo, Hokkaido 0608589, Japan

2.China Guangxi Acad Agr Sci, Nanning 530007, Peoples R China

3.Natl Agr Res Ctr Kyushu Okinawa Reg, Sugarcane Expt Stn Tanegashima, Kagoshima 8913102, Japan

关键词： Drought;Non-structural carbohydrate (NSC);Potato;Shading;Stem base

期刊名称：PLANT PRODUCTION SCIENCE （ 影响因子：2.222； 五年影响因子：2.175 ）

ISSN： 1343-943X

年卷期： 2009 年 12 卷 4 期

页码：

收录情况： SCI

摘要： Most Studies oil non-structural carbohydrate (NSC) are concentrated on the leaf and tuber, and little is known about NSC in the stern and its function. To test the hypothesis that, NSC Stored in stern contributes to stable tuber bulking under stress conditions, we grew plants in pots in a greenhouse Under drought and shading Conditions for 17 d during tuber bulking. Compared with the Control, drought and shading significantly reduced leaf and stein dry weights (DW) and total NSC concentration in the main stem base. However, tuber DW increased by 77% in drought, and by 46% in shading conditions relative to the control. The contributions of NSC loss in the stern to tuber DW increase in drought. and shading conditions were 37% and 54%, respectively This Study suggests that NSC stored in the stein base is supplied to tuber under stress conditions to Support tuber bulking.