草地学报

草地学报 ›› 2015, Vol. 23 ›› Issue (2): 426-428.DOI: 10.11733/j.issn.1007-0435.2015.02.032

• 研究专报 • 上一篇    下一篇

根系切割对菊芋块茎产量及物质分配的影响

乌日娜, 刘辉, 朱铁霞, 高凯   

  1. 内蒙古民族大学, 内蒙古 通辽 028043
  • 收稿日期:2014-08-04 修回日期:2014-12-09 出版日期:2015-04-15 发布日期:2015-03-25
  • 通讯作者: 高凯
  • 作者简介:乌日娜(1989-),女,蒙古族,内蒙古锡林浩特人,硕士研究生,主要从事草地资源与利用研究,E-mail:caokundeyouxiang@126.com
  • 基金资助:

    国家自然科学基金(31201844);内蒙古民族大学博士科研启动基金(BS268)资助

Effects of Root Cutting on the Tuber Biomass and Material Distribution of Helianthus tuberosus

WU Ri-na, LIU Hui, ZHU Tie-xia, GAO Kai   

  1. Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028043, China
  • Received:2014-08-04 Revised:2014-12-09 Online:2015-04-15 Published:2015-03-25

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摘要：

以红皮菊芋(Helianthus tuberosus)为研究对象,通过对营养生长期和现蕾期菊芋根系进行垂直切割处理,探讨根系切割对菊芋块茎生物产量和物质分配的影响.结果表明:根系切割显著提高了块茎产量(P <0.05),且2个处理时间在20 cm条件下均使块茎产量最高;根系切割提高了菊芋块茎比重和根冠比,降低了茎比重、花比重、叶比重和根比重,有利于增加光合产物在块茎中的分配.

关键词: 菊芋, 根系切割, 块茎, 物质分配

Abstract:

The effects of root cutting on the tuber biomass and material distribution of Helianthus tuberosus L. were studied in the field by designing two root cutting stages (vegetative growth stage and squaring stage) and five root cutting radius. The results showed that tuber biomass was significantly improved by root cutting treatment. The highest tuber biomass was obtained at the cutting radius of 20 cm not only in vegetative growth stage but also in squaring stage. Tuber mass ratio and root shoot ratio increased, whereas the mass ratios of flower, leaf, stem and root deceased after root cutting.

Key words: Helianthus tuberosus L., Root cutting, Tuber, Material distribution

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