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应用生态学报 ›› 2004, Vol. ›› Issue (4): 663-666.

• 研究论文 • 上一篇    下一篇

钾对番红花球茎膨大的生理生态效应

刘芸1,2, 龙云1, 朱利泉2, 操国兴2, 钟章成1   

  1. 1. 西南师范大学生命科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715;
    2. 西南农业大学农学院, 重庆 400716
  • 收稿日期:2002-11-18 修回日期:2003-03-03
  • 通讯作者: 钟章成
  • 基金资助:
    国家自然科学基金资助项目(30370278);重庆市科委资助项目(20027535)

Physiological and ecological effects of potassium on expansion of crocus corm

LIU Yun1,2, LONG Yun1, ZHU Liquan2, CAO Guoxing2, ZHONG Zhangcheng 1   

  1. 1. School of Life Science, Key Laboratory of Eco-Environment of Three Gorges Reservoir Region of Ministry of Education, Southwest China Normal University, Chongqing 400715, China;
    2. College of Agronomy, Southwest Agricultural University, Chongqing 400716,
  • Received:2002-11-18 Revised:2003-03-03

摘要: 名贵中药番红花球茎的大小是决定其入药器官—柱头多少的关键.用4个不同K水平的营养液培养番红花,结果表明,随着施钾水平的提高,叶片中的钾含量、叶绿素含量、ATP相对含量及叶片净光合速率也相应提高,使得叶片作为“代谢源”的能力加强.随着施钾水平提高,新球茎富集钾的能力、可溶性糖含量、Vc含量和蛋白质含量也增加,致使新球茎作为“代谢库”的功能也增强,球茎膨大速率加快..本文对钾元素通过加强“源”和“库”的功能来提高番红花球茎膨大速率的机理进行探讨,为番红花的进一步研究与利用提供了新的依据.

关键词: 番红花, 钾, 球茎膨大, 生理生态效应

Abstract: The corm size of Crocus sativus,a well-known medicine,is a key limiting factor for its stigma harvest.A water cultural experiment with four different potassium (K) concentrations showed that the K content,chlorophyll content,relative ATP content and net photosynthetic rate in C.sativus leaves increased with improving K concentration,which enhanced the function of leaves to be metabolic source.On the other hand,the K absorbing ability and the contents of soluble sugars,vitamin C (Vc) and protein in new-born corms were increased with improving K concentration,which also strengthened the function of new-born corms to be metabolic sink.This study also showed that K could promote the new-born corm growth rate of C.sativus through strengthening the function of “source" and “sink".

Key words: Crocus sativus, Potassium, Expansion of corms, Physiological and ecological effects

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