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Position: Home > Articles > Physiological and ecological effects of potassium on expansion of crocus corm. Chinese Journal of Applied Ecology 2004,15 (4) 663-666

钾对番红花球茎膨大的生理生态效应

作  者:
刘芸;龙云;朱利泉;操国兴;钟章成
单  位:
西南农业大学农学院;西南师范大学生命科学学院
关键词:
番红花;钾;球茎膨大;生理生态效应
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
译  名:
Physiological and ecological effects of potassium on expansion of crocus corm.
作  者:
LIU Yun 1,2,LONG Yun 1,ZHU Liquan 2,CAO Guoxing 1,ZHONG Zhangcheng 1( 1School 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,China).
关键词:
Crocus sativus, Potassium, Expansion of corms, Physiological and ecological effects.
摘  要:
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".

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