摘要
目的:通过研究连作地黄的生理生化效应,探讨地黄的连作障碍机制。方法:测定分析地黄的生长指标、块根ATP酶活性、根系活力及营养吸收等生理生化指标的变化。结果:连作地黄的生长速度降低,叶片面积下降,造成源能力不足,光合产物减少;抑制了块根ATP酶活性及地黄的根系活力,抑制了对钾和氮的吸收,造成植株钾和氮素营养胁迫。结论:连作地黄源能力的不足是限制地黄块根膨大的重要因素;连作地黄根系活力、三磷酸腺苷酶(ATP酶)活性的下降及地黄植株的钾和氮素营养胁迫是影响连作地黄生长及块根膨大的原因之一。
Objective:To study the effects of continuous cropping obstacles on growth of Rehmannia glutinosa. Method:The growth indexes,activity of root ATPase,root activity and mineral nutritional absorption were determined. Result:Continuous copping decreased growth rate and declined the size of leaves. Activity of root ATPase and root activity were also inhibited. Conclusion:The deficiency of source capacity is an important factor to restrain the root development of R. glutinosa with continuous cropping,the decrease...
出处
《中国中药杂志》
CAS
CSCD
北大核心
2009年第1期18-21,共4页
China Journal of Chinese Materia Medica
基金
国家自然科学基金项目(30772729)
国家科技支撑计划项目(2006BAI09B03)
关键词
地黄
连作障碍
根系活力
ATP酶活性
营养胁迫
Rehmannia glutinosa
continuous cropping obstacle
root activity
ATPase activity
nutritional stress
