摘要
在秋、冬季节的自然低温驯化与胁迫条件下,研究了与菠菜抗寒有关的生理生化指标。结果表明:随着胁迫温度的降低,菠菜叶的可溶性糖与游离脯氨酸的变化是先上升后下降,而根的这2项保护指标的变化是持续上升,而且根的比叶的上升的速度快。在相同的低温胁迫条件下,叶的MDA含量比根的多,而根SOD的活性比叶的高,表明菠菜的根比叶抗寒性强。
In the conditions of autumn and winter low temperature acclimation and the natural stress,the spinach of the cold resistance of the physiological and biochemical indicators was researched.The results showed that with the decreace of the lower temperature stress,the contents of soluble sugar and praline of spinach leaves showed an increase and then a decrease in the change The Root s protection of these two indicators were rising,and the increasing speed of roots was faster than the leaves.At the same under the conditions of low temperature stress, MDA content in the leaf was much more than that of the root. The SOD activity of rootwas much higher than leaf. It was showed that the root was stronger than leaf in cold resistance.
出处
《北方园艺》
CAS
北大核心
2009年第11期63-65,共3页
Northern Horticulture
关键词
菠菜
低温胁迫
抗寒性
生理机制
Spinach
Low temperature stress
Cold resistance
Physiological mechanism
