【摘要】 由于生物膜中脂类的组分比较复杂 ,同时又有膜蛋白以及其他各种因素的影响 ,即使温度在生理温度范围以内变化 ,也能引起分相现象。这种分相影响脂膜的透性 ,从而可以解释低温冷害或低温发生的原因。膜脂脂肪酸不饱和程度越高 ,抗寒性越强。尽管降温速度影响不饱和脂肪酸的形成 ,但是品种的遗传性才是抗性的基础。利用电导值和统计运算 ,鉴定果树的抗性是可行的更多还原

【Abstract】 Biomembrane can be splited phase though within physiological temperature.Because these are complicated lipides and membrane protein in the biomembrane.Low temperature injure can be explained that split phase influence the membrane saturate.Hardiness fruit tree has much more unsaturated fetty acid.Though lower the temperature speed can influence the formation of unsaturated fetty acid.The genotype of variety is the crucial to cold resistance.It is possible that fruit plant cold resistance can be identified according to the percentage of eletrolyte leakage.更多还原