用电导法配合 Logistic 方程确定杏花期的抗寒性

Cold Resistance Determination of Apricot Flower Dates with Electronlyte Leakage and Logistic Equation

用电导法配以Ｌｏｇｉｓｔｉｃ方程，测定了６个不同生态地区杏（ａｐｒｉｃｏｔ）品种花蕾和盛开花朵的半致死温度（ＬＴ５０）。实验结果表明，杏花器官不同部位的抗寒性大小，雌蕊＜雄蕊＜花瓣，并证明了北方品种较南方品种耐寒。杏花蕾的ＬＴ５０在－６～－９℃，盛开花朵的ＬＴ５０在－４～－６℃．

Critical lethal temperature (LT 50 ) of apricot pink flower buds and full blooming flower in six different ecologic regions was determined with electrolyte leakage and logistic equation.The results showed:the resistances of different apricot flower organs followed the sequence of pistil<atamen<petal;the north varieties were stronger in cold resistance than those of south ones;and the LT 50 of pink flower buds and full blooming flowers was in -6～-9℃ and -4～-6℃ respectively.