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电导法测定西洋梨的抗寒性研究

作  者:
王文举;李小伟;顾文龙
单  位:
宁夏大学农学院
关键词:
西洋梨;电解质外渗率;抗寒性;半致死温度
摘  要:
以1 a生枝条为试材,对6个西洋梨品种进行了电解质渗出率测定,应用Logistic方程建立回归模型;确定半致死温度在低温持续24 h为-23.42~-26.86℃;48 h为-27.32~-33.21℃;72 h为-28.27~-32.23℃之间,6个西洋梨的抗寒性由强到弱依次为:八月红>巴梨>早巴梨>红巴梨>五九香>红安久;相关系数介于0.9527~0.9909之间,表明不同低温持续时间的电解质渗出率遵循Logistic方程的变化规律,且与半致死温度呈线性关系。
译  名:
Conductance Method Determination to the Cold Tolerance of Six Occidental Pear-Pyrus Communis
作  者:
WANG Wen-ju,LI Xiao-wei,GU Wen-long(Agricultural College of Ningxia University,Yinchuan,Ningxia 750021,China)
关键词:
Occidental Pear-Pyrus communis;Electrolyte leakage;Cold tolerance;Lethal dose-50 temperature
摘  要:
The electrolyte leakage of 6 Occidental Pear-Pyrus communis cultivars were determined,1 year old dormant shoots were taken as the materials,and regression model was established by using Logistic quation.It was determined that lethal dose-50 temperature 24 h was-23.42 to-26.86℃,48 h was27.32 to-33.21℃,72 h was-28.27 to-32.23℃,and the order of cold resistance ability was Bayuehong,Early Bartlett,Bartlett,Red Bartlett,Wujiuxiang,Red D′Anjou.Correlation coefficient was 0.9527~0.9909l.The results showed that the change of electrolyte leakage under different low temperature and low temperature treating time followed variation regular of Logistic quation,and had a linear relationship with lethal dose-50 temperature.

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