【摘要】 以‘寒富’苹果及其亲本系‘东光’、‘富士’为试材,对人工低温胁迫下枝条电导率进行了研究。结果表明:3个苹果品种枝条的电导率随温度的降低而升高,但品种之间差异不明显。结合Logistic方程计算出的‘寒富’、‘东光’、‘富士’的低温半致死温度分别为-43.3、-45.3、-37.5℃。通过对3个苹果品种枝条电导率的比较表明,‘东光’苹果低温适应性最强,‘富士’苹果对低温适应能力最弱,‘寒富’苹果居中。更多还原

【Abstract】 ‘ Hanfu ’ apple and its parents(‘ Dongguang ’ × ‘ Fuji ’) were used to study shoot cold tolerance through measuring electric conductivity under artificial low-temperature stress.The results showed that shoots electric conductivity of ‘ Hanfu ’ apple and its parents increased as decrease of cold temperature,with insignificant differences among three apple cultivars.The semilethal temperatures of ‘ Hanfu ’ apple,‘ Dongguang ’ and ‘ Fuji ’,calculating by Logistic equation,were-43.3,-45.3,-37.5℃,respectively.In conclusion,cold tolerance of ‘ Dongguang ’ apple was the strongest,‘ Fuji ’ apple was the weakest,and ‘ Hanfu ’ was the middle one.更多还原