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Position: Home > Articles > Measurement of Cold Tolerance Based on REC and the Logistic Equation in Camellia hiemalis‘Shishi Gashira’ Acta Horticulturae Sinica 2005,32 (1) 148-150

以电导法配合Logistic方程确定茶梅‘小玫瑰’的抗寒性

作  者:
徐康;夏宜平;徐碧玉;林田;杨霞
单  位:
杭州花圃;杭州市农业科学研究院;浙江大学农业与生物技术学院园艺系
关键词:
茶梅;抗寒性;回归方程;电解质外渗率;半致死温度
摘  要:
以不同处理时间、不同低温处理下茶梅‘小玫瑰’叶片的电解质外渗率(REC)变化作曲线, 并结合Logistic方程分别计算茶梅的半致死温度(LT50),结果发现在低温处理6h以上,茶梅叶片的REC 均随着处理温度的降低而呈“S”形上升,由此计算出“S”形拐点对应的温度即为茶梅叶片的LT50,其温 度值在-12.5℃至-14℃之间,这可认为是茶梅抗寒能力的重要指标。
译  名:
Measurement of Cold Tolerance Based on REC and the Logistic Equation in Camellia hiemalis‘Shishi Gashira’
作  者:
Xu Kang 1, Xia Yiping 1*, Xu Biyu 2, Lin Tian 2, and Yang Xia 3 ( 1Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029,China; 2Hangzhou Flower Nursery, Hangzhou 310007,China; 3Hangzhou Academy of Agricultural Sciences, Hangzhou 310008,China)
关键词:
Camellia hiemalis;Cold tolerance;Logistic equation; Relative electric conductivity(REC);Semilethal temperature(LT 50)
摘  要:
Regarding the relative electric conductivity(REC)as a physiological indicator for the cold tolerance in leaves of Camellia hiemalis‘Shishi Gashira’, the curves of REC against different treatment of temperatures and treatment periods were represented using Logistic equation. The results showed that REC increased as a S-curves with the decreased of temperature when the treatment time was longer than six hours. According to these S-shaped curves and the Logistic equation, we could calculate the semilethal temperature(LT 50). The LT 50 of C. hiemalis‘Shishi Gashira’was between -12.5℃ and -14℃, which may be an important index of cold tolerance in C. hiemalis.

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