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园艺学报 ›› 2005, Vol. 32 ›› Issue (1): 148-150.

• 研究报告 • 上一篇    下一篇

以电导法配合Log istic方程确定茶梅‘小玫瑰’的抗寒性

徐 康1  夏宜平13
 徐碧玉2  林 田2  杨 霞3
  

  1. (1 浙江大学农业与生物技术学院园艺系, 杭州310029; 2 杭州花圃, 杭州310007; 3 杭州市农业科学研究院, 杭州310008)
  • 收稿日期:2004-02-09 修回日期:2004-07-20 出版日期:2005-02-25 发布日期:2005-02-25

Mea surement of Cold Tolerance Ba sed on REC and the Log istic Equa tion inCam ellia h iem a lis ‘Shishi Ga shira’

Xu Kang1 , Xia Yip ing13
, Xu Biyu2 , L in Tian2 , and Yang Xia3
  

  1. ( 1Department of Horticulture, College of Agriculture and B iotechnology, Zhejiang University, Hangzhou 310029, China;2Hangzhou FlowerN ursery, Hangzhou 310007, China; 3Hangzhou Academy of Agricultural Sciences, Hangzhou 310008, China)
  • Received:2004-02-09 Revised:2004-07-20 Online:2005-02-25 Published:2005-02-25

摘要: 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6 h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- 1215℃至- 14℃之间, 这可认为是茶梅抗寒能力的重要指标。
关键词:

关键词: 茶梅, 抗寒性, 回归方程, 电解质外渗率, 半致死温度

Abstract: Abstract: Regarding the relative electric conductivity (REC) as a physiological indicator for the cold
tolerance in leaves of Cam ellia hiem alis ‘Shishi Gashira’, the curves of REC against different treatment of
temperatures and treatment periodswere rep resented using Logistic equation. The results showed that REC in2
creased as a S2curves with the decreased of temperature when the treatment time was longer than six hours.
According to these S2shaped curves and the Logistic equation, we could calculate the semilethal temperature
(LT50 ). The LT50 of C. h iem alis ‘Shishi Gashira’was between - 1215℃ and - 14℃, which may be an
important index of cold tolerance in C. hiem alis.

Key words: Key words: Cam ellia hiem alis, Cold tolerance, Logistic equation, Relative electric conductivity(REC), Semilethal temperature (LT50 )

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