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| 应用电导率法及Logistic方程测试椰子幼苗耐寒性研究 |
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曹红星1, 宋唯一2, 孙程旭1*, 陈思婷1, 唐龙祥1, 赵松林1
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1.中国热带农业科学院 椰子研究所, 海南 文昌 571339;2.商丘师范学院 生命科学系, 河南 商丘 476000
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| 摘要: |
| 以一年生椰子的叶片为材料,在不同低温条件下处理12 h后,对椰子5个品种叶片浸出液的电导率进行测定,应用Logistic方程建立回归模型求出半致死温度。结果表明,在低温胁迫过程中,5个椰子品种的相对电导率均随温度的下降而持续上升,耐寒性大小顺序依次为:海南高种椰子>黄矮椰子>红矮椰子>杂交种椰子>香水椰子,其半致死温度在7.34～12.44 ℃之间。研究结果为椰子的耐寒选育提供理论依据。 |
| 关键词: 椰子 耐寒性 电导率 Logistic方程 |
| DOI： |
| 分类号:Q945.78 |
| Fund project: |
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| Measurement of coldness by electrical conductivity method in associated with the Logistic Equation in coconut seedlings |
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CAO Hong-Xing1, SONG Wei-Yi2, SUN Cheng-Xu1*, CHEN Si-Ting1,
TANG Long-Xiang1, ZHAO Song-Lin1
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1.Coconut Research Institute, CATAS, Wenchang 571339, China;2.Department of
Life Science, Shangqiu Normal University, Shangqiu 476000, China
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| Abstract: |
| One-year-old leaves of 5 coconut cultivars were used to detect relative conductivity under different cold temperature treatment. The semi-lethal temperature(LT50)was conducted by using conductance method with Logistic Equation. The results showed that the relative conductivity were increased as temperature decreased. The hardiness of the tested cultivars was listed as Hainan local tall coconut>Yellow Dwarf coconut>Red Dwarf coconut>Hybrid of coconut>Aromatic coconut,the semi-lethal temperature ranged from 7.34 ℃ to12.44 ℃. This result could provide the theory basis for cold tolerance breeding of coconut. |
| Key words: coconut cold tolerance relative electric conductivity(REC) logistic equation |
