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| 应用Logistic方程确定‘圆叶红花’口红花的抗寒性 | |
| 引用本文： | 葛亚英,田丹青,郁永明,潘刚敏,夏宜平.应用Logistic方程确定‘圆叶红花’口红花的抗寒性[J].浙江农业学报,2012,24(1):48-51. |
| 作者姓名： | 葛亚英 田丹青 郁永明 潘刚敏 夏宜平 |
| 作者单位： | 1. 浙江省农业科学院花卉研究开发中心,浙江杭州311202;浙江大学农业与生物技术学院,浙江杭州310029 2. 浙江省农业科学院花卉研究开发中心,浙江杭州,311202 3. 浙江大学农业与生物技术学院,浙江杭州,310029 |
| 基金项目： | 浙江省公益技术研究农业项目(2010C32052) |
| 摘 要： | 以2年生‘圆叶红花’口红花(Aeschynanthus radicans)枝条为试材,通过不同低温、不同处理时间下叶片电解质相对外渗率(REC)变化作曲线,并结合Logistic方程计算口红花的低温半致死温度(LTk),结果表明在低温处理12 h以上,口红花叶片REC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口红花叶片的LT50,其温度值在8.1℃至10.1℃之间,这可认为是口红花抗寒能力的重要指标. |
| 关 键 词： | 口红花 抗寒性 电解质外渗率 半致死温度 |
Application of Logistic equation in cold tolerance of Aeschynanthus radicans variety round leaf and red flower |
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| GE Ya-ying , TIAN Dan-qing , YU Yong-ming , PAN Gang-min , XIA Yi-ping.Application of Logistic equation in cold tolerance of Aeschynanthus radicans variety round leaf and red flower[J].Acta Agriculturae Zhejiangensis,2012,24(1):48-51. | |
| Authors: | GE Ya-ying TIAN Dan-qing YU Yong-ming PAN Gang-min XIA Yi-ping |
| Institution: | 2,*(1Research & Development Centre of Flower,Zhejiang Academy of Agricultural Sciences,Hangzhou 311202,China;2Department of Horticulture,College of Agriculture and Biotechnology,Zhejiang University,Hangzhou 310029,China) |
| Abstract: | The biennial branches of Aeschynanthus radicans variety round leaf and red flower were used as test materials.Effects of low temperature and treatment time on the relative electric conductivity(REC) were studied and the semilethal temperature(LT50) was calculated out based on Logistic equation.The results showed that REC increased as a S-curve with the decrease of temperature when the treatment time was longer than twelve hours.According to the S-curves and Logistic equation,the temperature of S-curves inflection point namely LT50 was calculated.The LT50 was between 8.1℃ and 10.1℃,which could be considered as an important index of cold tolerance in Aeschynanthus radicans. |
| Keywords: | Aeschynanthus radicans cold tolerance relative electric conductivity(REC) semilethal temperature(LT50) |
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