| 电导法结合Logistic方程鉴定三倍体枇杷的抗寒性研究 |
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| 引用本文： | 王晓辉,郭启高,何桥,姚丹,李晓林,向素琼,汪卫星,孙海艳,梁国鲁.电导法结合Logistic方程鉴定三倍体枇杷的抗寒性研究[J].西南师范大学学报(自然科学版),2012,37(6):121-124. |
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| 作者姓名： | 王晓辉 郭启高 何桥 姚丹 李晓林 向素琼 汪卫星 孙海艳 梁国鲁 |
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| 作者单位： | 西南大学园艺园林学院,重庆,400716 |
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| 摘 要： | 以三倍体枇杷成熟叶片为试材,经低温处理后采用电导法测定质膜相对电导率,然后利用Logistic方程拟合拐点得到单株半致死温度,结果表明:不同低温处理后,叶片组织的相对电导率与处理温度呈负相关,整体变化为典型S形单峰曲线;在-5℃到-15℃之间,质膜伤害率随温度下降而急剧升高;单株半致死温度在-1.22℃到-10.47℃之间.单株抗寒力"常白1号Q34"最强,"东湖早"最弱.
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| 关 键 词： | 三倍体枇杷 抗寒性 电解质外渗率 半致死温度 Logistic方程 |
Measurement of Cold Tolerance Based on REC and the Logistic Equation in Triploid Loquat |
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| WANG Xiao-hui
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GUO Qi-gao
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HE Qiao
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YAO Dan
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LI Xiao-lin
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XIANG Su-qiong
,
WANG Wei-xing
,
SUN Hai-yan
,
LIANG Guo-lu.Measurement of Cold Tolerance Based on REC and the Logistic Equation in Triploid Loquat[J].Journal of Southwest China Normal University(Natural Science),2012,37(6):121-124. |
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| Authors: | WANG Xiao-hui GUO Qi-gao HE Qiao YAO Dan LI Xiao-lin XIANG Su-qiong WANG Wei-xing SUN Hai-yan LIANG Guo-lu |
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| Institution: | School of Horticulture and Landscape Architecture,Southwest University,Chongqing 400716,China |
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| Abstract: | In order to investigate the semi-lethal temperature(LT50) for triploid loquat,the changes of cell membrane permeability at different low temperatures were studied with triploid loquat mature leaves.The relative electric conductivity(REC) appeared in a significant negative correlation with the treatment temperature and its variations might be described with a typical S-shaped curve with a single peak.Within the range of -5 ℃ to -15 ℃,leakage ratio of electrolyte increased sharply with decreasing temperature.The semi-lethal temperature for the tested materials ranged from -1.22 ℃ to -10.47 ℃.Of the loquat varieties studied,ChangbaiQ34 showed the highest cold tolerance and Donghuzao had the weakest. |
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| Keywords: | triploid loquat cold tolerance relative electric conductivity(REC) semi-lethal temperature(LT50) Logistic equation |
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