山葡萄种质资源枝条的低温半致死温度研究  

Study on the Semi-lethal Temperature of Germplasm Resources of Vitis amurensis Branches

作　　者：何伟[1] 艾军[1] 杨义明[1] 范书田[1] 王振兴[1] 

机构地区：[1]中国农业科学院特产研究所,吉林长春130112

出　　处：《北方园艺》2014年第21期19-22,共4页Northern Horticulture

基　　金：农业部物种保护资助项目(2014NWB041);农业部;财政部国家山葡萄种质资源平台资助项目(2013058)

摘　　要：以山葡萄种质资源的成熟1年生休眠枝条为试材,测定了不同梯度低温处理下电导率的变化,采用相对电导率拟合Logistic方程,计算低温半致死温度(LT50),鉴定不同山葡萄种质资源的抗寒性。结果表明:用Logistic方程进行拟合后,拟合度高,所求低温半致死温度准确可信,可作为山葡萄抗寒性鉴定指标;试验的9份山葡萄种质资源间抗寒性存在一定差异,低温半致死温度范围为-31.98^-39.41℃,种质资源的抗寒性与枝条成熟度无明显相关性。Taking one-year-old dormant branches of 9 germplasm resources of Vitis amurensis as test materials, the relative electric conductivity was determined under different artificial simulated low temperature which was fitted to Logistic equations,then calculated the semi- lethal temperature （LT50） of the 9 germplasm resources of Vitis arnurensis respectively,in order to evaluate cold resistance of Vitis amurensis. The results showed that the relative electric conductivity was closely fitted to Logistic equations,indicating the LT50 was accurate and reliable,which could be used as indicator identified of cold resistance of Vitis arnurensis. The cold resistance existed certain difference among the 9 germplasm resources of Vitis amurensis. Their LT50 were from -31.98℃ to -39. 41℃. There was no significant correlation between cold resistance and maturity among the 9 germplasm resources of Vitis amurensis.

关 键 词：山葡萄 抗寒性 成熟度 LOGISTIC方程 低温半致死温度 

分 类 号：S663.102.4[农业科学—果树学]