HE Wei,AI Jun,YANG Yi-ming,et al.Study on the Semi-lethal Temperature of Germplasm Resources of Vitis amurensis Branches[J].Northern Horticulture,2014,38(21):19-22.
山葡萄种质资源枝条的低温半致死温度研究
- Title:
- Study on the Semi-lethal Temperature of Germplasm Resources of Vitis amurensis Branches
- 文章编号:
- 1001-0009(2014)21-0019-04
- 关键词:
- 山葡萄; 抗寒性; 成熟度; Logistic方程; 低温半致死温度
- Keywords:
- Vitis amurensis Rupr.; cold resistance; maturity; Logistic equation; semi-lethal temperature (LT50)
- 分类号:
- S 663.102.4
- 文献标志码:
- A
- 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。
- Abstract:
- 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 amurensis 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 LT50was accurate and reliable，which could be used as indicator identified of cold resistance of Vitis amurensis.The cold resistance existed certain difference among the 9 germplasm resources of Vitis amurensis.Their LT50were from -31.98℃to -39.41℃.There was no significant correlation between cold resistance and maturity among the 9 germplasm resources of Vitis amurensis.
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备注/Memo
第一作者简介：何伟(1990-)，男，硕士研究生，研究方向为山葡萄种质资源的抗寒性评价。
责任作者：艾军（1968-），男，研究员，现主要从事山葡萄和五味子等特种经济果树（药用植物）资源收集与评价及利用等研究工作。E-mail：aijun1005@163.com.
基金项目：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）。
收稿日期：2014-07-21