摘要
对刺玫月季育种中的部分亲本和杂交种的枝条,进行不同温度冰冻处理后,采用电阻法测定其电阻值;同时,进行生长恢复试验。依据电阻测定值及扦插存活率,确定植株的抗寒能力。对一些亲本和杂交种枝条的电阻测定值进行回归分析,并建立电阻值与存活率的相关数学模型;通过与相关曲线的对比,结合越冬后抽条率的统计,对一些杂交种的抗寒性进行预测。从遗传角度初步探讨了亲本与子代的抗寒性关系。最后提出了在育种中进行抗寒性研究的可行方法。
28 parent plants and hybrid seedlings with different cold-hardiness were studied using the tissue electrical resistance method and the restoring growth test. A numeral avometer was employed to determine the electrical resistance of the shoot segment of parent and hybrid seedling tissue. The cold hardiness of parent plants and that of some hybrid seedlings was evaluated by calculating the survival rate after different freezing temperature treatments. The relationship between tissue electrical resistance and freezing temperatures and that between tissue electrical resistance and the survival rate of parent plants was established by regression analysis. Based on this model, the cold hardiness of some hybrid seedlings was evaluated. The ralationship of cold hardiness between some parent plants and their hybrid seedlings is discussed.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
1992年第1期60-65,共6页
Journal of Beijing Forestry University
关键词
刺玫月季
冰冻处理
抗寒性
月季
breeding of rejuvenation rose group,tissue electric resistance, restoring growth test, regression analysis, cold hardiness
