摘要
在控制环境因子和遗传因子的条件下,以白花泡桐、毛泡桐、毛泡桐×白花泡桐和白花泡桐×毛泡桐的无性系为材料,运用物候学观察、杂交试验、树木逆境生理学试验、引种试验和反证法证明的方法研究了泡桐假二叉分枝机理。结果表明:冬季的低温胁迫和水分胁迫单独或共同的作用导致泡桐顶芽死亡。初步提出"低温—水分胁迫假说"(The hypothesis of low-temperature stress and water stress)作为泡桐假二叉分枝机理的理论解释。
An experiment was conducted to study the mechanism of false dichotomous branching for Paulownia fortunei （Seem.） Hemsl. , P. tomentosa （Thunb.） Steud. , P. fortunei × P. tomentosa, and P. tomentosa × P. fortunei by means of pheno- logical observation, cross experiments, tree stress physiology experiments, introduction experiment and reduction to ab- surdity under the controlled environmental and genetic factors. Results showed that low-temperature stress and/or water stress in winter resulted in the death of terminal bud and top shoot of paulownia. It is suggested that the hypothesis of low- temperature stress and water stress could be used as a theoretical explanation of the mechanism of false dichotomous branching for paulownia.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2009年第2期6-7,24,共3页
Journal of Northeast Forestry University
关键词
泡桐
假二叉分枝机理
低温-水分胁迫假说
Paulownia
Mechanism of false dichotomous branching
Hypothesis of low-temperature stress and water stress
