橡胶树胶木兼优无性系寒害适应性调研初报

A Survey to the Cold Resistance Adaptability of Rubber Timber/Latex Clones

为深入了解目前橡胶树胶木兼优品系在海南垦区中心试验区和广东垦区协作试验区的寒害适应性,以及为品种选育提供基本的理论和实践依据,2008年笔者对两地试区无性系的寒害情况进行了针对性调查。结果表明:此次平流型寒害中两垦区无性系受害均较严重,中心试验区的热试17和热试2的抗寒性很差,寒害级别在5.88以上,极显著高于其他参试无性系,寒害指数高于97.87,4～6级寒害率为100%,无性系成片死亡;热试21、热试10的抗寒性较强,仅存在部分枯枝和掉叶现象;热试3、热试5等的抗寒性较差,热试9、热试11等的抗寒性中等。从抗寒性看,热试17和热试2可作为科研中不抗寒的对照材料,而抗寒性好的热试21和热试10分别适合在琼、粤等植胶区规模种植。

In order to have a good picture of the cold resistant adaptability of current timber/latex clones in the central pilot area of Hainan Province and the cooperative adaptive pilot area of Guangdong Province,and to provide fundamental theories and practical basis for future rubber cold resistant breeding,a survey was made to the cold damages of the clones in these two areas.The clones in these two areas suffered seriously from the advective cold injury in 2008.Reshi 17 and Reshi 2 had a poor cold resistance wi...