摘要
耐寒育种是柚木（Tectonagrandis）研究的重点，为选择柚木耐寒优良无性系，调查了半年生柚木无性系试验林越冬冷害后的保存率。结果表明，两个试验点不同柚木无性系间的保存株数均达到极显著差异（P〈0．01）。广西博白试验点保存率为0～91．67％，贵州罗句试验点保存率为8．33％～86．17％。初步筛选出耐寒性强的柏木无性系有7514、7509、7531、Z408、7559和8301，保存率都在80％以上。参试柚木缅甸种源耐寒性优于印度种源。
The breeding on cold tolerance is an important point for teak （ Tectona grandis ） . In order to select cold tolerance clones, this paper investigated the survial rates of half-year-old teak clone field trials after cold injure in winter. The result showed that the survivals had significant difference among clones. The survival ratio of Bobai trial in Guangxi province was ranged from 0 to 91.67%, and at Luodian trial in Guizhou province was ranged from 8.33% to 86.17%. The clones 7514, 7509, 7531, Z408, 7559 and 8301 were selected as cold tolerance clones, with which survival ratio were all higher than 80% at two field trials. Myanmar teak provenances had higher cold tolerance than Indian provenances.
出处
《广东林业科技》
2015年第3期16-19,共4页
Forestry Science and Technology of Guangdong Province
基金
国家科技支撑计划"柚木和西南桦珍贵用材林定向培育技术研究与示范"(2012BAD21B01)
关键词
柚木
耐寒
无性系
早期选择
teak
cold tolerance
clone
early selection
