论文部分内容阅读
黑荆树(Acacia mearnsii)系亚热带速生树种,树皮富含单宁,是优质栲胶原料,木材质地坚硬,用途广泛。黑荆树生长迅速,秋播苗造林后第二年高生长可达2米,甚至3米以上。但同一林分中,林木个体往往分化程度很高,个体问差异非常明显。这在一定程度上反映了个体间遗传差异,为育种工作提供了丰富的材料。当黑荆树幼龄林分还没有郁闭,或刚郁闭,个体之间竞争不强,选择幼龄个体进行性状分析,可以减少环境差异造成的个体间性状差异,能较好地反映个体之间因遗传基础不同引起的性状差异。
Acacia mearnsii (Acacia mearnsii) is a subtropical fast-growing tree species, bark rich in tannin, is a high quality gum material, wood texture hard, versatile. Black wattle grow rapidly, autumn sowing afforestation in the second year of high growth up to 2 meters, or even 3 meters. However, in the same forest stand, the individuals of forest often have a high degree of differentiation, and the difference between individuals is very obvious. To a certain extent, this reflects the genetic differences among individuals and provides abundant materials for breeding work. When the young Wattle tree stands have not yet closed, or just closed, the competition between individuals is not strong, choose young individuals trait analysis, you can reduce environmental differences caused by differences in traits between individuals can better reflect the individual Differences in traits caused by genetic basis.