基金项目:林业公益性行业科研专项经费项目( 200704024);广东省林业科技创新专项资金项目( 2009KJCX005-1);广东省林业科技项目( 2007-03、2008-03)
作者简介:韦如萍( 1978-),女,广西河池人,林业高级工程师,硕士,主要从事林木遗传育种和培育研究; E-mail: wrpgx@163.com
对 11年生南洋楹自由授粉家系引种试验林进行研究表明,参试家系的保存率之间存在极显著差异,变异幅度为 28%~ 80%,生长和形质性状在家系间也有极显著差异。性状遗传相关分析显示,三个生长性状间呈高度正遗传相关,生长性状与大部分形质性状也有正遗传相关关系。聚类分析可把 22个家系分成 4大类,以类别 I综合表现最好,其中又以家系 M4、M9、P1、P4、P8最优,其生长及性质性状均表现优良,其中材积生长量为 0.2364~ 0.3249m3,主干通直度得分 2.24~ 2.48分,分别比 CK高出 15.65%~ 38.63%及 0.36~ 0.4分,保存率为 56%~ 70%,与 CK及群体均值相近,此类家系可作为进一步研究的材料。
The tests on the open-pollinated families of 11-year-old Paraserianthes falcataria show that the preservation rate of 22 families were 28%~80%, and the differences were highly significant among them. There were also highly significant differences exited among families in growth and form qualities. Genetic correlation analysis suggested that there were highly positive genetic correlation among three growth qualities, and there were also positive genetic correlation among growth qualities and most stem-form qualities. According to the results of cluster analysis, the 22 families were divided into 4 categories, the families of were the best in overall performance, and the 4 families of 1st category, M4、M9、P1、P4、P8 had the best growth and form qualities compared to the other families, which average volume and the value of stem straightness were 0.2364~0.3249 m3 and 2.24~2.48, especially, and the values were 15.65%~38.63% and 0.36~0.4 higher than CK, the preservation rates were 56%~70%, which were similar to CK. So the category should be the materials of further study.