广东省马尾松优良亲本的无性系选择研究

对广东省19个马尾松主产区的508个优良马尾松单株，进行了多地点、多重复的选择研究。共选择出马尾松优良亲本和无性系59个。其中，根据子代生长量、花期、种子品质和木材比重四个综合指标评选出23个马尾松最优无性系。入选的最优无性系与CK相比，树高>7.6-20.2％，胸径>15.3-30.9％，材积>42-102％，千粒重>12.26％，发芽率>82.42％，木材比重>12.5％。

Study on Superior Families and Clones of Pinus massoniana from Guangdong Province

By multi-places, multi-repetition selection test of 508 pinus massoniana superior trees from 18 regions of Guangdong Province. 59 superior families and clones were selected. Among them, according to the four overall targets of volume growth, flowering time, seed quality and specific weight of wood ,23 superiest clones were selected. Compare with controls, increase of heights was up to 7.6-20.2%,basal diameter was up to 15.3-30.9%,volumes was up to 42-102%,weight of seeds was up to 12.26%,germination percentage was up to 82.42%,and specific weight of wood was 12.5%, by pinus massoniana superiest clones.