马尾松种子园无性系种实品质及产量的遗传变异

Genetic variation of seed traits and cone yields in clone seed orchards of Pinus massoniana Lamb.

对福建五一林场马尾松（ＰｉｎｕｓｍａｓｏｎｉａｎａＬａｍｂ．）种子园２０个无性系的种子品质及单株球果产量进行了统计分析，结果表明：无性系间在种子品质上存在着极显著差异，而无性系内除种子千粒重差异不显著外，其他性状（果径、果长、单果重和单果出籽数）差异极显著。２０个无性系的单株球果产量大多逐年上升。同时对不同年份无性系结实的稳定性进行分析，划分出较稳定的无性系和较不稳定的无性系，评选出了种子高产品质优良的无性系。

The seed traits and cone yields of a single tree of Pinus massoniana Lamb. were analyzed in Forest Farm of Zhangping Wuyi. The result showed that variation between clones of seed traits was more significant and variation within clones of the seed traits was also more significant except 1000 seed weight. With the age grown up, the cone yields of a single tree of 20 clones increased by years. The stability of cone production at different ages was analyzed. Finally, the clones with high genetic quality and ample production of seeds were selected out.