6年生杉木种子园半同胞子_1代与子_2代林遗传及变异的研究

Study on Genetics and Variation of Semisibling DescendantⅠandⅡForest from 6-year Cunninghamia lanceolata Seed Orchard

对６年生杉木种子园半同胞子１代与子２代林成林对比研究表明，在树高、胸径生长上，家系间存在极显著差异，而同世代不同家系较不同世代同家系间差异更显著，世代均值间和世代与家系的交互作用差异不显著。据此，在种子园产量缺乏的情况下，可采集其半同胞子１代林种子用于造林。

Study on semisibling descendantⅠandⅡ forest from 6-year Cunninghamia lanceolata seed orchard showed that there had evident difference in height,D.B.H.among families,meanwhile.The difference in different families but in the same generation was even more than in the same family but different generations.There was no significant difference on reciprocation among mean generations values and between generation and families.Therefore. under the shhortage of seed output,seed of semisibling descendant I forest could be collected for afforestation.