不同种源的马尾松半同胞家系子代苗期生长表现

Seedling growth performance of half-sib families' generation of Pinus massoniana from different provenances

对来自湖南、广西、浙江、广东、福建等5个省的36个马尾松半同胞优良家系自由授粉子代苗期生长表现进行分析。结果表明:不同种源马尾松家系苗的平均地径和苗高生长差异均达到了极显著水平,平均苗木高生长、地径生长均以湖南、广东、广西3个种源的较好。不同家系之间在苗高、地径生长上也表现出极显著的差异,高生长以GXGLN2号家系为最好,其次是HN29号、GD1号家系;地径生长以GD8号家系为最好,其次是HN7号、GXGLN2号家系。综合考虑高生长和地径生长,GXGLN2号家系表现最好。马尾松苗高与地径生长存在着极显著的正相关。

Seedling growth performance of half-sib families＇ pollination progeny generation of Pinus massoniana was analyzed which came from 36 superior families of five provinces,such as Hunan,Guangxi,Zhejiang,Guangdong and Fujian Province. It was found that the average ground diameter growth and seedling height growth differences of Pinus massoniana family seedling from different provenances reached extremely significant levels. Average seedling height growth and ground diameter growth from Hunan,Guangdong,Guangxi provenances were good. Also there were extremely significant differences in height growth and ground diameter growth among different families. The No. GXGLN2 family height growth was the best,followed by the No. HN29 and No. GD1 families. The No. GD8 family ground diameter growth was the best,followed by the No. HN7 and No. GXGLN2 families. Considering the height growth and ground diameter growth,the No. GXGLN2 family showed the best. There was very significant positive correlation between seedling height growth and ground diameter growth of Pinus massoniana.