黄山松种源选择及遗传稳定性分析

浙江省4个8～10年生黄山松种源造林试验点的结果表明:各种源树高、胸径、村积生长量差异极显著,种源与立地的交互作用显著。各试点种源生长量排序不同,说明不同的种源有不同的遗传型和适生环境条件。英山等种源遗传稳定性较差,适合条件好的地区造林;黄山等种源属“稳定低产型”,在浙江无推广价值;庆元、泰顺、遂昌等种源属“稳定高产型”,在4个试点的平均生长量最优,可以推广造林。选择优良种源造林,当入选率20.0％时,材积的遗传增益可达49.9％。

Provenance Selection of Finns taiwanensis and Its Genetic Stability

With the analysis of provenance test plantations of Finns taiwanensis at 8~10 years old in 4 trial sites in Zhejiang Province, China, the results showed that there were very significant differences among the provenances in growth of tree heigh, diameter and volume, and significant interactions between provenances with environment. Thf increment of provenances were arranged in various order in each trial sites. The results expounded that various provenances had their own genotypic and suitable environmental conditions. Yingshang provenance was unstable and was suited in the excellent plant sites. Huangshang provenance was "stable and low yield" and couldn't be popularized in Zhejiang. Qingyuan, Taishun as well as Shuichang provenances were "stable and high yield" type. They had the greatest average increment and could be popularized in Zhejiang as the excellent provenance. When these excellent provenances were planted in east trial sites, the genetic gain of average volume could reach 49.96 percent as 20 percent of selection rate.