日本落叶松原生种源和次生种源对比试验研究

The experimental comparison study of primary and secondary provenance of Japanese larch

为扩大日本落叶松的遗传变异幅度,改善中国日本落叶松的育种状况,提高育种水平和林业生产力。对落叶松种和种源、原生种源试验林建成后10 a的数据进行比较,结果表明:日本落叶松次生种源的胸径、树高、单株材积分别是原生种源的1.10,1.11,1.23倍;选育出了13个优良种源,为我省及辐射推广地区营造日本落叶松速生丰产林找到了优良种源。

In order to expand genetic variation range and improve breeding conditions and forestry productivity of Japanese Larch in China,data of primary provenance and secondary provenance collected 10 years after completion of test stand of Japanese larch were compared.The results showed that the DBH,tree height and individual volume of secondary provenance of Japanese Larch were 1.10 times,1.11 times and 1.23 times higher than that of primary provenance respectively.We selected and obtianed 13 superior provenances for Japanese larch plantation in Hubei province and other radiation extension area.