Early Selection of Superior Clone of Larix gmelini

Through analysis of variance by data of height growth of 5-year-old youngling on junior Larch seed orchard in Daxing'anling,results showed that it existed significant differences in clones of Larix gmelini.About 30% of superior clone could be selected under the selection of low intensity.The hereditary gain,which could be brought from building 1.5-era seed orchard by selecting from these clones,was estimated preliminary.Imagination of building 1.5-era seed orchard of Larch in Daxing'anling region was proposed.