落叶松种间杂交测定技术

Interspecific Hybridization Technical Measuring of Larix

以新疆落叶松为母本 ,华北、日本、兴安和长白落叶松为父本进行控制授粉制种、育苗和造林。结果表明 :各杂交组合苗木均具有较强的杂交优势 ,但以日本、兴安和长白落叶松为父本的杂交子代苗 ,新梢木质化程度较差 ;以华北落叶松为父本的杂交苗抗性好 ,且花期与新疆落叶松较为吻合。综合分析认为 ,华北落叶松可作为杂交利用的首选组合亲本。

Using L. sibirica as female parent, L. principis-rupprechtii , L. kaempferi Carr., L. olgensis Henrry and L. gmelinii Rupr as male parent, species hybriding by controlled pollen making seeds, raising seedlings and forest culture were carried out. The results show that all hybridized combination seedling have stronger heterosis, for heterozygous plant with L. kaempferi Carr., L. olgensis Henrry and L. gmelinii Rupr as male parent, its new growth xylem is more worse. The cross-breed seedling with L. principis-rupprechtii as male parent have better degree of hardiness, and its brooming time is the same as L. sibirica . L. principis-rupprechtii is the first society parent of crossbreed utilization.