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各种间和种内品种的砧木对火炬松接穗的存活率及生长和开花的状况有明显的影响。8种硬质松(其中包括同胞和半同胞系)用作砧木。日本赤松砧木提高了砧穗体的存活率和开花量,但降低了生长量,它在嫁接后头几年内表现为理想的建园材料,但几年后开花状况表现一般。北美二针松用于生产性种子园时,表现为有发展前途的,因为它提高了雄、雌花的开花量。在同胞和半同胞火炬松砧木中,种内和种间的变化几乎一样。
The rootstocks of various species and species have significant effects on the survival rate of scallop scion and the growth and flowering status. Eight kinds of hardy pine (including siblings and half-sibs) were used as rootstocks. Japanese Pinus densiflora increased the survival rate and flowering rate of the scion body, but decreased the growth rate. It was an ideal material for garden building in the first few years after grafting, but the flowering performance was normal after a few years. Pinus armandii for productive seed orchard, the performance of promising, because it increases the flowering male and female flowers. Among compatriots and half-breed loblolly pine rootstocks, intraspecific and interspecific changes were almost the same.