소나무 母數園 造成을 爲限 接木不和合性 防除에 관한 硏究 = The Methods for Overcoming the Graft Incompatibility on the Pine Seed Orchard

다국어 초록 (Multilingual Abstract)

As an attempts to overcome the graft incompatibility in the pines seed orchards. Three kinds of auxin (IBA, GA and 2.4-D) were treated on the grafted seedling, and air-layering at the swollen part on the graft union area was also investigated. The observations were made on the percentage of graft incompatibility in the intra- and inter species, the appearance of swollen parts at graft union area, the symptom of scion overgrowth, the development of suberin zone in meristemic tissue and in wound-xylem tissue and rooting ability on tile air-layering.
The results obtained are summarized as follows.
1. Grafts made within species were more likely successful than those made between species. The stocks of black pine of older graft union to those of younger age. In the korean pine, however, the age effect on the formation of graft union was negligible.
2. The major response on graft incompatibility to gibberellic acid seems to be on decrease in the development of swollen at graft union area, overgrowth of scion and suberin zone in the meristem tissue and wound-xylem tissue.
3. High rooting ability was demonstrated fly the air-layering taken from the swollen parts of graft union treated with 120㎎/ℓ of IBA.