종자파종과 삽목을 활용한 희귀식물 주걱댕강나무의 증식 특성

Propagation Characteristics of Rare Plants Diabelia spathulata (Siebold & Zucc.) Landrein Applied by Seeding and Cutting Methods

The purpose of this study was to identify the propagation characteristics of Diabelia spathulata (Siebold & Zucc.) Landrein through seeding and cutting methods. The seed germination rate was meager (0.22~3.56%). In hardwood cutting, the highest rooting rate was 36.1% in sand + perlite (2:1) and 37.8% in 1000 ㏙ of IBA pre-treatment. Softwood cutting showed the highest rooting rate when the cutting diameter was 3 to 5 ㎜ and the cutting length was 7 to 8 ㎝. In particular, the highest rooting rate of 80% was observed in the sand among the 8 cultivation media treatments. In the case of root cuttings, the rooting rate was 83.3~96.7% in all cultivation media. The highest rooting rate was observed when the diameter of the cutting was 7 to 8 ㎜, and the length of the cutting was about 10 to 11 ㎝. Among cutting methods, root cutting showed the highest rooting rate. Division showed a 100% rooting rate regardless of size or growth status. For Diabelia spathulata (Siebold & Zucc.) Landrein, propagation by cuttings was more efficient than seeding. However, Further research on the morphophysiological dormancy and dormancy break of seeds is needed for seed propagation.