삽목시기, 삽목용토, 생장조절제에 따른 상동나무 삽목발근 특성

Rooting Characteristics of Sageretia thea by Cutting Time, Rooting Medium and Plant Growth Regulators

This study was conducted to determine the three main factors [rooting time, plant growth regulators (PGRs), rooting medium] of cuttage for mass production of Sageretia thea. The experiment was observed on cuttage tray after 120 days and classified by rooting times, plant growth regulators, rooting medium. Materials were collected from natural habitats of S. thea from the Korean peninsula at March, July and September during 2019. As a result of the experiment, rooting times were showed statistically significant differences. March group's rooting rate and root length were 15 and 200% better than others. In PGRs experiment by concentration, There was no significant correlation between the control and experiment in terms of rooting rate. However, In the case of root length, IBA 500 ㎎/L, IBA 250 ㎎/L and IAA 1,000 ㎎/L groups were lengthened up to 170% compared to the control group, confirming statistically significant differences. As a result, we recommend treating cuttings with IBA 500 ㎎/L in March with Hardwood cutting.