This study was conducted to develop a method of treatment with plant growth regulators to enhance the value of a foliage plant, Spathiphyllum wallisii Hort. The plant growth regulators BA and GA3 were applied alone or in combination at different concentration levels. BA treatment was effective in increasing the plant height of S. wallisii Hort. compared with the control. GA3 treatment significantly increased plant height and leaf length compared with those in the control, while the number of leaves decreased. The number of flowers per plant was approximately 1 in the control treatment, while GA3 treatment increased the number of flowers to 5.3–9.3 per plant. The highest number of flowers per plant was 9.3 upon treatment with 300 mg·L-1 BA + 1,000 mg·L-1 GA3. However, GA3 treatment caused physiological disorder. Part of the leaves exhibited white discoloration. This symptom was considered to involve transformation of leaves into flowers on S. wallisii Hort., caused by gibberellin treatment. These results showed that gibberellin treatment was effective in inducing flowering of S. wallisii Hort. The presence of flowers is important for the ornamental value of pot plants. Therefore, gibberellin treatment could improve the ornamental value of S. wallisii Hort. by increasing the number of flowers.

본 연구는 연중 안정적으로 품질이 우수한 장미 삽목묘를 생 산하기 위한 에너지 효율적 실내 번식 조건을 구명하고자 수행 되었다. 스탠다드 장미 ‘Ruby Red’와 스프레이 장미 ‘Red Wing’을 대상으로 단경삽목을 실시하고, 6주간 5가지 LED 광 질(백색 W, 적색 R, 녹색 G, 청색 B, 적색+청색 혼합 RB: 7:3) 을 처리하여 삽목 효율을 조사하였다. 그 결과, 신초 발생은 두 품종 모두 B를 제외한 모든 처리에서 95% 이상으로 양호했고, 발근율은 W와 RB에서 100%였으나, 품종에 따라 R, G, B에서 는 80% 이하로 낮았다. 건중량 비교에서도 두 품종 모두 RB에 서 뿌리와 신초 생장이 가장 우수하였고, B에서 가장 낮았다. 또한 삽목 기간 동안 삽수 잎의 황화 및 낙엽은 RB 처리에서 최소화되었다. 이상의 결과는 RB가 장미 삽목묘의 발근, 신초 생장 및 삽수 잎 유지에 가장 효과적임을 보여주며, 저광도 실내 육묘시스템 적용 가능성을 뒷받침한다.

In this study, we investigated the effects of aging treatment on the physicochemical, mechanical, and barrier properties of edible composite films prepared from shellac (Sh) and cellulose nanofiber (CNF) with different blending ratios. Sh–CNF films (0%, 20%, and 50% CNF) were fabricated and subjected to aging for 7 days at 40°C and 53% relative humidity. Film thickness was found to decline with both CNF incorporation and aging, whereas there were corresponding increases in opacity, particularly in Sh-rich films. In addition, the moisture content and water solubility of films declined at higher CNF ratios, and aging contributed to further reductions in moisture content, although had no significant effects on water solubility. Color analysis revealed that aging promoted the yellowing of pure Sh films, whereas the addition of CNF mitigated these changes. The findings of mechanical analysis revealed that CNF enhanced tensile strength, yield stress, Young’s modulus, and work of break, although reduced elongation at break. Aging contributed to further enhancements of strength and stiffness, along with a reduction in flexibility, although the magnitude of change diminished at higher CNF contents. Furthermore, the findings of gas barrier analysis indicated that CNF was associated with reductions in oxygen permeability, although promoted increases in water vapor permeability, with aging having the opposite effects. Collectively, these findings revealed that the functional properties of Sh–CNF films can be tailored via controlled aging and blending, thereby highlighting the potential utility of these films as edible packaging materials.