적단심계 무궁화 품종간 교배차대묘의 엽특성 변이

Abstract

- This study was performed to provide basic information of the development and breeding of new cultivars ofHibiscus syriacusL., which have more beautiful and diverse flowers. Morphological characteristics of the leaves andgenetic variation of the leaves of two Jeoktanshim-line cultivars, Bulsae and Pyungsung, were crossed each other. Theresult of the cross between Bulsae and Pyungsung are as follows: Mean leaf length and width were 6.09cm and 3.36cm,respectively. Mean petiole length was 1.08cm, and mean shoulder width and incision depth were 1.50cm and 0.84cm,respectively. Mean leaf base angle was 98.56. Leaf index and petiole length were the most important components ofleaf characteristics. Two groups were clustered in distance level 5.4. The result of the cross between Pyungsung andBulsae are as follows: Mean leaf length and width were 5.25cm and 3.10cm, respectively. Mean petiole length was0.87cm, and mean shoulder width and incision depth were 1.50cm and 0.76cm, respectively. Mean leaf base angle was107.87, which was the widest among ten cross combinations. Two groups were clustered with seven leaf characteristicsin distance level 4.2. Group I included two small groups, and group II included four small groups.Key words -Breeding, Hibiscus syriacus, Jeoktanshim, Leaf characteristic, Cultivar- 151 -