무궁화의 새 品種에 對한 調査

A Report of Scientific Researches in New Cultivated Varieties of Hibiscus syriacus L.

Phenotypic selection for color, induction of mutation and hybridization were done to get new cultivated varieties of Hibiscus syriacus. Chromosome number and characteristics of flowers and leaves were observed with 17 varieties for their originalities. The results obtained were as follows: 1. Among eleven varieties with single petal flower, five varieties (Gwangmyeong Mugunghwa, Gwangbok Mugunghwa, Deokan Mugunghwa, Asanyeo Mugunghwa, Haneol Mugunghwa) showed tetraploid, two varieties (Cheonsa Mugunghwa, Saemaum Mugunghwa) hybridity in H. syr. var. discoideus and four varieties (Giybin Mugunghwa, Saeron Mugunghwa, Iseul Mugunghwa, Hansaem Mugunghwa) uncertain their originality. 2. Among four varieties with semidouble petal flower, three varieties (Dongja Mugunghwa, Neulbeot Mugunghwa, Mojeong Mugunghwa) showed hybridity in H. syr. var. discoideus and one variety (Saieol Mugunghwa) showed tetraploid. 3. Among two varieties with double petal flower, one variety (Hanmaum Mugunghwa) was tetraploid and the other (Saegyeob Mugunghwa) was hybrid of variety with double petal flower.