DANG VAN DONG et al. (2019). GENETIC DIVERSITY AND GENETIC RELATIONSHIP OF CAMELLIA PLANTS COLLECTED IN VAN GIAN DISTRICT, HUNG YEN PROVINCE, VIETNAM

Dang Van Dong, Mai Thi Ngoan, Phan Ngoc Diep, Nguyen Truong Khoa, Khuat Huu Trung, Tran Dang Khanh (2019). Genetic diversity and genetic relationship of Camellia plants collected in Van Gian district, Hung Yen province, Vietnam. Journal of Scientific and Engineering Research, 2019, 6(10):16-23

Abstract

Camellia is one of the largest genera of flowering plants that belongs to the Theaceae family. In Vietnam, there are numerous species appears to be very similar to many taxa of Camellia which is popularly used as the decorative plants with the high-value property. In this study, twelve Camellia species collected from Hung Yen province were identified based on the ITS1-rRNA-ITS2 sequences. The results showed that the genetic similarity among the samples was ranged from 70.01% to 93.12%. The highest homologous coefficient was 93.12%, whereas the lowest was 70.01%, respectively. The nearest genetic distance was 0.05 and the farthest was 0.29 and divided into 2 main groups with 7 and 5 taxons based on the phylogenetic trees. It suggests that some Camellia samples may derive in the same origin, evolution, and arising relation. This information may be useful for identifying the high-quality genetic plant sources for propagation, development, and conservation of the high-valued materials of Camellia plants in Vietnam.

Keyword: Camellia species, genus, genetic diversity, Theaceae.