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Analysis of Genetic Diversity on Medicinal Plants
of
Codonopsis javanica (Blume) Hook. f. using RAPD-PCR
Technique Towards
Conservation
and Plant Breeding in Vietnam
Pham Thanh Huyen
1
, Dinh Doan Long
2
1
National Institute of Medicinal Materials, Ministry of Health, 3B Quang Trung, Hanoi, Vietnam
2
VNU School of Medicine and Pharmacy, 144 Xuan Thuy, Cau Giay, Hanoi, Vietnam
Abstract: This study was subjected to assess
the genetic diversity of Condonopsis javanica
(Blume) Hook f. germplasm in Vietnam for the purposes of conservation and its breeding for planting
expansion. Samples of 15 natural and cultivated accessions were collected throughout the country with
two major areas of distribution in Northwest Highlands (Lao Cai,
Ha Giang, Son La) and Western
Highlands (Lam Dong, Kon Tum). DNA of 15 accessions were isolated and amplified by 12 arbitrary
primers. A total of 106 RAPD-PCR loci were detected, among which 88 loci (83%) were
polymorphic, whereas the other 18 (17%) were homogeneous for all the collected accessions. The
cluster analysis showed that 15 accessions were divided into 2 obviously distinct groups. One
consisted of 5 accessions collected in Northwest highlands, while the other consisted of 10 remaining
accessions collected in West highlands. Thus, RAPD-PCR results indicated that there was abundant
genetic diversity amongst natural
and cultivated population of C. javanica in Vietnam and their
genetic relationship appeared to be related to their geographic distance. Thus, germplasms at
geographic distance should be subjected to the conservation and breeding programs of this medicinal
plant species.
Keywords: Condonopsis javanica, RAPD-PCR,
genetic diversity, geographic distance.