Genetic diversity of pseuderanthemum sp. varieties in the Mekong delta based on morphology and SNPS marker

Abstract

Hoan Ngoc is a valuable medicinal plant containing b-sitosterol, triterpenoid saponin, 1-triacontanol, salicylic acid and the flavonoids acacetin, apigenin, kaempferol and high antibacterial activity on gram-negative and gram-positive bacteria and even on molds, yeast. It also supports the treatment of some inflammatory diseases, blood pressure, liver disease, kidney disease, cancer, diarrhea. The study aimed to evaluate the agronomic characteristics of 11 samples of Hoan Ngoc variety based on morphology and combined with molecular biology methods to determine the genetic relationship based on the "rbcL" gene region sequence. Initial results of the evaluation of genetic diversity of 11 Hoan Ngoc samples showed that there were differences from stem length, leaf width to root length. Based on the analysis of results from the family tree, 11 Hoan Ngoc samples can be classified into two main groups. Group I is the cultivars in Bac Lieu (Ho1); Soc Trang (Ho2); and Tien Giang (Ho3); Kien Giang (Ho4); Ca Mau (Ho5); Dong Thap (Ho6); An Giang (Ho7); Tra Vinh (Ho8); Khanh Hoa (Ho9). Group II includes 2 varieties of Can Tho (Ho10); and Hau Giang (Ho11). With molecular biology techniques, 11 varieties of Hoan Ngoc have been identified, all belonging to the species Pseuderanthemum sp. Therefore, it can be applied to wider uses in the pharmaceutical industry.