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Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

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RESULTS AND DISCUSSIONSPhylogenetic tree resultThe aligned rbcL comprises 905 characters. Ofthese, 807 characters are constant and 72 arepotentially parsimony informative. From themost parsimony tree (MPTs), consistency index(CI) is 0,889 and retention index (RI) is 0,962.The values showed that all characters areimportant in constructing tree and RI revealthat homoplasy is very small.Phylogenetic tree as shown in figure 1, it wasconstructed with maximum parsimony methodand bootstrap 1000x. Neighbourjoining (NJ)method is also done to show difference ofgenetic distance and analyze similaritysequence among samples.Phylogenetic analysis MangiferaPhylogenetic analysis from the tree hadrevealed the important answer about theancestor trait. It is monophyletic tree with fourmain groups. The first group consists of twospecies from Thailand which are M.macrocarpa (Thailand) and M. cochincinensis.Group II consist of M. indica, M. caesia, M.aplanata, and M. altisima. Group III consist ofM.longipes, M. laurina, M. similis, and M.macrocarpa. Group IV consist of mix samplesfrom Thailand and Indonesia, such as M.laurina (Thailand), M. sp, M. kasturi, M.foetida, and M. odorata.The result reveal that two species of Mangiferafrom Thailand grouped in one but other species(M. laurina) join to Indonesian Mangifera. Thegroup systems show some differences withclassification system made by Kostermans andBompard (1993).Monophyletic character of Mangifera ancestortrait based on rbcL gene shows the same resultwith ITS (Yonemori et al., 2001) and matK(Hidyat et al., 2011) with different DNAsequences. Overall results of Mangiferaancestor are monophyletic. The monophyleticancestor of Mangifera is supported by characterof stomata (Hidayat et al, 2009). Therefore, theconsequence for the ancestor is agree withMukherjee (1953), that said Mangifera comefrom one origin and divided into three species.That is M.duperreana as root of section I, M.lagenifera and M.macrocarpa as root of sectionII. That species are the oldest among all speciesof Mangifera.Phylogenetic analysis also shows biogeographyrelationship of Mangifera. It can be seen fromthe diversification of same species, which istaken from difference land with long distance.Phylogenetic pattern among species also giveinformation in species status and taxonomyimplication in genus Mangifera.Figure 1. One of the most parsimony tree with bootstrap 1000x. The number on the node is Bootstrap value in%.237

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