Genetic variation within three populations of Phycella australis (Phil.) Ravenna from Biobío Region, Chile, evaluated using ISSR markers
2013
Phycella australis (Phil.) Ravenna is a Chilean plant with high
ornamental potential; however, the intensive extraction as a cut flower
might be detrimental for the conservational state by ignoring the state
of genetic variation. The objective of this investigation was to assess
genetic variability within and between three populations of P.
australis in the Biobio Region using inter-simple sequence repeat
(ISSR) markers. The evaluated areas correspond to three locations in
the province of Concepcion, Biobio Region: Desembocadura
(36°48’ S, 73°10’ W), Santa Juana
(36°58’ S, 72°58’ W), and Lipinhue
(37°00’ S, 72°58’ W). Six ISSR primers were used
obtaining 51 fragments, from which 72.5% were polymorphic. From the
three evaluated sites Santa Juana showed a higher percentage of
polymorphic loci (76.47%). From this variability, 83% belong to within
population variability and only 17% belong to variability between
populations. The dendrogram generated using the unweighted pair group
method with arithmetic mean (UPGMA) method, grouped Lipinhue and Santa
Juana sites together, which agrees with the geographic locations. This
investigation proved that P. australis has high genetic variability
despite the exploitation for economic purposes.
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