SciELO - Scientific Electronic Library Online

vol.33 issue4Invasion and establishment of Ceratium furcoides (Dinophyceae) in an urban lake in Porto Alegre, RS, BrazilSynflorescence morphology of species of Typha L. (Typhaceae): anatomical and ontogenetic bases for taxonomic applications author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Acta Botanica Brasilica

Print version ISSN 0102-3306On-line version ISSN 1677-941X


MADER, Geraldo; BACKES, Alice; RECK-KORTMANN, Maikel  and  FREITAS, Loreta B.. Genetic diversity in Calibrachoa pygmaea (Solanaceae): A hawkmoth-pollinated nightshade from the Pampas. Acta Bot. Bras. [online]. 2019, vol.33, n.4, pp.664-671.  Epub Oct 07, 2019. ISSN 0102-3306.

Calibrachoa pygmaea is a unique species of Calibrachoa, especially concerning its flower morphology and the environment where it occurs. The species is self-incompatible and is narrowly distributed in wet and flooded fields of the Pampas region. We characterize the genetic diversity of the species based on traditional plastid markers and newly developed nuclear microsatellites to identify drivers that guide its evolution. Our results identified markers that are informative and useful for studying the population structure of C. pygmaea, as well as that of other species of Calibrachoa. Both marker sets were congruent in developing conclusions regarding the evolutionary scenario of C. pygmaea, and revealed that the genetic variability and population structure of the species could be explained by common allele fixation or shared ancestral polymorphism, while its diversification can be attributed mainly to the species’ dispersal ability and certain ecological features.

Keywords : cross-amplification; gene flow; genetic diversity; plastid haplotypes; population genetics; SSR markers; wild petunias.

        · text in English     · English ( pdf )