Publication: Chromosome number in meiotic stage cells and pollen viability of Vanhouttea hilariana Chautems, Vanhouttea brueggeri Chautems and an interespecific hybrid (Gesneriaceae)
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Date
2011
Authors
Perantoni Fuchs, María Cecilia ; De Sousa, Saulo Marçal ; Sanmartin-Gajardo, Ivonne ; Facio Viccini, Lyderson
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Publisher
Murcia : Universidad de Murcia, Servicio de Publicaciones
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Vanhouttea (Gesneriaceae) is a genus from Brazilian rock mountains.
Two species, Vanhouttea hilariana Chautems and Vanhouttea brueggeri
Chautems, are very similar, differentiated just by the calyx morphology.
The hypothesis of hybridization between these species was suggested
by many authors mainly by the observation of individuals in the
populations with intermediate morphology. The aim of this work was to
determine the chromosome number and to evaluate the meiosis behavior
and pollen viability of these two species and the putative hybrid.
The analyses of the putative parental and hybrid revealed that all individuals
have 2n=26 and a normal meiosis behavior. Nevertheless, although
the pollen grains of possible parental has been viable, it was
observed around 92.87% of unviable pollen from all putative hybrids
analyzed which reinforce the hypothesis of hybridization between V.
hilariana and V. brueggeri.
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