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CONICET Digital
Article . 2015
License: CC BY NC SA
Data sources: CONICET Digital
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Qualidade polínica, anormalidades meióticas e poliploidia em Sisyrinchium commutatum Klatt (Iridaceae)

Authors: Avila Jr., Rubem Samuel de; Urdampilleta, Juan Domingo; Gil, A. S. Bragança;

Qualidade polínica, anormalidades meióticas e poliploidia em Sisyrinchium commutatum Klatt (Iridaceae)

Abstract

O comportamento meiótico de Sisyrinchium commutatum (Iridaceae) foi avaliado e associado com as altas taxas de inviabilidae polínica observada em uma população do sudeste do Brasil. Além disso, pela primeira vez, descreve-se o número cromossômico desta espécie, contribuindo assim para a sistemática do grupo. Alguns aspectos da biologia floral são relatados , como a ocorrência de apresentação secundária de pólen e a ausência de autopolinização espontânea e apomixia para esta espécie. Os resultados do presente trabalho confirmam a ação das anormalidades meióticas como possível mecanismo disruptivo na formação de grãos-de-pólen com consequências ao sucesso reprodutivo na população estudada .

The meiotic behaviour of Sisyrinchium commutatum (Iridaceae) was studied and associated to the pollen quality observed in a southeastern population in Brazil. For the first time, the chromosome number is reported for this species (2n = 36). Some traits of floral biology were recorded and secondary pollen presentation as well as the absence of autonomous self-fertilization and apomixy were observed. The results of this study confirm the abnormalities in the meiosis process breaking the pollen grain formation with consequences to reproductive success in the studied population.

Fil: Urdampilleta, Juan Domingo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina

Fil: Avila Jr., Rubem Samuel de. Universidade Federal do Pampa; Brasil

Fil: Gil, A. S. Bragança. Museu Paraense Emílio Goeldi; Argentina

Country
Argentina
Keywords

CITOGENÉTICA, SISYRINCHIUM COMMUTATUM, https://purl.org/becyt/ford/1.6, POLEN, BIOLOGÍA REPRODUCTIVA, https://purl.org/becyt/ford/1

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green