CYTOGENETIC RELATIONSHIPS IN THREE VARIETIES OF Tigridia pavonia (L.f.) DC

Hugo Abelardo Arroyo-Martínez, Amaury Martín Arzate-Fernández, Rodrigo Barba-González, José Luis Piña-Escutia

Abstract


Background: Tigridia pavonia (L.f.) DC is a wild species with great ornamental value, of which nine plant varieties are known. Within the evolutionary process of this species, Penélope has been considered a natural hybrid, product of the cross between the varieties Trinidad and Dulce. Objective: In the present study, the cytogenetic relationships among Trinidad, Dulce and Penélope were analyzed. Methodology: The karyotype of the varieties Trinidad and Penélope was determined through classic cytogenetics and the physical mapping of the genes 5s and 45s rDNA through Fluorescent In Situ Hybridization. Results:  The results showed for the first time the karyotype and the physical mapping of the genes 5s and 45s rDNA in the varieties Trinidad and Penélope. Implications: The information generated can be the basis for future evolutionary analyzes, and / or breeding programs in the species. Conclusion: A higher cytogenetic similarity of Penélope with Trinidad and Dulce has been revealed, suggesting that the latter may be the parents.

Keywords


Tigridia pavonia; natural hybrid; karyotype; Fluorescent In situ Hybridization; B chromosomes.

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URN: http://www.revista.ccba.uady.mx/urn:ISSN:1870-0462-tsaes.v23i3.3297



Copyright (c) 2020 Hugo Abelardo Arroyo Martínez, Amaury Martín Arzate-Fernández, Rodrigo Barba-Gonzalez, José Luis Piña-Escutia

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