Use of Molecular Markers to Assist the Development of Inbred Lines under Open Field Conditions: the Case of Criollo Peppers (Capsicum annuum L.) from Mexico

Chile peppers are one of the most important crops in Mexico and a plethora of ecotypes can be found there. Most of them are ancient open-pollinated (OP) landraces selected by farmers for uniform phenotype but with an inherent level of genetic diversity, called criollos. In this work 15 pepper access...

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Published inNotulae botanicae Horti agrobotanici Cluj-Napoca Vol. 45; no. 2; pp. 365 - 368
Main Authors PEREIRA-DIAS, Leandro, CHÁVEZ-GONZÁLEZ, Gustavo, BRACHO-GIL, Miguel, FITA, Ana M., VILANOVA, Santiago, LUNA-RUIZ, José J., PÉREZ-CABRERA, Laura Eugenia, ARREDONDO-FIGUEROA, José Luis, RODRÍGUEZ-BURRUEZO, Adrián
Format Journal Article
LanguageEnglish
Published Cluj-Napoca Notulae Botanicae Horti Agrobotanici Cluj-Napoca 01.01.2017
Subjects
Agronomy
Capsicum annuum
Climate change
Cultivars
Ecotypes
Genetic diversity
Heterozygosity
Inbreeding
Markers
Parents
Peppers
Phenotypes
Pollination
Mexico
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Summary:Chile peppers are one of the most important crops in Mexico and a plethora of ecotypes can be found there. Most of them are ancient open-pollinated (OP) landraces selected by farmers for uniform phenotype but with an inherent level of genetic diversity, called criollos. In this work 15 pepper accessions, encompassing 2 criollo lines, their open-pollinated progenies, and 5 controls, were characterized with a set of 36 IPGRI descriptors and 23 SSR markers to assess the effect of open pollination in the inbreeding process. Heterozygosity levels were comprised between 12 and 47% in the progenies, which were similar or lower than those values from parent plants and similar or higher than control cultivars. Also, both progenies and parents showed similar levels of agronomic and morphological uniformity. Our results suggest that this OP program is efficient in terms of reaching enough agronomic uniformity in criollo Ancho peppers while preserving certain genetic diversity to confer adaptation to climate change.
ISSN:0255-965X
1842-4309
DOI:10.15835/nbha45210940