Genetic diversity of squash landraces (Cucurbita maxima) collected in Andean Valleys of Argentina

Squash landraces (Cucurbita maxima) are maintained by small farmers as a major nutritional food. Twenty seven of these landraces were collected in Argentinian Andean Valleys and morphologically characterized. Genetic diversity was evaluated with microsatellite markers designed for Cucurbita pepo an...

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Autores principales: Lorello, Inés María, García Lampasona, Sandra Claudia, Peralta, Iris Edith
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Facultad de Ciencias Agrarias-UNCuyo 2020
Materias:
Marcadores microsatélites
diversidad genética
bancos de germoplasma
recursos genéticos
zapallo
Cucurbita maxima
Microsatellite markers
genetic diversity
germplasm banks
genetic resources
squash landraces
Acceso en línea:https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3033
Aporte de:
Revista de la Facultad de Ciencias Agrarias UNCuyo de Universidad Nacional de Cuyo
id I11-R107article-3033
record_format ojs
institution Universidad Nacional de Cuyo
institution_str I-11
repository_str R-107
container_title_str Revista de la Facultad de Ciencias Agrarias UNCuyo
language Inglés
format Artículo revista
topic Marcadores microsatélites
diversidad genética
bancos de germoplasma
recursos genéticos
zapallo
Cucurbita maxima
Microsatellite markers
genetic diversity
germplasm banks
genetic resources
squash landraces
Cucurbita maxima
spellingShingle Marcadores microsatélites
diversidad genética
bancos de germoplasma
recursos genéticos
zapallo
Cucurbita maxima
Microsatellite markers
genetic diversity
germplasm banks
genetic resources
squash landraces
Cucurbita maxima
Lorello, Inés María
García Lampasona, Sandra Claudia
Peralta, Iris Edith
Genetic diversity of squash landraces (Cucurbita maxima) collected in Andean Valleys of Argentina
topic_facet Marcadores microsatélites
diversidad genética
bancos de germoplasma
recursos genéticos
zapallo
Cucurbita maxima
Microsatellite markers
genetic diversity
germplasm banks
genetic resources
squash landraces
Cucurbita maxima
author Lorello, Inés María
García Lampasona, Sandra Claudia
Peralta, Iris Edith
author_facet Lorello, Inés María
García Lampasona, Sandra Claudia
Peralta, Iris Edith
author_sort Lorello, Inés María
title Genetic diversity of squash landraces (Cucurbita maxima) collected in Andean Valleys of Argentina
title_short Genetic diversity of squash landraces (Cucurbita maxima) collected in Andean Valleys of Argentina
title_full Genetic diversity of squash landraces (Cucurbita maxima) collected in Andean Valleys of Argentina
title_fullStr Genetic diversity of squash landraces (Cucurbita maxima) collected in Andean Valleys of Argentina
title_full_unstemmed Genetic diversity of squash landraces (Cucurbita maxima) collected in Andean Valleys of Argentina
title_sort genetic diversity of squash landraces (cucurbita maxima) collected in andean valleys of argentina
description Squash landraces (Cucurbita maxima) are maintained by small farmers as a major nutritional food. Twenty seven of these landraces were collected in Argentinian Andean Valleys and morphologically characterized. Genetic diversity was evaluated with microsatellite markers designed for Cucurbita pepo and Cucumis melo and evaluated for the first time in C. maxima. Seven microsatellite primers detected 26 alleles with 3.10 average alleles per locus. The Genetic Diversity reached an average of 0.26; a Polymorphic Information Content (PIC) of 0.20 and 45.5% of polymorphic loci. Higher diversity was found at intra population level. No evidence of lineal correlation between the observed diversity and the geographical distribution of squash landraces was found. Results demonstrate a moderate genetic diversity for all populations, with a wide range of variation in different groups. A subgroup of 10 populations with the highest levels of genetic diversity was considered for maintenance within core collections in the Vegetable Crop Germplasm Bank of Agricultural Research Station (EEA) La Consulta, Mendoza, National Institute of Agricultural Technology (INTA). Anthropogenic and environmental processes, mainly abandonment of cultivated areas and frequent droughts could erode squash landraces diversity. Conservational strategies and new collecting expeditions can be decided based on the genetic diversity found. Highlights Argentinean squashe's landraces from different Andean environments were characterized for the first time by molecular markers. A technique was developed to generate the amplification products, and to detect useful markers for the conservation of C. maxima genetic resources in germplasm banks. Diversification strategies of food production and seed exchange are deeply rooted in Andean culture, which contributes to the intrapopulation diversity observed. Catamarca and Jujuy were the Provinces with the greatest genetic diversity for cultivated squashes. The great morphological diversity observed would be the result of species adaptation to Andean heterogeneous ecological environments, and anthropic selection.
publisher Facultad de Ciencias Agrarias-UNCuyo
publishDate 2020
url https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3033
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first_indexed 2022-06-20T13:52:20Z
last_indexed 2022-06-20T13:52:20Z
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