Validación Empírica De La Teoría Multicéntrica Del Origen Y Diversidad Del Maíz en México

Caballero-García, Marco A.; Córdova-Téllez, Leobigildo; S.I.,, Herrera, Agustín de,

doi:10.35196/rfm.2019.4.357-366

Cited by 10 publications

(14 citation statements)

References 3 publications

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“…In contrast with studies, such as those by the authors of [7], who defined a maize diversity center in Mexico based on the union of genetic richness regions of 54 maize races, and [18], who found 11 biogeographical regions for maize in Mexico when considering 47 maize races, our study analyzed 64 maize races and defined the diversity center as the sum of the georeferenced regions of genetic richness, intraspecific diversity, and centers of origin and domestication of maize described by Kato [38]. This allowed demarcating a spatially larger diversity center, where the diversity of a higher number of maize races was considered.…”

Section: Spatial Delimitation Of the Genetic Richness Regions Per Maize Racementioning

confidence: 68%

“…Around 64 maize races are cultivated in Mexico [4], representing 60% of maize diversity in the world [1]. The importance of maize for the Mexican population has been thoroughly described, from several points of view, as center of origin [5][6][7], center of domestication [8,9], basic food [10], and even as a factor that has allowed the development of ethnic groups [3,11].…”

Section: Introductionmentioning

confidence: 99%

“…The authors of [27,28] suggest that, in order to preserve species diversity, the spatial analysis using Geographic Information Systems (GIS) can be a good tool when different types of spatial and temporal information are connected, as shown in studies about potato [29], papaya [30], manioc [31], and, more recently, maize [3,7,[18][19][20], in particular, when richness and diversity indexes are incorporated that allow demarcating priority areas for the conservation of maize agrodiversity, analyzed from a territorial approach [3]. Due to the simplicity of their calculation and the reliability of their results, the Shannon, Simpson, and Margalef diversity indexes are commonly used in studies on conservation and use of plant genetics resources [28].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the authors of [7,18,19] analyzed the geographical variation of maize diversity in Mexico using indicators of richness and diversity. However, in their studies they did not analyze intraspecific diversity or the relationship of ethnic groups with the territorial diversity of races and specific maize uses.…”

Section: Introductionmentioning

confidence: 99%

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Spatial Delimitation of Genetic Diversity of Native Maize and Its Relationship with Ethnic Groups in Mexico

et al. 2021

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Mexico, as a center of origin of maize, presents a high diversity of maize races. With the objective of spatially demarcating regions with high concentration of intraspecific diversity in Mexico, as a fundamental measure for the in situ conservation of their agrobiodiversity, Geographic Information Systems (GIS) tools have been used to generate diversity and richness indexes for 64 maize races cultivated in Mexico, using indexes to demarcate relationships to environmental factors such as temperature, precipitation, and altitude; the presence of indigenous groups; and the type of maize used. These relations allowed defining seven environmental units spatially, with characteristic maize races in each of them, which constitute priority areas for in situ conservation. In addition, a close relationship was found between the diversity of maize races and of ethnic groups, from the center to the south of the country, associated with the differences in maize use in different ethnic groups. This geographical demarcation of races and uses of maize will favor food security through specific measures of in situ conservation, as well as an increase in added value of maize by-products based on specific maize races conserved by local ethnic groups.

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Section: Spatial Delimitation Of the Genetic Richness Regions Per Maize Racementioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatial Delimitation of Genetic Diversity of Native Maize and Its Relationship with Ethnic Groups in Mexico

et al. 2021

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“…En México se ha estudiado mucho sobre granos básicos; asimismo, el enfoque es muy diverso, por ejemplo, se destaca la autosuficiencia alimentaria, efectos del precio internacional sobre el mercado interno, estudios econométricos, defensa, privatización, origen y diversidad del maíz, análisis institucional sobre semillas de maíz, mercantilización de maíz ante contextos políticos y de cambio climático, respuesta ambiental sobre maíces nativos, entre otros (Caballero-García et al, 2019;Casanova-Pérez et al, 2019;Donnet et al, 2020;García & Giraldo, 2021;Guzmán-Soria et al, 2019).…”

Section: Introductionunclassified

Análisis del Mercado de maíz en México desde una perspectiva de precios

2022

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El maíz es el grano básico más importante en México; a pesar de ello, se importan grandes cantidades para satisfacer el consumo. El presente artículo tuvo como objetivos determinar los factores que afectan el comportamiento del mercado de maíz grano en México, estimar el efecto del precio de garantía sobre la oferta y analizar mediante escenarios el efecto del precio de importación sobre este mercado. Se formuló un modelo de ecuaciones simultáneas empleando datos anuales del mercado de maíz de 1999 a 2020 y se estimó el modelo por mínimos cuadrados en dos etapas (MC2E). Los resultados indican que aumentar el precio de garantía en 37.4% provoca quela producción crezca en 8.38% y que los efectos de aumentar el precio de importación en 20% origina que la producción aumente 2.1% y el consumo se reduzca 5%. Se recomienda realizar sinergia con otros programas de apoyo al agro mexicano para incrementar aún más la producción y de esta manera avanzar en la autosuficiencia alimentaria.

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Morpho-agronomic evaluation of native maize races associated with Mexican tropical climate agroforestry systems

et al. 2022

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Maize (Zea mays L.) is native to Mexico, in which wide genetic diversity can be found; however, maize is at risk of genetic erosion, and agroforestry systems (ASs) can be a strategy for conservation and sustainable use of this crop. The objective of this study was to evaluate the variation in the morpho-agronomic characteristics of three native maize races, Tuxpeño, Olotillo × Tuxpeño and Ratón × Tepecintle, cultivated in different AS in a tropical climate of Veracruz, Mexico, as well as its association with microclimatic conditions. In 2019, experiments were established in the localities La Gloria and La Luisa, Veracruz, where the three maize races are cultivated, in a randomized complete block design with three replications in a 3 × 4 factorial scheme (three native maize races and three AS arrrays, plus monoculture). Ten morpho-agronomic variables were recorded in each experiment and were analyzed by analysis of variance (ANOVA; Tukey’s post-hoc test, all p ≤ 0.05) and principal component analysis (PCA). Six morpho-agronomic characteristics showed significant differences for the race × system interaction. Consistently standing out both in the Myroxylon with 2.8 m × 2.0 arrays and in the monoculture was the Olotillo × Tuxpeño race, as there were no variations (p ≥ 0.05) in 50% of its morpho-agronomic characteristics. The first three PCs explained 87.7% of the cumulative variance, determined by five variables of the ears, three of the grain and plant height, which were associated with temperature; therefore, the microclimatic conditions of the studied ASs are associated with the morpho-agronomic characteristics of the native maize races. The results show that ASs could be a strategy for the conservation and use of native corn germplasm and could allow the diversification of sustainable production for rural farmers.

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Validación Empírica De La Teoría Multicéntrica Del Origen Y Diversidad Del Maíz en México

Cited by 10 publications

References 3 publications

Spatial Delimitation of Genetic Diversity of Native Maize and Its Relationship with Ethnic Groups in Mexico

Spatial Delimitation of Genetic Diversity of Native Maize and Its Relationship with Ethnic Groups in Mexico

Análisis del Mercado de maíz en México desde una perspectiva de precios

Morpho-agronomic evaluation of native maize races associated with Mexican tropical climate agroforestry systems

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