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No. de sistema: 000058995

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008 _ _ 180831m20189999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
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245 0 0 a| Evolutionary and food supply implications of ongoing maize domestication by Mexican campesinos
506 _ _ a| Disponible para usuarios de ECOSUR con su clave de acceso
520 1 _ a| Maize evolution under domestication is a process that continues today. Case studies suggest that Mexican smallholder family farmers, known as campesinos, contribute importantly to this, but their significance has not been explicitly quantified and analysed as a whole. Here, we examine the evolutionary and food security implications of the scale and scope under which campesinos produce maize. We gathered official municipal-level data on maize production under rainfed conditions and identified campesino agriculture as occurring in municipalities with average yields of less than or equal to 3 t ha-¹. Environmental conditions vary widely in those municipalities and are associated with a great diversity of maize races, representing 85.3% of native maize samples collected in the country. We estimate that in those municipalities, around 1.38 10¹¹ genetically different individual plants are subjected to evolution under domestication each season. This implies that 5.24 108 mother plants contribute to the next generation with their standing genetic diversity and rare alleles. Such a large breeding population size also increases the total number of adaptive mutations that may appear and be selected for. We also estimate that campesino agriculture could potentially feed around 54.7 million people in Mexico. These analyses provide insights about the contributions of smallholder agriculture around the world.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Maíz
650 _ 4 a| Productividad agrícola
650 _ 4 a| Seguridad alimenticia
650 _ 4 a| Variación genética
650 _ 4 a| Explotación agrícola en pequeña escala
650 _ 4 a| Factores ambientales
651 _ 4 a| México
700 1 _ a| Bellon Corrales, Mauricio Rafael
n| 7003901842
700 1 _ a| Mastretta Yanes, Alicia
e| coaut.
700 1 _ a| Ponce Mendoza, Alejandro
e| coaut.
n| 7801331613
700 1 _ a| Ortiz Santamaría, Daniel
e| coaut.
700 1 _ a| Oliveros Galindo, Oswaldo
e| coaut.
700 1 _ a| Perales Rivera, Hugo Rafael
c| Dr.
e| coaut.
n| 6506611468
700 1 _ a| Acevedo, Francisca
e| coaut.
700 1 _ a| Sarukhán Kermez, José
c| Dr.
d| 1940-
e| coaut.
773 0 _
t| Proceedings of the Royal Society B: Biological Sciences
g| Vol. 285, no. 1885 (August 2018), p. 48-57
x| 0962-8452
900 _ _ a| Solicítelo con su bibliotecario/a
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Agosto 2018
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
906 _ _ a| Producción Académica ECOSUR
LNG eng
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*Solicítelo con su bibliotecario/a
Evolutionary and food supply implications of ongoing maize domestication by Mexican campesinos
Bellon Corrales, Mauricio Rafael (autor)
Mastretta Yanes, Alicia (autor)
Ponce Mendoza, Alejandro (autor)
Ortiz Santamaría, Daniel (autor)
Oliveros Galindo, Oswaldo (autor)
Perales Rivera, Hugo Rafael (autor)
Acevedo, Francisca (autor)
Sarukhán Kermez, José, 1940- (autor)
Nota: Disponible para usuarios de ECOSUR con su clave de acceso
Contenido en: Proceedings of the Royal Society B: Biological Sciences. Vol. 285, no. 1885 (August 2018), p. 48-57. ISSN: 0962-8452
No. de sistema: 58995
Tipo: - Artículo con arbitraje
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Inglés

"Maize evolution under domestication is a process that continues today. Case studies suggest that Mexican smallholder family farmers, known as campesinos, contribute importantly to this, but their significance has not been explicitly quantified and analysed as a whole. Here, we examine the evolutionary and food security implications of the scale and scope under which campesinos produce maize. We gathered official municipal-level data on maize production under rainfed conditions and identified campesino agriculture as occurring in municipalities with average yields of less than or equal to 3 t ha-¹. Environmental conditions vary widely in those municipalities and are associated with a great diversity of maize races, representing 85.3% of native maize samples collected in the country. We estimate that in those municipalities, around 1.38 10¹¹ genetically different individual plants are subjected to evolution under domestication each season. This implies that 5.24 108 mother plants contribute to the next generation with their standing genetic diversity and rare alleles. Such a large breeding population size also increases the total number of adaptive mutations that may appear and be selected for. We also estimate that campesino agriculture could potentially feed around 54.7 million people in Mexico. These analyses provide insights about the contributions of smallholder agriculture around the world."


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