Martha Graciela Rocha Munive - Academia.edu (original) (raw)
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Papers by Martha Graciela Rocha Munive
Economic Botany
Oaxaca is one of the areas of early maize diversification, with 28 to 35 recognized agronomic rac... more Oaxaca is one of the areas of early maize diversification, with 28 to 35 recognized agronomic races. Campesinos (farmers) cultivate at least ten different races in the Los Loxicha region. There is evidence of introgression between them; however, some traditional practices have promoted further differentiation evidenced by the presence of different landraces, clearly recognized by various morphological and phenological characteristics. Therefore, moderate levels of genetic diversity and low levels of population differentiation are expected. Seven communities belonging to two municipalities were selected in 2005. In total, 140 semistructured interviews were administered, inquiring about cultural practices, which included questions about maize seed, ear, and cob management and selection and maize cultivation. Based on interviews and permissions, 30 maize plants from each of 28 fields (milpas) with maize crop belonging to five landraces (Conejo, Hueso, Tablita, Tepecente, and Pinto) wer...
Revista Mexicana de Biodiversidad, 2019
Temporal dynamics of detected transgenes in maize landraces in their center of origin Dinámica te... more Temporal dynamics of detected transgenes in maize landraces in their center of origin Dinámica temporal de transgenes detectados en variedades nativas de maíz en su centro de origen
Frontiers in bioengineering and biotechnology, 2018
For more than 20 years cotton has been the most widely sown genetically modified (GM) crop in Mex... more For more than 20 years cotton has been the most widely sown genetically modified (GM) crop in Mexico. Its cultivation has fulfilled all requirements and has gone through the different regulatory stages. During the last 20 years, both research-institutions and biotech-companies have generated scientific and technical information regarding GM cotton cultivation in Mexico. In this work, we collected data in order to analyze the environmental and agronomic effects of the use of GM cotton in Mexico. In 1996, the introduction of Bt cotton made it possible to reactivate this crop, which in previous years was greatly reduced due to pest problems, production costs and environmental concerns. Bt cotton is a widely accepted tool for cotton producers and has proven to be efficient for the control of lepidopteran pests. The economic benefits of its use are variable, and depend on factors such as the international cotton-prices and other costs associated with its inputs. So far, the management st...
Economic Botany
Oaxaca is one of the areas of early maize diversification, with 28 to 35 recognized agronomic rac... more Oaxaca is one of the areas of early maize diversification, with 28 to 35 recognized agronomic races. Campesinos (farmers) cultivate at least ten different races in the Los Loxicha region. There is evidence of introgression between them; however, some traditional practices have promoted further differentiation evidenced by the presence of different landraces, clearly recognized by various morphological and phenological characteristics. Therefore, moderate levels of genetic diversity and low levels of population differentiation are expected. Seven communities belonging to two municipalities were selected in 2005. In total, 140 semistructured interviews were administered, inquiring about cultural practices, which included questions about maize seed, ear, and cob management and selection and maize cultivation. Based on interviews and permissions, 30 maize plants from each of 28 fields (milpas) with maize crop belonging to five landraces (Conejo, Hueso, Tablita, Tepecente, and Pinto) wer...
Revista Mexicana de Biodiversidad, 2019
Temporal dynamics of detected transgenes in maize landraces in their center of origin Dinámica te... more Temporal dynamics of detected transgenes in maize landraces in their center of origin Dinámica temporal de transgenes detectados en variedades nativas de maíz en su centro de origen
Frontiers in bioengineering and biotechnology, 2018
For more than 20 years cotton has been the most widely sown genetically modified (GM) crop in Mex... more For more than 20 years cotton has been the most widely sown genetically modified (GM) crop in Mexico. Its cultivation has fulfilled all requirements and has gone through the different regulatory stages. During the last 20 years, both research-institutions and biotech-companies have generated scientific and technical information regarding GM cotton cultivation in Mexico. In this work, we collected data in order to analyze the environmental and agronomic effects of the use of GM cotton in Mexico. In 1996, the introduction of Bt cotton made it possible to reactivate this crop, which in previous years was greatly reduced due to pest problems, production costs and environmental concerns. Bt cotton is a widely accepted tool for cotton producers and has proven to be efficient for the control of lepidopteran pests. The economic benefits of its use are variable, and depend on factors such as the international cotton-prices and other costs associated with its inputs. So far, the management st...