Machado, Altair Toledo; Machado, Cynthia Torres de Toledo and Nass, Luciano Lourenço (2011) Manejo da diversidade genética e melhoramento participativo de milho em sistemas agroecológicos. [Genetic diversity management and maize participatory breeding under agroecological systems.] Revista Brasileira de Agroecologia, 6 (1), pp. 127-136.
Preview |
PDF
- Published Version
- Portuguese/Portugues
1MB |
Document available online at: http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/article/view/9981/pdf
Summary
Este trabalho avaliou variedades melhoradas de forma convencional e participativa, novas variedades e variedades locais em diferentes ambientes para verificar o seu potencial genético para melhoramento e posterior uso em diferentes agroecossistemas. Os locais de avaliação foram a área experimental da Embrapa Cerrados, considerada um área convencional, Assentamento Cunha considerada de transição agroecológica e com problemas de estresse devido a pouca disponibilidade de fósforo e o Assentamento Colônia II, área considerada agroecológica. Os resultados desses experimentos demonstraram o potencial das variedades melhoradas de forma participativa Eldorado e Fortaleza, das variedades construídas de forma participativa MC 20, MC 50 e MC 60 e da variedade local Aliança com alto potencial de adaptação em ambientes agroecológicos e eficientes na utilização do Nitrogênio e do Fósforo. A estratégia utilizada nesse trabalho com a construção de novas variedades e o melhoramento participativo foram bastante efetivos neste processo de identificação e adaptação.
Summary translation
This work evaluated improved varieties developed by formal and participatory breeding, new varieties, and local varieties under different environments aiming to verify their potential for breeding purposes and utilization under different agroecosystems. Three environments were used: conventional area at Embrapa Cerrados experimental station, Cunha’s settlement considered a transitional agroecological area with low phosphorus availability, and Colonia’s II settlement considered an agroecological area. Our results showed great potential for Eldorado and Fortaleza both developed using participatory breeding. The new varieties MC 20, MC 50, and MC 60 synthesized by participatory approaches and local variety Aliança presented high performance in these environments. All these varieties showed high adaptation under agroecological environments and were highly efficient in nitrogen and phosphorus use. Strategies used to develop new varieties and participatory breeding were high effective to identify varieties well adapted for agroecological systems.
| EPrint Type: | Journal paper |
|---|---|
| Keywords: | Eficiência no uso de nitrogênio, Eficiência no uso de fósforo, Pesquisa participativa, Agricultura familiar. Nitrogen efficiency, Phosphorus efficiency, Family farms |
| Agrovoc keywords: | Language Value URI English agroecology http://aims.fao.org/aos/agrovoc/c_92381 English Nitrogen http://aims.fao.org/aos/agrovoc/c_5192 English Phosphorus http://aims.fao.org/aos/agrovoc/c_5804 English Family farms http://aims.fao.org/aos/agrovoc/c_2787 English participatory approaches http://aims.fao.org/aos/agrovoc/c_9000119 |
| Subjects: | Crop husbandry > Production systems Farming Systems Crop husbandry > Production systems > Cereals, pulses and oilseeds Animal husbandry > Breeding and genetics Crop husbandry > Breeding, genetics and propagation |
| Research affiliation: | Brazil > Embrapa - Brazilian Agricultural Research Corporation |
| ISSN: | 1980-9735 |
| Related Links: | http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/index |
| Deposited By: | Pinto, Gabriela Franco |
| ID Code: | 24142 |
| Deposited On: | 03 Oct 2013 20:14 |
| Last Modified: | 03 Oct 2013 20:14 |
| Document Language: | Portuguese/Portugues |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
Repository Staff Only: item control page
Download Statistics
Download Statistics
