Data/hora: 01/06/2024 03:49:30

Biblioteca(s): | Embrapa Milho e Sorgo.
Tipo da produção científica: | Artigo em Anais de Congresso
Data corrente: | 16/09/1998
Data da última atualização: | 13/07/2018
Autoria: | BAHIA FILHO, A. F. C.; MAGNAVACA, R.; SCHAFFERT, R. E.; ALVES, V. M. C.
Afiliação: | EMBRAPA/CNPMS; ROBERT EUGENE SCHAFFERT, CNPMS; VERA MARIA CARVALHO ALVES, CNPMS.
Título: | Identification, utilization, and economic impact of maize germplasm tolerant to low levels of phosphorus and toxic levels of exchangeable aluminum in Brazilian soils.
Ano de publicação: | 1997
Fonte/Imprenta: | In: INTERNATIONAL SYMPOSIUM ON PLANT SOIL INTERACTIONS AT LOW pH, 4., 1996, Belo Horizonte. Proceedings... Campinas: SBCS, 1997. p. 59-70.
Idioma: | Inglês
Conteúdo: | A historical review of research and development related to the identification, utilization and economic impact of maize germplasm adapted to acid soils a EMBRAPA/CNPMS is presented. Methods to identify tolerant germplasm and to select segregation materials, through field experiments in acid and fertile soils and screening in nutrient solution are discussed. Results of research including inheritance for aluminum tolerance and development of high yielding tolerant hybrds are presented. Also, results of phosphorus efficiency related to root development of high yielding tolerant hybrids are presented. Also, results of phosphorus efficiency related to root development, internal accumulation of P and kinetics of absorption of P and N are discussed. The experience accumulated in this research program has shown that adaptation to acid soils can be associated, in the same genotype with high yield potential and yield stability, as a result of tolerance to Al toxicity and improved P use efficiency. This program has generated several commercial cultivars which have been successfully utilized in a large area of Brazil. The knowledge and experimental germplasm generated are also valuable resources which are being used to support basic studies of mechanisms of tolerance to aluminum and nutrient use efficiency. A better understanding of these mechanisms will help the development of better strategies for selection and improved cultivars in the future.
Palavras-Chave: | Aluminium; Efficiency; Eficiencia; Maize; Tolerance; Tolerancia.
Thesagro: | Alumínio; Fósforo; Germoplasma; Milho; Solo Ácido; Zea Mays.
Thesaurus Nal: | acid soils; germplasm; phosphorus.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (9142-1) - UPC - AA - DD -  -  -  - DIS