Data/hora: 16/06/2024 04:36:05

Biblioteca(s): | Embrapa Soja.
Data corrente: | 06/04/2004
Data da última atualização: | 27/07/2007
Autoria: | OYA, T.; NEPOMUCENO, A. L.; NEUMAIER, N.; FARIAS, J, R, B.; TOBITA, S.; ITO, O.
Título: | Evaluation and characterization of drought tolerance among brazilian soybean cultivars in the field.
Ano de publicação: | 2004
Fonte/Imprenta: | In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004.
Páginas: | p. 185.
Série: | (Embrapa Soja. Documentos, 228).
Idioma: | Inglês
Notas: | Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.
Conteúdo: | Drought is one of the major constraints for soybean production in Brazil. Drought stress treatments with rain-out shelters were applied for one month period after the first flowering to evaluate drought tolerance of ten Brazilian soybean cultivars based on seed yield over two growing seasons in the field of Embrapa Soybean in Londrina, PR, Brazil. Drought stress reduced seed yield. Cultivar differences in drought tolerance on the basis of seed yield were found, and the yield ranking among cultivars was fairly stable across two years. Cultivars with higher drought tolerance had a characteristic to maintain their crop growth rate (CGR) higher during the drought stress period compared to other cultivars. They also maintained larger leaf area during the stress period. Reproductive development was retarded by the drought stress, however, the cultivars with higher tolerance tended to retard less. The information obtained in this research can be used for breeding drought-tolerant cultivars or selecting the diverse germplasm of soybean cultivars.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (23729-1) - UMT - PL - -- - RF 633.34072 - W927a -  - DIS