Evaluation of maize core collection for drought tolerance.
2010
TEIXEIRA, F. F. | GOMIDE, R. L. | ALBUQUERQUE, P. E. P. de | ANDRADE, C. de L. T. de | LEITE, C. E. P. | PARENTONI, S. N. | GUIMARAES, P. E. de O. | GUIMARAES, L. J. M. | SILVA, A. R. | BASTOS, E. A. | CARDOSO, M. J. | FLAVIA FRANCA TEIXEIRA, CNPMS; REINALDO LUCIO GOMIDE, CNPMS; PAULO EMILIO PEREIRA DE ALBUQUERQUE, CNPMS; CAMILO DE LELIS TEIXEIRA DE ANDRADE, CNPMS; CARLOS EDUARDO DO PRADO LEITE, CNPMS; SIDNEY NETTO PARENTONI, CNPMS; PAULO EVARISTO DE O GUIMARAES, CNPMS; LAURO JOSE MOREIRA GUIMARAES, CNPMS; ADELMO RESENDE DA SILVA, CNPMS; EDSON ALVES BASTOS, CPAMN; MILTON JOSE CARDOSO, CPAMN.
The maize genebank (GBmaize) preserves nearly 4,000 accessions for conservation and use. The use is however restricted because the accessions do not performs as well as the elite genotypes. This problem can be reduced by pre-breeding, i. e., by extending the information on germplasm and introgressing useful alleles. Since irregular rainfall distribution and drought induce maize yield losses, drought tolerance is a man breeding target. In this study, the GBmaize accessions were evaluated for drought tolerance. Environmental factors, genotypes and the respective interactions influence the phenotypic expression. There was however no interaction genotype-irrigation level, so no accessions with different performance under the two water regimes could be identified. The performance of the following accessions was promising for a number of traits: SP154, BA166, MG099, CE002, SE025, BA154, BA194, BA085, MG076, PRO053, Roxo Macapá, SE016, and AL018.
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