Evaluation of maize core collection for drought tolerance.
AUTOR(ES)
TEIXEIRA, F. F.
FONTE
Crop Breeding and Applied Biotechnology
DATA DE PUBLICAÇÃO
2011
RESUMO
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.
ASSUNTO(S)
milho melhoramento genético vegetal zea mays
ACESSO AO ARTIGO
http://www.alice.cnptia.embrapa.br/handle/doc/880306Documentos Relacionados
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