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Increasing the resistance of common bean to white mold through recurrent selection
Provedor de dados: 63
Autores: Leite,Monik Evelin; Dias,Juliana Andrade; Souza,Danuza Araujo de; Alves,Filipe Couto; Pinheiro,Lucas Rezende; Santos,João Bosco dos.
ABSTRACT White mold, caused by Sclerotinea sclerotiorum (Lib.) de Bary is one of the most important diseases of the common bean (Phaseolus vulgaris L.) worldwide. Physiological resistance and traits related to disease avoidance such as architecture contribute to field resistance. The aim of this study was to verify the efficiency of recurrent selection in physiological resistance to white mold, “Carioca” grain type and upright habit in common bean. Thirteen common bean lines with partial resistance to white mold were intercrossed by means of a circulant diallel table, and seven recurrent selection cycles were obtained. Of these cycles, progenies of the S0:1, S0:2 and S0:3 generations of cycles III, IV, V and VI were evaluated. The best (8 to 10) progenies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sclerotinia sclerotiorum; Phaseolus vulgaris; Genetic resistance; Genetic progress.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000100071

Accuracy and simultaneous selection gains for N-stress tolerance and N-use efficiency in maize tropical lines
Provedor de dados: 63
Autores: Mendonça,Leandro de Freitas; Granato,Ítalo Stefanine Correia; Alves,Filipe Couto; Morais,Pedro Patric Pinho; Vidotti,Miriam Suzane; Fritsche-Neto,Roberto.
ABSTRACT Maize plants can be N-use efficient or N-stress tolerant. The first have high yields in favorable environments but is drastically affected under stress conditions; whereas the second show satisfactory yields in stressful environments but only moderate ones under optimal conditions. In this context, our aim was to assess the possibility of selecting tropical maize lines that are simultaneously N-stress tolerant and N-use efficient and check for differences between simultaneous selection statistical methods. Sixty-four tropical maize lines were evaluated for Nitrogen Agronomic Efficiency (NAE) and Low Nitrogen Tolerance (LNTI) response indices and two per se selection indices, Low Nitrogen Agronomic Efficiency (LNAE) and Harmonic Mean of Relative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic stress; Correlation between traits; Winter maize; Mixed models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000600481