Data/hora: 01/06/2024 02:48:16

Provedor de dados: | 54
País: | Brazil
Título: | Genetics of resistance to the fungus Helminthosporium sativum in wheat: use of culture filtrates in tissue culture
Autores: | Barbieri,Rosa Lía; Carvalho,Fernando Irajá Félix de; Dornelles,Ana Lúcia Cunha; Cristaldo,Rosa Maria de Luján Oviedo de; Handel,Cristine Luise.
Data: | 1997-09-01
Ano: | 1997
Resumo: | Six wheat genotypes and their F1 and F2 generations were exposed to the action of Helminthosporium sativum culture filtrates to examine the genetics of hexaploid wheat resistance. The objective was to improve the efficiency of breeding programs by identifying the action and number of genes involved in the resistance. The varied response of the tested genotypes to the culture filtrates allowed division of the genotypes into four groups: resistant, moderately resistant, moderately susceptible and susceptible. This variability was detected in the progeny, suggesting that the parents have distinct genetic constitutions. Additive gene action predominated and genetic gain was shown to be possible through selection. The genetic control of the resistance trait seems to be complex because of the presence of gene interaction and the difficulty of eliminating the environmental effects. The inheritance seems to be oligogenic
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300019
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S0100-84551997000300019
Formato: | text/html
Fonte: | Brazilian Journal of Genetics  v.20 n.3 1997
Fonte: | info:eu-repo/semantics/openAccess