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Genetics of regeneration of wheat (Triticum aestivum L.) plants
Ana Lúcia Cunha Dornelles; Fernando Irajá Félix de Carvalho; Luiz Carlos Federizzi; Cláudia Erna Lange; Crístine Luíse Handel; Fernanda Bered
Departamento de Plantas de Lavoura, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Caixa Postal 776, 91501-970 Porto Alegre, RS, Brasil. Send correspondence to A.L.C.D.
ABSTRACT
Five genotypes of hexaploid wheat and their Fl hybrids were grown in tissue culture after three different periods of callus maintenance, and were evaluated for plant regeneration capability. Evaluation of the number of regenerated plants per callus showed that this trait is mainly determined by additive gene effects, with high heterotic potential. Plant regeneration capability is relatively easy to select for, especially when this regeneration is obtained after a short period of callus maintenance. Longer periods of callus maintenance led to a considerable reduction in plant regeneration capability in wheat.
Keywords: regeneration; Triticum aestivum.
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