Data/hora: 11/06/2024 09:04:47

Provedor de dados: | Genetics and Molecular Biology
País: | Brazil
Título: | Genetic analysis of reciprocal differences in the inheritance of in vitro characters in pearl millet
Autores: | Satyavathi,Valluri V; Manga,V.; Rao,Muktinutalapati V. Subba; Chittibabu,Malladi.
Data: | 2016-03-01
Ano: | 2016
Palavras-chave: | Cytoplasmic inheritance; D2 dwarf; In vitro regeneration; Pearl millet; Reciprocal differences.
Resumo: | Abstract Reciprocal differences persist in nature because of the unequal contribution of cytoplasmic determinants from male and female gametes to the zygote. The inheritance of genetic differences is an important factor that influences various traits, including somatic embryogenesis and regeneration in vitro. In this report, we estimate the cytoplasmic and maternal effects in pearl millet and their adequacy in describing the observed reciprocal differences based on an in depth study of the parents, F2s and reciprocal backcross progenies needed for fitting genetical models. Our study revealed that of the two characters examined, embryogenic callus quantity and regeneration frequency, the former showed a greater proportion of cytoplasmic nuclear interaction whereas the latter showed a greater role of nuclear factors. Additive-maternal effects influenced total callus quantity and dominance-maternal effects influenced total callus quantity, embryogenic callus quantity and regeneration frequency. Dwarfing was associated with the production of large quantities of embryogenic callus that had visually recognizable characteristics. The phenotypic nature of dwarf parents (green dwarf with long narrow leaves) with a genetic basis for a given character controlled by nuclear and cytoplasmic determinants can be exploited for other breeding programs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000100054
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/1678-4685-GMB-2014-0380
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.39 n.1 2016
Fonte: | info:eu-repo/semantics/openAccess