Data/hora: 03/06/2024 08:03:30

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 18/07/1995
Data da última atualização: | 18/07/1995
Autoria: | ORTIZ, R.; VUYLSTEKE, D. R.
Afiliação: | International Institute of tropical Agriculture, Ibadan, Nigeria.
Título: | Inheritance of Albinism in Banana and plantin (Musa spp.) and its Significance in breeding.
Ano de publicação: | 1994
Fonte/Imprenta: | Hort Science v.29, n.8, p.903-905, 1994.
Idioma: | Inglês
Conteúdo: | Few genetic markers are available in Musa spp. as a result of a lack of inheritance studies. Full-sid diploid (2n = 2x = 22) plantain-banana hybrids of the International Institute of tropical Agriculture were selfed or outcrossed with other diploid bananas, one of which is an improved selection from Central America. Three populations having albinos(complete lack of chlorophyll in any plant tissue) were produced. The segregation ratios for albinism suggested that this deleterious trait is controlled by one or two recessive alleles. The small sample sizes (a problem inherent in the low reproductive fertility of cultivated parthenocarpic Musa) in two of these three populations did not allow for   conclusiveness between the one or two genes model. However, a distinction was possible with the third population, consisting of 64 seedlings, of wchich four were albinos.
Palavras-Chave: | Phenotypic recurrent selection; Recessive deleterious alleles.
Thesaurus Nal: | embryo culture.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (15717-1) - ADC - SP - -- -  -  - S5760 - DIS