Data/hora: 01/06/2024 04:51:16

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 19/08/2005
Data da última atualização: | 06/11/2006
Autoria: | FERREIRA, F. M.; BARBOSA, M. H. P.; CASTRO, R. D. de; PETERNELLI, L. A.; CRUZ, C. D.
Título: | Effects of inbreeding on the selection of sugar cane clones.
Ano de publicação: | 2005
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 5, n. 2, p. 174-182, June 2005.
Idioma: | Inglês
Conteúdo: | The effects of inbreeding and selection of sugarcane clones in families obtained through biparental crossings, polycrossings and selfings (S1) were evaluated in Minas Gerais, Brazil, in 1999-2000. The families were represented in 89 clones and evaluated at the plant cane and ratoon stages. Inbreeding depression in sugarcane was expressive for the trait tonnes of brix per hectare (TBH), tonnes of stalks per hectare (TSH), length, diameter and mean stalk weight, except for brix and number of stalks. The inbreeding influence on the traits TBH and TSH showed that selfing was not indicated for clone selection for commercial purposes, due to the high genetic load in the clones evaluated for yield per hectare. On the other hand, it was possible to select some productive inbred clones, suggesting an alternative form of using S1 clones as parents in the process of reciprocal recurrent selection.
Palavras-Chave: | Cana-de-açúcar; Depressão endogâmica; Sugar cane breeding.
Thesagro: | Melhoramento.
Thesaurus Nal: | inbreeding depression; Saccharum.
Categoria do assunto: | --
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (22904-1) - ADD - AP - -- - 631.05 - C - 2005.00377 - DIS