Data/hora: 13/06/2024 08:12:18

Biblioteca(s): | Embrapa Agrobiologia; Embrapa Arroz e Feijão.
Data corrente: | 16/09/1993
Data da última atualização: | 24/01/2006
Autoria: | GEPTS, P. L.
Título: | Nutritional and evolutionary implications of phaseolin seed protein variability in common bean (Phaseolus vulgaris L.).
Ano de publicação: | 1984
Fonte/Imprenta: | Madison: University of Wisconsin, 1984.
Páginas: | 209 p.
Idioma: | Inglês
Notas: | Tese Doutorado.
Conteúdo: | the relationship between available methionine concentration and quantitative phaseolin variation was studied in the progenies of crosses involving several genotypes with different levels of phaseolin and/or available methionine, among which were a P. coccineus subsp. coccineus line ("Mexican Red Runner") without detectable phaseolin and a Mexican wild bean accession (PI325690-3) with reduced phaseolin levels. In all the progenies studied, with the exception of those in population 6, higher phaseolin levels led to increased available methionine concentrations, indicating that phaseolin is a major source of available methionine in common bean seeds. In population 6 ("Sanilac"x 15R148), no association was observed between phaseolin and available methionine concentrations, possobly because of the influence of other factors such as additional methionine-rich proteins or seedcoat tannins. Qualitative phaseolin variation among wild and cultived common beans was analyzed using one-dimensional sodium-dodecyl-sulphate polycrylamine gel electrophoresis (SDS/PAGE) and two-dimensional isoeletric focusing SDS/page. Wild beans exhibited a wid variety of phaseolin patterns; "B", "CH", "M", "S", and "T". Landrace cultivars showed the "C", "S", and "T" types described previously, as well as three new patterns: "A", "B", and "H". Cultivars with "B" and "S" phaseolin types generally had smaller seeds than "A", "C", "H", and "T" phaseolin cultivars. The geographic distribuition patterns of the different phaseolin types allowed us.....
Palavras-Chave: | Concentração; Nutrientes; Phaseolina; Variabilidade.
Thesagro: | Feijão; Genética; Phaseolus Vulgaris; Progênie; Proteína; Semente.
Thesaurus Nal: | genetics; kidney beans; nutrients; progeny; proteins; seeds.
Categoria do assunto: | --
Registro original: | Embrapa Arroz e Feijão (CNPAF)

Exemplares:

CNPAF - (1157-1) - ADD - TS - -- - T 016/84 - GEP - 1984.00016 - DIS
CNPAB - (25229-1) - ADD - TS - -- - 635.652 - G353n - 1990.00003 - DIS