Data/hora: 12/06/2024 12:57:44

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 28/05/1993
Data da última atualização: | 30/03/2023
Autoria: | TORRES, A. M.; SOOST, R. K.; DIEDENHOFEN, U.
Afiliação: | Department of Botany, University of kansas, Lawrence 66045: and Department of Plant Sciences, University of California, Riverside 92521.
Título: | Leaf isozymes as genetic markers in Citrus.
Ano de publicação: | 1978
Fonte/Imprenta: | American Journal of Botany. v.65, N.8, p.869-881. 1978.
Idioma: | Inglês
Conteúdo: | The genetic control fo isozymes from Citrus and its near relatives was determined for three gene/enzyme systems: glutamate oxaloacetate transaminase, phosphoglucose isomerase and phosphoglucose mutase. These enzymes are controlled by four genes having 19 codominant alleles, 12 of which occur in Citrus subg Citrus. Formal genetic studies were carried out with F1 biotypes and F1 populations of known origin. When biotypes were grouped into traditionally recognized species to examine genetic affinities within and between species, a remarkable patterm of uniformity of genotype combinations was found within a species, and every species had an unique combination. Because many economicaly important cultivars produce asexual(nucellar) as well as sexua(zygotic) embryos a central problem of the breeder is to distinguish these when plants are young, long before fruiting. Isozyme markers can be used with varying degrees of efficiency, depending on the genotypes of the particular parents, to distinguish nucellar seedlings from those of zygotic origin.
Palavras-Chave: | Citros; Gens.
Thesagro: | Eletroforese; Melhoramento; Poncirus Trifoliata; Taxonomia.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (15276-1) - ADC - AP - DD - Publicação digital -  -  - DIS