Titlebook: Systems for Cytogenetic Analysis in Vicia Faba L.; Proceedings of a Sem G. P. Chapman,S. A. Tarawali Conference proceedings 1984 ECSC, EEC,

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Cytogenetics and Breeding: An IntroductionIn the major crop plants there is now emerging ‘molecular cytogenetics’. This is not merely the association of a gene with a chromosome region but an ambitious and increasingly successful attempt to relate gene function to development. Where resources are more abundant, progress tends to be more rapid as in the cereals, for example.

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Standards Employed in Distinctness, Uniformity and Stability Tests of Faba Bean CultivarsWhen a new faba bean cultivar is entered for a grant of Plant Breeders’ Rights or for listing on the EEC Common Catalogue of cultivars it must be tested for distinctness, uniformity and stability (DUS). The standards operated in DUS tests in the U.K. are described.

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Chromosome Manipulations area of enquiry to plant species and to develop a series of appropriately modified techniques for handling plant chromosomes. In this laboratory the chromosomes of . have provided the starting material, the resulting techniques then being extended to chromosomes of other species, notably in the genera ., . and ..

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C-Banding in , Speciesationships and seek to apply them to resolve the origin and evolutionary history of .. Chromosomes of six species of Vicia were examined including four accessions of .. Details of banding are illustrated and two hypotheses considered to explain the evolution of the . karyotype.

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Development of a Model System to Explore Genome Divergence in the Vicieaeed. For a given hybrid, embryogenesis will fail at a relatively early or late stage depending on the similarity of the parents. This paper uses these features of hybridisation in . as a basis upon which to develop, eventually, the molecular biology of both differentiation and genome divergence.

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