Author: ABDELLAH.. BENABDELMOUNA
Publisher:
ISBN:
Category :
Languages : fr
Pages : 120
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Book Description
UNE METHODOLOGIE DE MARQUAGE DU GENOME PAR HYBRIDATION IN SITU FLUORESCENTE (FISH) A ETE DEVELOPPEE CHEZ PETUNIA HYBRIDA. LES ANALYSES CYTOMETRIQUES ONT MONTRE QUE LA COMPOSITION EN BASES (AT%) EST CONSTANTE (AT% = 59.3%) ALORS QUE LA TAILLE DU GENOME (VALEURS 2C) VARIE D'UN FACTEUR TROIS ET PERMET DE DISTINGUER ENTRE P. PARVIFLORA (2N = 18, 2C = 1.96 PG), P. LINEARIS (2N = 18, 2C = 5.79 PG) ET LES AUTRES ESPECES ETUDIEES (2N = 14, 2C = 2.84 PG). L'HYBRIDATION IN SITU GENOMIQUE (GISH) OU COLORIAGE CHROMOSOMIQUE A PERMIS D'OBTENIR, CHEZ P. HYBRIDA ET CHEZ UN HYBRIDE INTERSPECIFIQUE F1, UN PATTERN D'HYBRIDATION EN BANDES QUI POURRAIT CORRESPONDRE AUX SEQUENCES MICROSATELLITES. LES REGIONS CHROMOSOMIQUES CONSERVEES ENTRE LES ESPECES ETUDIEES ONT EGALEMENT ETE DETERMINEES. L'ETUDE, PAR PCR, DE LA VARIATION INTERSPECIFIQUE DE L'ESPACEUR DE L'ADNR 5S A PERMIS DE DETECTER DEUX UNITES DE REPETITION : UNE UNITE DE REPETITION DE 460 PB CHEZ P. LINEARIS (2N=18) ET P. INTEGRIFOLIA (2N=14), ET UNE UNITE DE REPETITION DE 350 PB CHEZ LES AUTRES ESPECES (2N=14). L'ORGANISATION CHROMOSOMIQUE DES GENES 5S A PERMIS DE DISTINGUER UN GROUPE D'ESPECES A FLEURS COLOREES AVEC UN LOCUS 5S ADJACENT AU LOCUS MAJEUR 18S-5.8S-25S DU CHROMOSOME II ET UN GROUPE D'ESPECES A FLEURS BLANCHES AVEC UN LOCUS ADDITIONNEL SITUE DANS LA REGION PERICENTROMERIQUE DU CHROMOSOME VII. LES OBSERVATIONS FISH ONT REVELE UN LOCUS D'ADNR 18S-5.8S-25S CHEZ P. LINEARIS ET P. PARVIFLORA (2N=18) ET DEUX LOCI CHEZ LES ESPECES DE PETUNIA (2N = 14). ENFIN, LA LOCALISATION PHYSIQUE DE 11 MARQUEURS RAPD ISSUS DE LA CARTE GENETIQUE DE P. HYBRIDA A ETE REALISEE. LES RESULTATS OBTENUS PAR FISH ET PAR HYBRIDATION SOUTHERN ONT MONTRE QUE LA MAJORITE DES CLONES RAPD NE SONT PAS SPECIFIQUES. ILS SONT HAUTEMENT REPETES ET POURRAIENT CORRESPONDRE A DES FAMILLES MULTILOCUS. SEULEMENT TROIS CLONES RAPD ONT REVELE UNE SPECIFICITE AU NIVEAU CHROMOSOMIQUE : OPJ18-250 ET OPV20-350 POUR LES ESPECES A FLEURS BLANCHES ET OPV08-600 POUR LES ESPECES A FLEURS COLOREES MONTRANT AINSI LA POSSIBILITE DE LES UTILISER COMME MARQUEURS D'INTROGRESSION.
Author:
Publisher:
ISBN:
Category : Livestock
Languages : en
Pages : 972
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Book Description
Author: Melvin DePamphilis
Publisher: Garland Science
ISBN: 1136738231
Category : Science
Languages : en
Pages : 476
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Book Description
Genome Duplication provides a comprehensive and readable overview of the underlying principles that govern genome duplication in all forms of life, from the simplest cell to the most complex multicellular organism. Using examples from the three domains of life - bacteria, archaea, and eukarya - Genome Duplication shows how all living organisms store their genome as DNA and how they all use the same evolutionary-conserved mechanism to duplicate it: semi-conservative DNA replication by the replication fork. The text shows how the replication fork determines where organisms begin genome duplication, how they produce a complete copy of their genome each time a cell divides, and how they link genome duplication to cell division. Genome Duplication explains how mistakes in genome duplication are associated with genetic disorders and cancer, and how understanding genome duplication, its regulation, and how the mechanisms differ between different forms of life, is critical to the understanding and treatment of human disease.
Author: Margaret Llewelyn
Publisher: Bloomsbury Publishing
ISBN: 1847312721
Category : Law
Languages : en
Pages : 578
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Book Description
This authoritative new work analyses European plant intellectual property rights. Whilst the focus of the work is on Europe, and in particular the European Patent Convention, the Council Regulation on Community Plant Variety Rights and the EU Directive on the Legal Protection of Biotechnological Inventions, these provisions are discussed within the context of international legislation, including the Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPs) and the Convention on Biological Diversity. It is the first book to look at the impact of plant intellectual property rights on the European plant breeding industry and assess whether recent developments, such as the Novartis decision, will assist plant breeders, from all sectors of plant breeding activities, in the production of new plant products. In addition to a thorough discussion of the legislation, the book includes unique empirical research results obtained by the authors as part of a two-year research project funded by the European Union, which surveyed attitudes towards, and use of, plant intellectual property rights within the European plant breeding community.
Author: M. Kalk
Publisher: Springer Science & Business Media
ISBN: 9400995946
Category : Science
Languages : en
Pages : 444
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Book Description
Leonard C. Beadle In contrast to the more sta bie oceans, inland waters are, on the geological time scale, short-lived and are subject to great fluctuations in chemical composition and physical features. Very few lakes and rivers have existed continuously for more than a million years, and the life of the majority is to be measured in thousands or less. Earth movements, erosion and long-term climatic changes in the past have caused many of them to appear and disappear. No wonder then that most freshwater organism are especially adapted to great changes and many even to temporary extinction of their environment. Recent studies of residual sediments from existing and extinct lakes in tropical Africa have told us much about their age and the past history of their faunas and floras, from which we may deduce something about the climate and the conditions in the water in the past. The forces that have formed and moulded the African Great Lakes have been catastrophic in their violence and effects. They are not yet finished, but the present rate of change is, in human terms, too slow for direct observation of the ecological effects. The large man-made lakes are providing very good opportunities for studying the chemi cal and biological consequences of the initial filling but, once filled, they are artificially protected against major fluctuations.
Author: Oscar Grillo
Publisher: BoD – Books on Demand
ISBN: 9533077727
Category : Science
Languages : en
Pages : 380
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Book Description
Driven by the increasing necessity to define the biological diversity frame of widespread, endemic and threatened species, as well as by the stimulating chance to describe new species, the study of the evolutive and spatial dynamics is in constant execution. Systematic overviews, biogeographic and phylogenic backgrounds, species composition and distribution in restricted areas are focal topics of the 15 interesting independent chapters collected in this book, chosen to offer to the reader an overall view of the present condition in which our planet is.
Author: Kenneth Giles
Publisher: Springer Science & Business Media
ISBN: 1468443798
Category : Science
Languages : en
Pages : 485
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Book Description
The current and potential importance of plant tissue culture techniques in crop improvement is hard to overemphasize. There are few areas where these techniques will have more possible im pact than in tropical agriculture, where the availability of high productivity varieties is sadly lacking in many species. The potential for the rapid, clonal propagation of elite individuals and the use of controlled multiline planting could have a major effect on crop yield and disease resistance in many areas of the world. This volume is a collection of papers presented at the Con ference on "Crop Improvement Through Tissue Culture", held at the Base Institute, Calcutta, India in December 1981. It attempts to bring together local research workers, familiar with the agri cultural resources of the area and tissue culture and molecular 4 level workers. It was the hope of the conference that the "cross fertilization" of ideas would lead to new approaches and activity in this area. The editors trust that this collection of papers will stimu~ late interest and research in the tissue culture and improvement of crop plants everywhere. v ACKNOWLEDGEMENTS The symposium from which the papers in this book are drawn was held at Bose Institute, Calcutta on December 6 to December 10, 1981.
Author: Jakob Reinert
Publisher: Springer Science & Business Media
ISBN: 3662022796
Category : Science
Languages : en
Pages : 810
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Book Description
Progress in the field of plant cell and tissue culture has made this area of research one of the most dynamic and promising not only in plant physiology, cell biology and genetics but also in agriculture, forestry, horticulture and industry. Studies with plant cell cultures clearly have bearing upon a variety of problems as yet unsolved in basic and applied research. This was the compelling reason for assembling such a comprehensive source of information to stimulate students, teachers, and research workers. This book comprises 34 articles on regeneration of plants, vegetative propagation and cloning; haploids; cytology, cytogenetics and plant breeding; protoplasts, somatic hybridization and genetic engineering; plant pathology; secondary products and a chapter on isoenzymes, radiobiology, and cryobiology of plant cells. Particular attention has been paid to modern , fast-growing and fascinating disciplines - e.g. the induction of haploids, somatic hybridization and genetic manipulation by protoplast culture, which possess an enormous potential for plant improvement.
Author: Leendert Pijl
Publisher: University of Miami Press
ISBN:
Category : Gardening
Languages : en
Pages : 232
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Book Description
Orchidaceae.
Author: Robert L. Dressler
Publisher:
ISBN: 9780674875265
Category : Science
Languages : en
Pages : 332
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Book Description
Looks at the structure, classification, evolution, and ecology of orchids, including the methods they have developed to manipulate pollinating insects
