Construction of a composite sorghum map and comparison with sugarcane, a related complex polyploid
| Autor: | Laurent Grivet, Claire Lanaud, Philippe Dufour, Angélique D'Hont, Jean-Christophe Glaszmann, Monique Deu, André Bouet, Perla Hamon, Florence Paulet |
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| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
Corrélation génétique
Biology Genome F30 - Génétique et amélioration des plantes Variation génétique Polyploid Genetic linkage Botany Genetics Sorghum Synteny Linkage (software) food and beverages General Medicine biology.organism_classification Saccharum Carte génétique RFLP Restriction fragment length polymorphism Ploidy Agronomy and Crop Science Biotechnology |
| Zdroj: | Theoretical and Applied Genetics |
| Popis: | A sorghum composite linkage map was constructed with two recombinant inbred line populations using heterologous probes already mapped on maize and sugarcane. This map includes 199 loci revealed by 188 probes and distributed on 13 linkage groups. A comparison based on 84 common probes was performed between the sorghum composite map and a map of a sugarcane (Saccharum spp.) cultivar being developed and presently comprising 10 tentative linkage groups. A straight synteny was observed for 2 pairs of linkage groups; in two cases, 1 sorghum linkage group corresponded to 2 or 3 sugarcane linkage groups, respectively; in two cases 1 sugarcane link- age group corresponded to 2 separate sorghum linkage groups; for 2 sorghum linkage groups, no complete correspondance was found in the sugarcane genome. In most cases loci appeared to be colinear between homoeologous chromosomal segments in sorghum and sugarcane. These results are discussed in relation to published data on sorghum genomic maps, with specific reference to the genetic organization of sugarcane cultivars, and they, illustrate how investigations on relatively simple diploid genomes as sorghum will facilitate the mapping of related polyploid species such as sugarcane. |
| Databáze: | OpenAIRE |
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