Matches in SemOpenAlex for { <https://semopenalex.org/work/W1843647496> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W1843647496 endingPage "127" @default.
- W1843647496 startingPage "122" @default.
- W1843647496 abstract "The temporal dynamic of rice diversity was assessed in Guinea at the national level for the period 1996-2001 and at a natural regional level for the period 1979-2003. At the national level, 1,697 farms located in 79 villages of the four natural regions of the country were surveyed. The diversity descriptors used were the number of known and cultivated varieties and the Shannon diversity and evenness index. The regional analysis was based on the comparison of samples collected in six villages of Lower Guinea in 1979 and 2003. The varietal and allelic compositions at 10 microsatellite loci served as diversity descriptors. The number of varieties per farmer and per village slightly increased during the 1996-2001 period. Varietal diversity was high, especially in Forest Guinea and Lower Guinea. The rate of varietal use is however low and heterogeneous. Less than 10% of the varieties are cultivated by more than 50% of the farmers of a village. The recent dissemination of short-duration nerica varieties has not caused any reduction of pre-existing varieties as they are complementary to long-duration local varieties. For the 1979-2003 period, the varietal composition in each village evolved substantially. The average number of alleles per locus and per accession was significantly higher in 2003, and the allelic composition of homonymous accessions of the two collection dates was significantly different. However, alleles specific to each collection date had much lower frequencies compared to alleles common to the two collection dates. These results suggest that rice genetic diversity in Guinea has been maintained or even enhanced. However, at the village level, the diversity pattern remains fragile as the proportion of farmers who used all of the village varieties was low and heterogeneous. A continuous monitoring of the dynamics of rice varietal diversity in Guinea is needed." @default.
- W1843647496 created "2016-06-24" @default.
- W1843647496 creator A5013637236 @default.
- W1843647496 creator A5050158740 @default.
- W1843647496 creator A5063586386 @default.
- W1843647496 creator A5074427380 @default.
- W1843647496 date "2008-01-01" @default.
- W1843647496 modified "2023-10-16" @default.
- W1843647496 title "Évolution récente de la diversité génétique des riz cultivés (Oryza sativa et O. glaberrima) en Guinée" @default.
- W1843647496 doi "https://doi.org/10.1684/agr.2008.0167" @default.
- W1843647496 hasPublicationYear "2008" @default.
- W1843647496 type Work @default.
- W1843647496 sameAs 1843647496 @default.
- W1843647496 citedByCount "6" @default.
- W1843647496 countsByYear W18436474962013 @default.
- W1843647496 countsByYear W18436474962017 @default.
- W1843647496 countsByYear W18436474962018 @default.
- W1843647496 countsByYear W18436474962022 @default.
- W1843647496 crossrefType "journal-article" @default.
- W1843647496 hasAuthorship W1843647496A5013637236 @default.
- W1843647496 hasAuthorship W1843647496A5050158740 @default.
- W1843647496 hasAuthorship W1843647496A5063586386 @default.
- W1843647496 hasAuthorship W1843647496A5074427380 @default.
- W1843647496 hasBestOaLocation W18436474961 @default.
- W1843647496 hasConcept C104317684 @default.
- W1843647496 hasConcept C144024400 @default.
- W1843647496 hasConcept C144027150 @default.
- W1843647496 hasConcept C149923435 @default.
- W1843647496 hasConcept C180754005 @default.
- W1843647496 hasConcept C18903297 @default.
- W1843647496 hasConcept C205649164 @default.
- W1843647496 hasConcept C2778543611 @default.
- W1843647496 hasConcept C2908647359 @default.
- W1843647496 hasConcept C30968088 @default.
- W1843647496 hasConcept C53565203 @default.
- W1843647496 hasConcept C54355233 @default.
- W1843647496 hasConcept C59822182 @default.
- W1843647496 hasConcept C61320498 @default.
- W1843647496 hasConcept C81977670 @default.
- W1843647496 hasConcept C86803240 @default.
- W1843647496 hasConceptScore W1843647496C104317684 @default.
- W1843647496 hasConceptScore W1843647496C144024400 @default.
- W1843647496 hasConceptScore W1843647496C144027150 @default.
- W1843647496 hasConceptScore W1843647496C149923435 @default.
- W1843647496 hasConceptScore W1843647496C180754005 @default.
- W1843647496 hasConceptScore W1843647496C18903297 @default.
- W1843647496 hasConceptScore W1843647496C205649164 @default.
- W1843647496 hasConceptScore W1843647496C2778543611 @default.
- W1843647496 hasConceptScore W1843647496C2908647359 @default.
- W1843647496 hasConceptScore W1843647496C30968088 @default.
- W1843647496 hasConceptScore W1843647496C53565203 @default.
- W1843647496 hasConceptScore W1843647496C54355233 @default.
- W1843647496 hasConceptScore W1843647496C59822182 @default.
- W1843647496 hasConceptScore W1843647496C61320498 @default.
- W1843647496 hasConceptScore W1843647496C81977670 @default.
- W1843647496 hasConceptScore W1843647496C86803240 @default.
- W1843647496 hasIssue "2" @default.
- W1843647496 hasLocation W18436474961 @default.
- W1843647496 hasLocation W18436474962 @default.
- W1843647496 hasOpenAccess W1843647496 @default.
- W1843647496 hasPrimaryLocation W18436474961 @default.
- W1843647496 hasRelatedWork W1470240229 @default.
- W1843647496 hasRelatedWork W1867112638 @default.
- W1843647496 hasRelatedWork W1964573301 @default.
- W1843647496 hasRelatedWork W2200045371 @default.
- W1843647496 hasRelatedWork W2352675633 @default.
- W1843647496 hasRelatedWork W2366873566 @default.
- W1843647496 hasRelatedWork W2387481283 @default.
- W1843647496 hasRelatedWork W2560431690 @default.
- W1843647496 hasRelatedWork W2748414200 @default.
- W1843647496 hasRelatedWork W339480875 @default.
- W1843647496 hasVolume "17" @default.
- W1843647496 isParatext "false" @default.
- W1843647496 isRetracted "false" @default.
- W1843647496 magId "1843647496" @default.
- W1843647496 workType "article" @default.