@article{fdi:010042600,
  title = {{A}nalyse multi{\'e}chelle de la diversit{\'e} g{\'e}n{\'e}tique des sorghos : compr{\'e}hension des processus {\'e}volutifs pour la conservation in situ = {M}ulti-scale analysis of sorghum genetic diversity : understanding the evolutionary processes for in situ conservation},
  author = {{S}agnard, {F}. and {B}arnaud, {A}. and {D}eu, {M}. and {B}arro, {C}. and {L}uce, {C}. and {B}illot, {C}. and {R}ami, {J}. {F}. and {B}ouchet, {S}. and {D}embele, {D}. and {P}omies, {V}. and {C}alatayud, {C}. and {R}ivallan, {R}. and {J}oly, {H}. and {B}rocke, {K}. {V}. and {T}oure, {A}. and {C}hantereau, {J}. and {B}ezancon, {G}illes and {V}aksmann, {M}.},
  editor = {},
  language = {{FRE}},
  abstract = {{U}sing microsatellite genetic markers, we analyzed 1,518 sorghum samples collected at different spatial scales in {B}urkina {F}aso, {M}ali, {N}iger, and in the village of {W}ante, from the landrace to the country scale. {G}enetic diversity and differentiation parameters were estimated to assess the effects of the main evolutionary processes on sorghum genetic diversity. {T}he genetic variability found within a variety is mainly the result of the sorghum reproduction biology and the genetic drift process caused by the limited number of reproductive individuals at the time of variety introduction into a household or each year when farmers select their seeds. {A}t the village scale, a low correlation is observed between the diversity of vernacular names and the genetic diversity assessed by microsatellites. {N}o spatial genetic structuration is observed among villages more than 30 kilometers apart. {T}his point highlightss that traditional seed systems operate at a very local scale. in {M}ali, a similar proportion of allelic richness is observed along a longitudinal transect and a latitudinal gradient that crosses a larger range of agroclimatic conditions. {A}t the country scale, sorghum exhibits more genetic diversity in {N}iger than in {M}ali despite a lower agroclimatic range in {N}iger. {T}hese results demonstrate that the diversity of human groups acts together with the agro-ecological factors to shape the structure of sorghum genetic diversity. {A}n important proportion of the overall genetic diversity present in the {C}irad ({C}entre de cooperation internationale en recherche agronomique pour le developpement) "core collection" is found in {M}ali and {N}iger. {T}he tremendous diversity cultivated by farmers in traditional agroecosystems of {W}estern {A}frica supports the relevance of in situ approaches for sorghum conservation programs in this region. {B}oth conservation and crop improvement requirements can be achieved through a better use of local germplasm in decentralized breeding programs.},
  keywords = {genetic markets ; genetic ressources ; resource conservation ; sorghum grain ; {W}est {A}frica},
  booktitle = {},
  journal = {{C}ahiers {A}gricultures},
  volume = {17},
  numero = {2},
  pages = {114--121},
  ISSN = {1166-7699},
  year = {2008},
  DOI = {10.1684/agr.2008.0180},
  URL = {https://www.documentation.ird.fr/hor/fdi:010042600},
}