@article{fdi:010042585,
  title = {{N}iger-wide assessment of in situ sorghum genetic diversity with microsatellite markers},
  author = {{D}eu, {M}. and {S}agnard, {F}. and {C}hantereau, {J}. and {C}alatayud, {C}. and {H}{\'e}rault, {D}. and {M}ariac, {C}{\'e}dric and {P}ham, {J}ean-{L}ouis and {V}igouroux, {Y}ves and {K}apran, {I}. and {T}raor{\'e}, {P}. {S}. and {M}amadou, {A}. and {G}{\'e}rard, {B}. and {N}djeunga, {J}. and {B}ezancon, {G}illes},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderstanding the geographical, environmental and social patterns of genetic diversity on different spatial scales is key to the sustainable in situ management of genetic resources. {H}owever, few surveys have been conducted on crop genetic diversity using exhaustive in situ germplasm collections on a country scale and such data are missing for sorghum in sub-{S}aharan {A}frica, its centre of origin. {W}e report here a genetic analysis of 484 sorghum varieties collected in 79 villages evenly distributed across {N}iger, using 28 microsatellite markers. {W}e found a high level of {SSR} diversity in {N}iger. {D}iversity varied between eastern and western {N}iger, and allelic richness was lower in the eastern part of the country. {G}enetic differentiation between botanical races was the first structuring factor ({F}st = 0.19), but the geographical distribution and the ethnic group to which farmers belonged were also significantly associated with genetic diversity partitioning. {G}ene pools are poorly differentiated among climatic zones. {T}he geographical situation of {N}iger, where typical western {A}frican (guinea), central {A}frican (caudatum) and eastern {S}ahelian {A}frican (durra) sorghum races converge, explained the high observed genetic diversity and was responsible for the interactions among the ethnic, geographical and botanical structure revealed in our study. {A}fter correcting for the structure of botanical races, spatial correlation of genetic diversity was still detected within 100 km, which may hint at limited seed exchanges between farmers. {S}orghum domestication history, in relation to the spatial organisation of human societies, is therefore key information for sorghum in situ conservation programs in sub-{S}aharan {A}frica.},
  keywords = {},
  booktitle = {},
  journal = {{T}heoretical and {A}pplied {G}enetics},
  volume = {116},
  numero = {7},
  pages = {903--913},
  ISSN = {0040-5752},
  year = {2008},
  DOI = {10.1007/s00122-008-0721-7},
  URL = {https://www.documentation.ird.fr/hor/fdi:010042585},
}