@article{fdi:010061926,
  title = {{I}nfluence of ethnolinguistic diversity on the sorghum genetic patterns in subsistence farming systems in {E}astern {K}enya},
  author = {{L}abeyrie, {V}. and {D}eu, {M}. and {B}arnaud, {A}deline and {C}alatayud, {C}. and {B}uiron, {M}. and {W}ambugu, {P}. and {M}anel, {S}. and {G}laszmann, {J}. {C}. and {L}eclerc, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderstanding the effects of actions undertaken by human societies on crop evolution processes is a major challenge for the conservation of genetic resources. {T}his study investigated the mechanisms whereby social boundaries associated with patterns of ethnolinguistic diversity have influenced the on-farm distribution of sorghum diversity. {S}ocial boundaries limit the diffusion of planting material, practices and knowledge, thus shaping crop diversity in situ. {T}o assess the effect of social boundaries, this study was conducted in the contact zone between the {C}huka, {M}beere and {T}haraka ethnolinguistic groups in eastern {K}enya. {S}orghum varieties were inventoried and samples collected in 130 households. {I}n all, 297 individual plants derived from seeds collected under sixteen variety names were characterized using a set of 18 {SSR} molecular markers and 15 morphological descriptors. {T}he genetic structure was investigated using both a {B}ayesian assignment method and distance-based clustering. {P}rincipal {C}oordinates {A}nalysis was used to describe the structure of the morphological diversity of the panicles. {T}he distribution of the varieties and the main genetic clusters across ethnolinguistic groups was described using a non-parametric {MANOVA} and pairwise {F}isher tests. {T}he spatial distribution of landrace names and the overall genetic spatial patterns were significantly correlated with ethnolinguistic partition. {H}owever, the genetic structure inferred from molecular makers did not discriminate the short-cycle landraces despite their morphological distinctness. {T}he cases of two improved varieties highlighted possible fates of improved materials. {T}he most recent one was often given the name of local landraces. {T}he second one, that was introduced a dozen years ago, displays traces of admixture with local landraces with differential intensity among ethnic groups. {T}he patterns of congruence or discordance between the nomenclature of farmers' varieties and the structure of both genetic and morphological diversity highlight the effects of the social organization of communities on the diffusion of seed, practices, and variety nomenclature.},
  keywords = {{KENYA}},
  booktitle = {},
  journal = {{P}los {O}ne},
  volume = {9},
  numero = {3},
  pages = {e92178},
  ISSN = {1932-6203},
  year = {2014},
  DOI = {10.1371/journal.pone.0092178},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061926},
}