@article{fdi:010022311,
  title = {{A}ssessment of genetic diversity in three subsets constituted from the {ICRISAT} sorghum collection using random vs non-random sampling procedures : {A}. {U}sing morpho-agronomical and passport data},
  author = {{G}renier, {C}. and {B}ramel-{C}ox, {P}.{J}. and {N}oirot, {M}ichel and {P}rasada {R}ao, {K}.{E}. and {H}amon, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} large collection, such as sorghum (#{S}orghum bicolor$ ({L}.) {M}oench) landrace collection held at the {I}nternational {C}rops {R}esearch {I}nstitute for the {S}emi-{A}rid {T}ropics ({ICRISAT}), represents a challenge for the maintenance of both the accessions of and the information documented for the germplasm collection. {T}he accessibility and knowledge of the landrace collection are the essential factors for an efficient utilization of the genetic resources by both breeders and farmers. {D}ifferent sampling strategies, either random or non-random, were proposed to obtain subsets of reduced size (core collection). {T}hree subsets were established ; a random sampling within a stratified collection (logarithmic strategy : {L}) ; a sample based upon morpho-agronomic diversity (principal component score strategy : {PCS}) ; and a sample based upon an empirical knowledge of sorghum (taxonomic strategy : {T}). {C}omparisons of these three samples for morpho-agronomic characterization and passport information were assessed to determine their impact on phenotypic diversity. {F}or their overall diversity, the three subsets did not differ, as shown with the two-dimensional representation of the morpho-agronomic diversity and the {S}hannon-{W}eaver diversity indices. {W}hen comparisons for morpho-agronomic and passport data were considered, the {PCS} subset looked similar to the entire landrace collection. {T}he {L} subset showed differences for characters associated with the photoperiod reaction that was considered in the stratification of the collection. {T}he {T} subset was the most distinct from the entire landrace collection as it over-represented the landraces selected by farmers for specific uses and covered the widest range of geographical adaptation and morpho-agronomic characteristics. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{SORGHO} ; {COLLECTION} {BOTANIQUE} ; {CONSERVATION} {DES} {RESSOURCES} {GENETIQUES} ; {DIVERSITE} {GENETIQUE} ; {METHODE} {D}'{ANALYSE} ; {ECHANTILLONNAGE} ; {MARQUEUR} {MOLECULAIRE} ; {ETUDE} {EXPERIMENTALE} ; {DIVERSITE} {MORPHOAGRONOMIQUE} ; {ZONE} {SEMIARIDE}},
  booktitle = {},
  journal = {{T}heoretical and {A}pplied {G}enetics},
  volume = {101},
  numero = {1-2},
  pages = {190--196},
  ISSN = {0040-5752},
  year = {2000},
  DOI = {10.1007/s001220051468},
  URL = {https://www.documentation.ird.fr/hor/fdi:010022311},
}