@article{fdi:010053045,
  title = {{S}tability across environments of the coffee variety near infrared spectral signature},
  author = {{P}osada, {H}. and {F}errand, {M}. and {D}avrieux, {F}. and {L}ashermes, {P}hilippe and {B}ertrand, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}revious study on food plants has shown that near infrared ({NIR}) spectral methods seem effective for authenticating coffee varieties. {W}e confirm that result, but also show that inter-variety differences are not stable from one harvest to the next. {W}e put forward the hypothesis that the spectral signature is affected by environmental factors. {T}he purpose of this study was to find a way of reducing this environmental variance to increase the method's reliability and to enable practical application in breeding. {S}pectral collections were obtained from ground green coffee samples from multi-location trials. {T}wo harvests of bean samples from 11 homozygous introgressed lines, and the cv '{C}aturra' as the control, supplied from three different sites, were compared. {F}or each site, squared {E}uclidean distances among the 12 varieties were estimated from the {NIR} spectra. {M}atrix correlation coefficients were assessed by the {M}antel test. {W}e obtained very good stability (high correlations) for intervariety differences across the sites when using the two harvests data. {I}f only the most heritable zones of the spectrum were used, there was a marked improvement in the efficiency of the method. {T}his improvement was achieved by treating the spectrum as succession of phenotypic variables, each resulting from an environmental and genetic effect. {H}eritabilities were calculated with confidence intervals. {A} near infrared spectroscopy signature, acquired over a set of harvests, can therefore effectively characterize a coffee variety. {W}e indicated how this typical signature can be used in breeding to assist in selection.},
  keywords = {{NIRS} ; coffee ; heritability ; chemometric ; selection},
  booktitle = {},
  journal = {{H}eredity},
  volume = {102},
  numero = {2},
  pages = {113--119},
  ISSN = {0018-067{X}},
  year = {2009},
  DOI = {10.1038/hdy.2008.88},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053045},
}