@article{fdi:010061806,
  title = {{P}lant growth dynamics and root morphology of little-known species of {C}henopodium from contrasted {A}ndean habitats},
  author = {{A}lvarez-{F}lores, {R}. and {W}inkel, {T}hierry and {D}egueldre, {D}. and {D}el {C}astillo, {C}. and {J}offre, {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}lant morphology determines the access to soil resources, a feature crucial for early growth in annual species. {P}lant growth and root traits in little-known species of {A}ndean chenopods were compared with the hypothesis that plants from low-resource habitats show traits that enhance resource capture. {T}hree cultivated {C}henopodium populations (two populations of the tetraploid {C}henopodium quinoa {W}illd., one population of the diploid {C}henopodium pallidicaule {A}ellen) and one population of their wild tetraploid relative {C}henopodium hircinum {S}chrad. were grown in pots under nonlimiting conditions over nine weeks of early vegetative growth. {A}ll populations followed the same sequence of biomass allocation and showed similar maximal values of shoot and root relative growth rates ({RGR}). {P}opulation differences in plant biomass, net assimilation rate, total root length, and specific root length were associated with seed mass ranking and species ploidy level. {C}henopodium quinoa produced less branched stems and maintained high root {RGR} for a longer time than the other two species, and the {C}. quinoa population from low-resource habitat showed a faster main root growth. {T}hese results show that {C}. pallidicaule developed a plant growth syndrome adapted to cold, high-altitude habitats, while {C}. quinoa from low-resource habitats showed an improved capacity to explore soil at depth in early growth stages.},
  keywords = {biomass allocation ; phenotypic variation ; plant growth analysis ; root growth ; root morphology ; wild and cultivated species ; {BOLIVIE} ; {CHILI} ; {ANDES}},
  booktitle = {},
  journal = {{B}otany. {B}otanique},
  volume = {92},
  numero = {2},
  pages = {101--108},
  ISSN = {1916-2790},
  year = {2014},
  DOI = {10.1139/cjb-2013-0224},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061806},
}