@article{fdi:010079829,
  title = {{I}ntraspecific diversity as a reservoir for heat-stress tolerance in sweet potato},
  author = {{H}eider, {B}. and {S}truelens, {Q}uentin and {F}aye, {E}. and {F}lores, {C}. and {P}alacios, {J}. {E}. and {E}yzaguirre, {R}. and de {H}aan, {S}. and {D}angles, {O}livier},
  editor = {},
  language = {{ENG}},
  abstract = {{S}table and sufficient food supplies are increasingly threatened by climatic variability, in particular extreme heat events. {I}ntraspecific crop diversity may be an important biological resource to both understand and maintain crop resilience to extreme conditions. {H}ere using data from a mass field experiment screening for heat tolerance in sweet potato ({I}pomoea batatas), we identify 132 heat-tolerant cultivars and breeding lines (6.7%) out of 1,973 investigated. {S}weet potato is the world's fifth most important food crop, and mean conditions experienced by sweet potato by 2070 are predicted to be 1 to 6 degrees {C} warmer, negatively impacting most genotypes. {W}e identify canopy temperature depression, chlorophyll content and storage root-flesh colour as predictors of heat tolerance and, therefore, as potential traits for breeding consideration. {T}hese results highlight the role of intraspecific biodiversity for the productivity and resilience of food and agricultural systems in the face of climate change. {M}ass field testing of heat tolerance in 1,973 cultivars of sweet potato ({I}pomoea batatas) from 50 countries identifies tolerant cultivars and reveals tolerance-predictive traits for breeding consideration. {T}he work highlights the role of intraspecific diversity for future crop resilience.},
  keywords = {},
  booktitle = {},
  journal = {{N}ature {C}limate {C}hange},
  volume = {11},
  numero = {1},
  pages = {64--69},
  ISSN = {1758-678{X}},
  year = {2021},
  DOI = {10.1038/s41558-020-00924-4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079829},
}