@article{fdi:010085290,
  title = {{P}ath coefficient and principal component analyses for biomass allocation, drought tolerance and carbon sequestration potential in wheat},
  author = {{S}hamuyarira, {K}. {W}. and {S}himelis, {H}. and {F}iglan, {S}. and {C}haplot, {V}incent},
  editor = {},
  language = {{ENG}},
  abstract = {{I}ncreased root biomass allocation could serve as a proxy trait for selecting crop ideotypes with drought tolerance and carbon sequestration potential in agricultural soils. {T}he objective of this study was to assess the magnitude of the relationship between root biomass and yield components and to identify influential traits so as to optimise genotype selection for enhanced biomass allocation, drought tolerance and carbon sequestration potential in bread wheat ({T}riticum aestivum {L}.). {O}nehundred wheat genotypes consisting of 10 parents and 90 derived {F}-2 families were evaluated under drought-stressed and non-stressed conditions at two different sites. {D}ata were collected for days to heading ({DTH}), days to maturity ({DTM}), plant height, productive tiller number ({TN}), spike length, spikelets per spike ({SPS}), kernels per spike ({KPS}), thousand kernel weight ({TKW}), shoot biomass, root biomass, total plant biomass ({PB}), root-to-shoot ratio ({RS}) and grain yield. {T}here was significant (p < 0.05) genetic variation in most assessed traits, {TN} and {RS} being exceptions. {R}oot biomass had significant positive correlations with grain yield under drought-stressed (r = 0.28) and non-stressed (r = 0.41) conditions, but a non-significant correlation was recorded for {RS} and grain yield. {N}otably, both root biomass and shoot biomass had significant positive correlations under both water regimes, revealing the potential of increasing both traits with minimal biomass trade-offs. {T}he highest positive direct effects on grain yield were found for {KPS} and {PB} under both water regimes. {T}he present study demonstrated that selection based on {KPS} and {PB} rather than {RS} will be more effective in ideotype selection of segregating populations for drought tolerance and carbon sequestration potential.},
  keywords = {biomass allocation ; drought tolerance ; path analysis ; principal ; component analysis ; selection efficiency ; wheat},
  booktitle = {},
  journal = {{P}lants},
  volume = {11},
  numero = {11},
  pages = {1407 [14 ]},
  year = {2022},
  DOI = {10.3390/plants11111407},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085290},
}