@article{fdi:010091220,
  title = {{T}ranspiration efficiency variations in the pearl millet reference collection {PM}i{GAP}},
  author = {{G}r{\'e}goire, {L}aura and {K}holova, {J}. and {S}rivastava, {R}. and {H}ash, {C}. {T}. and {V}igouroux, {Y}ves and {V}adez, {V}incent},
  editor = {},
  language = {{ENG}},
  abstract = {{T}ranspiration efficiency ({TE}), the biomass produced per unit of water transpired, is a key trait for crop performance under limited water. {A}s water becomes scarce, increasing {TE} would contribute to increase crop drought tolerance. {T}his study is a first step to explore pearl millet genotypic variability for {TE} on a large and representative diversity panel. {W}e analyzed {TE} on 537 pearl millet genotypes, including inbred lines, test-cross hybrids, and hybrids bred for different agroecological zones. {T}hree lysimeter trials were conducted in 2012, 2013 and 2015, to assess {TE} both under well-watered and terminal-water stress conditions. {W}e recorded grain yield to assess its relationship with {TE}. {U}p to two-fold variation for {TE} was observed over the accessions used. {M}ean {TE} varied between inbred and testcross hybrids, across years and was slightly higher under water stress. {TE} also differed among hybrids developed for three agroecological zones, being higher in hybrids bred for the wetter zone, underlining the importance of selecting germplasm according to the target area. {E}nvironmental conditions triggered large {G}enotype x {E}nvironment ({G}x{E}) interactions, although {TE} showed some high heritability. {T}ranspiration efficiency was the second contributor to grain yield after harvest index, highlighting the importance of integrating it into pearl millet breeding programs. {F}uture research on {TE} in pearl millet should focus (i) on investigating the causes of its plasticity i.e. the {G}x{E} interaction (ii) on studying its genetic basis and its association with other important physiological traits.},
  keywords = {},
  booktitle = {},
  journal = {{PL}o{S} {O}ne},
  volume = {19},
  numero = {7},
  pages = {e0299686 [13 p.]},
  ISSN = {1932-6203},
  year = {2024},
  DOI = {10.1371/journal.pone.0299686},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091220},
}