@article{PAR00014446,
  title = {{I}dentification of {QTL}s associated with agronomic performance under nitrogen-deficient conditions using chromosome segment substitution lines of a wild rice relative, {O}ryza rufipogon},
  author = {{O}gawa, {S}. and {V}alencia, {M}. {O}. and {L}orieux, {M}athias and {A}rbelaez, {J}. {D}. and {M}c{C}ouch, {S}. and {I}shitani, {M}. and {S}elvaraj, {M}. {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}mproved root system architecture can enhance agronomic performance by increasing water and nitrogen ({N}) acquisition efficiency. {H}owever, little is known about interaction between root system architecture and agronomic performance under field environments. {T}o gain a better understanding about the genetic basis of these relationships, we evaluated a set of chromosome segment substitution lines ({CSSL}s) derived from crosses between a tropical japonica rice cultivar '{C}uringa' and a wild species {O}ryza rufipogon accession {IRGC}105491. {R}oot system architectural traits were investigated using the {CSSL}s at 40 days old seedlings using the root basket method under hydroponic conditions, and agronomic performances were also tested under field conditions with different {N} treatments. {A}gronomic performances were computed as the ratio of a trait value under low to high {N} treatments, including grain yield and biomass yield as nitrogen-deficiency tolerance ({NDT}) traits. {R}oot architecture and {NDT} trait {QTL}s were mapped using 238 {SNP} marker loci. {A} total of 13 {QTL}s for root system architectural, {NDT} and morpho-physiological traits were identified on chromosomes 1, 3, 4, 5, 7, 8, 9, 10 and 12. {I}nterestingly, a {QTL} for deeper root number was identified the region of {SNP} markers between id1012330 and id1021697 on chromosome 1 under hydroponic conditions overlapped with a {QTL} for {NDT} trait of relative grain yield (q{RGY}1). {T}hese results suggest that deeper root trait is helpful to maintain grain yield under nitrogen-deficient conditions. {T}he {QTL} associated root architecture could potentially be used in future rice-breeding efforts to increase agronomic performance under nitrogen-deficient conditions.},
  keywords = {{N}itrogen-deficiency tolerance ; {R}oot system architecture ; {D}eeper root ; {Q}uantitative trait locus ; {U}nderground revolution},
  booktitle = {},
  journal = {{A}cta {P}hysiologiae {P}lantarum},
  volume = {38},
  numero = {4},
  pages = {art. 103 [10 p.]},
  ISSN = {0137-5881},
  year = {2016},
  DOI = {10.1007/s11738-016-2119-5},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00014446},
}