@article{fdi:010040900,
  title = {{E}vidence for an interaction effect during in vitro rooting of oil palm ({E}laeis guineensis {J}acq.) somatic embryo-derived plantlets},
  author = {{K}onan, {E}. {K}. and {K}ouadio, {J}. {Y}. and {F}lori, {A}. and {D}urand {G}asselin, {T}. and {R}ival, {A}lain},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n vitro rooting of oil palm shoots derived from somatic embryos was achieved through a single-phase protocol in which three shoots are cultured in the same culture tube on an alpha-naphtaleacetic acid-enriched culture medium. {R}ooting performance was dependent on both the genetic origin and initial size of the shoot explants. {A}ll shoots from a given tube showed a tendency to give roots of the same type, independent of the original size of the explant. {W}hatever the clonal line, longer-size shoots ({L}-type: > 9 cm) showed higher rooting rates than medium-size ({M}-type: 7-9 cm) and short-size ones ({S}-type: 5-7 cm). {W}hen groups of three shoots from the same clonal line were rooted together in the same culture tube, the combination of plant size within the group impacted overall quality of rooting. {W}ithin triplets of shoots containing more than one short individual, the probability of obtaining adequate rooting was low. {S}imilarly, when more than one long shoot was included in the triplet rooting, quality was also poor. {B}y avoiding such combinations, the rate of well-rooted plantlets increased by 25%, with a maximum of 66% when triplets of {S}/{M}/{L} combination were used. {S}maller shoots, which usually showed poor rooting performance, were therefore found to benefit from the presence of their neighbors. {T}his interaction between the sizes of individuals in a given tube was found to be associated with a within-tube correlation effect, a phenomenon previously described as ' event coupling,' which was estimated using a distorted binomial-type distribution of probabilities. {T}he resulting calculation of a coupling factor (average r=0.60) explains the behavior of shoots within the same culture tube and their average rooting performance. {M}odeling of the interactions that occurred during in vitro rooting is described here and is recommended for improvement of this critical step in micropropagation.},
  keywords = {{A}recaceae ; auxins ; cocultivation ; coupling factor ; in vitro rooting ; somatic embryogenesis},
  booktitle = {},
  journal = {{I}n {V}itro {C}ellular and {D}evelopmental {B}iology {P}lant},
  volume = {43},
  numero = {5},
  pages = {456--466},
  ISSN = {1054-5476},
  year = {2007},
  DOI = {10.1007/s11627-007-9093-y},
  URL = {https://www.documentation.ird.fr/hor/fdi:010040900},
}