Identification of successive flowering phases highlights a new genetic control of the flowering pattern in strawberry
GUÉDON, Yann
Amélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
Modeling plant morphogenesis at different scales, from genes to phenotype [VIRTUAL PLANTS]
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Amélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
Modeling plant morphogenesis at different scales, from genes to phenotype [VIRTUAL PLANTS]
GUÉDON, Yann
Amélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
Modeling plant morphogenesis at different scales, from genes to phenotype [VIRTUAL PLANTS]
< Réduire
Amélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
Modeling plant morphogenesis at different scales, from genes to phenotype [VIRTUAL PLANTS]
Langue
en
Article de revue
Ce document a été publié dans
Journal of Experimental Botany. 2016, vol. 67, n° 19, p. 5643 - 5655
Oxford University Press (OUP)
Résumé en anglais
The genetic control of the switch between seasonal and perpetual flowering has been deciphered in various perennial species. However, little is known about the genetic control of the dynamics of perpetual flowering, which ...Lire la suite >
The genetic control of the switch between seasonal and perpetual flowering has been deciphered in various perennial species. However, little is known about the genetic control of the dynamics of perpetual flowering, which changes abruptly at well-defined time instants during the growing season. Here, we characterize the perpetual flowering pattern and identify new genetic controls of this pattern in the cultivated strawberry. Twenty-one perpetual flowering strawberry genotypes were phenotyped at the macroscopic scale for their course of emergence of inflorescences and stolons during the growing season. A longitudinal analysis based on the segmentation of flowering rate profiles using multiple change-point models was conducted. The flowering pattern of perpetual flowering genotypes takes the form of three or four successive phases: an autumn-initiated flowering phase, a flowering pause, and a single stationary perpetual flowering phase or two perpetual flowering phases, the second one being more intense. The genetic control of flowering was analysed by quantitative trait locus mapping of flowering traits based on these flowering phases. We showed that the occurrence of a fourth phase of intense flowering is controlled by a newly identified locus, different from the locus FaPFRU, controlling the switch between seasonal and perpetual flowering behaviour. The role of this locus was validated by the analysis of data obtained previously during six consecutive years.< Réduire
Mots clés en anglais
multiple change-point model
genetic control
longitudinal data analysis
flowering phase
Fragaria × ananassa
perpetual flowering
Origine
Importé de halUnités de recherche