Temporal response to drought stress in several Prunus Rootstocks and wild species
Martínez-García, Pedro José (Consejo Superior de Investigaciones Científicas. Centro de Edafología y Biología Aplicada del Segura)
Hartung, Jens (University of Hohenheim. Institute of Crop Science (Germany))
Pérez de los Cobos, Felipe (Centre de Recerca en Agrigenòmica)
Martínez-García, Pablo (Consejo Superior de Investigaciones Científicas. Centro de Edafología y Biología Aplicada del Segura)
Jalili, Sara (Tarbiat Modares University. Department of Horticultural Science (Iran))
Sánchez-Roldán, Juan Manuel (Consejo Superior de Investigaciones Científicas. Centro de Edafología y Biología Aplicada del Segura)
Rubio, Manuel (Consejo Superior de Investigaciones Científicas. Centro de Edafología y Biología Aplicada del Segura)
Dicenta, Federico (Consejo Superior de Investigaciones Científicas. Centro de Edafología y Biología Aplicada del Segura)
Martínez-Gómez, Pedro (Consejo Superior de Investigaciones Científicas. Centro de Edafología y Biología Aplicada del Segura)

Data:	2020
Resum:	Prunus species are important crops in temperate regions. In these regions, drought periods are predicted to occur more frequently due to climate change. In this sense, to reduce the impact of climate warming, obtaining new tolerant/resistant cultivars and rootstocks is a mandatory goal in Prunus breeding. Therefore, the current study assembled three Prunus species including almond, (P. dulcis Mill D. A. Webb), apricot (P. armeniaca L. ) and peach (P. persica L. ) to model the temporal effects of drought. A hybrid peach × almond and a wild almond-relative species Prunus webbii were also included in the study. Physiological traits associated with photosynthetic activity, leaf water status, and chlorophyll content were assessed under three watering treatments. Results showed that effects of time, genotype, and treatment interact significantly in all traits. In addition, results confirmed that P. webbii have a greater tolerance to drought than commercial rootstocks. However, "Real Fino" apricot showed the fastest recovery after re-irrigation while being one of the most affected cultivars. In addition, from the better response to these watering treatments by the almond genotypes, two different trends were observed after re-irrigation treatment that clearly differentiate the response of the almond cultivar "Garrigue" from the rest of Prunus genotypes. A better characterization of the short-term drought response in Prunus, an accurate and more efficient evaluation of the genotype effect was obtained from the use of mixed models considering appropriate variance-covariance structures. Although the advantages of these approaches are rarely used in Prunus breeding, these methodologies should be undertaken in the future by breeders to increase efficiency in developing new breeding materials.
Ajuts:	European Commission 618127
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Drought stress ; Prunus ; Mixed model ; Breeding ; Recovery
Publicat a:	Agronomy, Vol. 10, Issue 9 (September 2020) , art. 1383, ISSN 2073-4395

DOI: 10.3390/agronomy10091383

18 p, 361.9 KB

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