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Responses of Pinus pinea seedlings to moderate drought and shade is the provenance a differential factor?
- Source :
- Repositorio de Resultados de Investigación del INIA, INIA: Repositorio de Resultados de Investigación del INIA, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA
- Publication Year :
- 2018
- Publisher :
- Academy of Sciences of the Czech Republic, 2018.
-
Abstract
- The widespread Mediterranean Pinus pinea showed exceptionally low genetic diversity and low differentiation between traits in the adult phase. We explored the adaptation potential of seedlings from four main Iberian provenances during their regeneration phase. We assessed the variability of shoot growth, allometry, physiological traits, and phenotypic plasticity to the interactive effect of light and water environments during 8-month moderate water-stress cycle and after one-week heat wave. The effect of shade and drought was mainly orthogonal whatever the provenance. The inland La Mancha provenance showed higher shoot growth and biomass compared to the southern coastal Depresion-del-Guadalquivir provenance. Following the heat wave, La Mancha presented higher net photosynthetic rates, a lower decrease in maximal quantum efficiency of PSII, and a higher accumulated relative height growth, thus, showing an adaptive advantage. The observed differences corroborated the ecological grouping of the provenances along latitudinal and inland–coastal gradients. We confirmed the high adaptive plasticity of Pinus pinea to the unpredictable Mediterranean environment.
- Subjects :
- 0106 biological sciences
Mediterranean climate
Provenance
Biomass (ecology)
Phenotypic plasticity
Atitudinal gradient
Physiology
fungi
Adaptive plasticity
Plant Science
Biology
Photosynthesis
010603 evolutionary biology
01 natural sciences
Light-response curves
Agronomy
Heat shock
Mediterranean stone pine
Botany
Shoot
Gas exchange
Allometry
Adaptation
010606 plant biology & botany
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Repositorio de Resultados de Investigación del INIA, INIA: Repositorio de Resultados de Investigación del INIA, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA
- Accession number :
- edsair.doi.dedup.....6866630ac526be557ed6e26f5a244d81