Effect of light, temperature, and salinity and drought stresses on seed germination of Hypericum ericoides, a wild plant with ornamental potential
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Vicente Colomer, María José; Martínez Díaz, Eulalia; Martínez Sánchez, Juan José; Franco Leemhuis, José Antonio; Bañón Arias, Sebastián del Pilar; [et al.]Área de conocimiento
Producción VegetalFecha de publicación
2020-08Editorial
ElsevierCita bibliográfica
Vicente, M.J.; Martínez-Díaz, E.; Martínez-Sánchez, J.J.; Franco, J.A.; Bañón, S.; Conesa, E. (2020). Effect of light, temperature, and salinity and drought stresses on seed germination of Hypericum ericoides, a wild plant with ornamental potential. Scientia Horticulturae, 270, 109433Revisión por pares
siPalabras clave
Abiotic stressSeed ecology
Urban gardening
Osmotic potential
Germination recovery
Ornamental especies
Resumen
Hypericum ericoides is a rock plant of potential ornamental use in sustainable gardening in Mediterranean urban environment. This study was carried out to investigate the effects of temperature, light, salinity and soil moisture at the stage of plant life most sensitive to abiotic stresses (seed germination). The results indicate that light is not a germination requirement, while temperature the main factor that regulates the germination process of this species. Seed germination was inhibited by warm temperatures of 25 and 30 ºC. By contrast, intermediate temperatures of 10, 15 and 20 ºC induced high germination percentages both in alternating light/darkness and continuous darkness. The alternating temperature of 12/20 ºC led to germination percentages close to 100% and the highest germination speed, making this the suggested optimal for germination. The germination values attained demonstrated the absence of dormancy in H. ericoides seeds. In general, salinity and drought stress (induced ...
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