INVESTIGADORES
GUEVARA Aranzazu
artículos
Título:
Diferential responses of Populus deltoides and Populus × canadensis clones to short‑term water defcit
Autor/es:
ROVIDA-KOJIMA, ELISA A.; GONZALEZ, CARINA V.; MUNDO, IGNACIO A.; GUEVARA, ARANZAZÚ; BIRUK, LUCÍA; GIORDANO, CARLA V.
Revista:
NEW FORESTS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2022
ISSN:
0169-4286
Resumen:
Populus spp. are among the fast-growing tree species most prone to water defcit. The use of drought-resistant clones allows mitigating the negative efects of water defcit on the establishment and the productivity of unstable irrigated plantations in dryland areas. We evaluated the responses of four Populus × canadensis (Conti 12, Guardi, I-214 and I45/51) and four Populus deltoides (Stoneville 67, Catfsh 2, Dvina and Australi- ano 129/60) clones to a short-term water stress. Three water treatments were imposed on 6-month-old plants: well-watered (WW), 5 days of irrigation withdrawal followed by rewa- tering (−5 + RW), and 9 days of irrigation withdrawal followed by rewatering (−9 + RW).Populus clones presented diferent strategies to face water defcit, resulting in variable efects on plant growth. The small-leaved clone Australiano 129/60 showed strong sto- matal control and maintained a high increase in leaf area during the water-shortage period. These strategies were associated with high relative growth under both water-shortage treat- ments. Australiano 129/60 showed to be a drought-resistant clone with the highest growth under both water-shortage treatments, appearing to be a promising clone for production in environments prone to short-term water stress.