RT info:eu-repo/semantics/article
T1 Intraspecific variation in pines from the trans-mexican volcanic belt grown under two watering regimes: Implications for management of genetic resources
A1 Flores, Andrés
A1 Climent Maldonado, José
A1 Pando Fernández, Valentín
A1 López Upton, Javier
A1 Alía Miranda, Ricardo
K1 Drought stress
K1 Genetic variation
K1 Early testing
K1 Adaptive variation
K1 Genecology
K1 Phenotypic plasticity
K1 31 Ciencias Agrarias
K1 3106 Ciencia Forestal
AB Management of forest genetic resources requires experimental data related to the genetic variation of the species and populations under different climatic conditions. Foresters also demand to know how the main selective drivers will influence the adaptability of the genetic resources. To assess the inter- and intraspecific variation and plasticity in seedling drought tolerance at a relevant genetic resource management scale, we tested the changes in growth and biomass allocation of seedlings of Pinus oocarpa, P. patula and P. pseudostrobus under two contrasting watering regimes. We found general significant intraspecific variation and intraspecific differences in plasticity, since both population and watering by population interaction were significant for all three species. All the species and populations share a common general avoidance mechanism (allometric adjustment of shoot/root biomass). However, the intraspecific variation and differences in phenotypic plasticity among populations modify the adaptation strategies of the species to drought. Some of the differences are related to the climatic conditions of the location of origin. We confirmed that even at reduced geographical scales, Mexican pines present differences in the response to water stress. The differences among species and populations are relevant in afforestation programs as well as in genetic conservation activities.
PB MDPI
YR 2018
FD 2018
LK https://uvadoc.uva.es/handle/10324/57423
UL https://uvadoc.uva.es/handle/10324/57423
LA eng
NO Forests, 2018, vol.9, n. 2, p. 71
NO Producción Científica
DS UVaDOC
RD 24-nov-2024