Resumen de Inter and intra species variation on mexican pines grown under two watering regimes
The genus Pinus is very important in Mexico due to economic and ecologic aspects, with more than 30 species. The genus is widely used in reforestation and soil conservation programs, but also due to the high diversity of species, and the effect of agricultural and livestock activities we need to promote genetic resource conservation programs. The species and populations greatly differ in growth, and drought, frost and fire resistance. Therefore, to assist in restoration and conservation programs, we were interested to characterize one-year old seedling from 4 different species and 19 populations grown in greenhouse under different watering regimes (100-90% and45-35 % of field capacity). We measured survival, growth, height and biomass at the final of the experiment. The analysis showed the importance of watering among species, and a lower influence of inter population variation for some of the species. The results will let to identify those populations be able to resist greater environmental stress due to climatic change. The populations will be suggesting using in the conservation and breeding genetic programs.
