Early selection of Eucalyptus grandis clones in central Brazil
1995
Blake, T. J. | Bevilacqua, E. | Suiter Filho, W.
Genetic variation in productivity of nine Eucalyptus grandis clones was compared after 3 and 15 months of growth in the fieldin Minas Gerais, Brazil. Clones that were larger (i.e. heavier) after 3 months were still larger after 15 months of growth and had lower stomatal conductances. After 15 months, larger cultivars had a greater allocation of biomass towards stemwoodproduction relative to leaves. Other physiological processes and leaf characteristics (e.g. net photosynthesis, average leaf area, stomatal size and density) were not related to productivity when analyzed by rank correlations. The results suggest that thegreater productivity of some clones was associated with more efficient stemwood production, the ability to control relative leaf development and a lower stomatal conductance at an early age.
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Эту запись предоставил Universiti Putra Malaysia