. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. Figure 4. Plus-tree of Pinus caribaea. Note straight stem and small, wide-angled branches. have passed the typical juvenile stage during which some trees exhibit exceptional vigour which is not maintained subsequently. The Department is aware that selection so early and from such a small population possesses inherent dangers but it is believed that se- lection and breeding from young crops is better than no selection at all. Once the technique has been perfected selection and br
. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. Figure 4. Plus-tree of Pinus caribaea. Note straight stem and small, wide-angled branches. have passed the typical juvenile stage during which some trees exhibit exceptional vigour which is not maintained subsequently. The Department is aware that selection so early and from such a small population possesses inherent dangers but it is believed that se- lection and breeding from young crops is better than no selection at all. Once the technique has been perfected selection and breeding from progressively older crops will be continuous. The criteria applied during selection are: (a) straight unforked stem (b) vigour. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern Forest Experiment Station (New Orleans, La. ). Rio Piedras, P. R. : Tropical Forest Experiment Station, United States Forest Service
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