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Observational analysis shows 71% of female flowers from one seed source in longleaf pines, indicating a potential planting advantage.
Trees of one seed source produced 71 percent of the female flowers counted on 10-year-old longleaf pines from 11 seed sources planted at two locations in southwest Alabama. According to cone counts, this same source was the only one to bear flowers in all three preceding years.
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Boyer et al. (1967) studied this question.
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