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Date of Pollen Shedding by Longleaf Pine Advanced by Increased Temperatures at StrobiliAuthor(s): W.D. Boyer; F.W. Woods
Source: Forest Sci. 19:315-318
Publication Series: Miscellaneous Publication
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DescriptionAir temperatures in the microenvironments of flower buds of Pinus palustris Mill. appear to be a major determinant of flowering date. Shoots bearing staminate strobili on each of 10 trees were bagged at different times and for varying lengths of time in January and February. Bagging treatments provided 488 to 3,852 additional degree-hr of heat above 50°F accumulated from January 1. Flowering date was advanced more or less in proportion to added heat, up to an average of 8.6 days ahead of unbagged controls. Individual trees varied widely in date of pollen shedding.
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CitationBoyer, W.D.; Woods, F.W. 1973. Date of Pollen Shedding by Longleaf Pine Advanced by Increased Temperatures at Strobili. Forest Sci. 19:315-318
KeywordsPinus palustris, heat sums, phenology
- Air Temperature, Heat Sums, and Pollen Shedding Phenology of Longleaf Pine
- Pine pollen collections dates - annual and geographic variation
- Recognizing Developmental Stages in Southern Pine Flowers: The Key to Controlled Pollination
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