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Initiation and Development of Primordia in Slash Pine

The present paper presents the results of a study which was made to determine the time of male and female flower primordia initiation and the subsequent floral development of these structures on slash pine trees growing in the Lake City, Florida area. For the microsporangiate strobili, or the male catkings, the steps leading to the formation of the tetrad division of the microspore mother cells are described, and the description of the megasporangiate strobili or the female corselets, includes the various phases from flower primordia initiation to the formation of the ovule on the ovuliferous scale.


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Author(s): Francois Mergen

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1957