Observations on pollination in loblolly pine

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Abstract
Insitu observations of Pinustaeda L. strobili in a 26-year-old grafted seed orchard showed that emergence of pollination droplets began on unpollinated strobili as they approached full receptivity and declined thereafter. Droplets reemerged throughout the receptive period primarily during the early morning or evening until pollinated, after which they did not emerge again. Droplet reemergence for a given ovule was independent of other ovules on the same strobilus. Rainfall was found to effect pollination. Ovules pollinated during rain did not subsequently display pollination droplets.

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