Reproductive physiology of Juniperus excelsa M. Bieb. 1-Pollen migration rate
Reproductive physiology of Juniperus excelsa M. Bieb. 1-Pollen migration rate
A. Khalique and Shahida Perveen
ABSTRACT
The pollen dispersal Juniperus excelsa M. Bieb was studied on a single isolated tree. The pollen specimens were collected at the following distances from the source tree: 3, 6, 12, 24, 48 and 96 meters. The results showed that the pollen frequency at a distance of 96 meters is 0.5%of the source frequency. The standard deviation ( D) of the pollen dispersion distance was calculated from pollen counts as a measure of pollen dispersion. It was calculated according to SEWALL WRIGHT's formula (Wright, 1962). The value of D is 16.1 meters.
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June 1977
Vol. 27, Iss. 2
