a1 Bahtim Agricultural Experiment Station, Bahtim
a2 Division of Design and Statistical Analysis, Department of Agriculture, Giza
a3 Faculty of Agriculture, El-Azhar University, Cairo, U.A.R.
The effect on cross pollination of four directions and six distances from the marker variety in Egyptian cotton was investigated. The percentage of cross pollination did not differ appreciably in the different directions but there were significant differences in cross fertilization among the six distances. A linear relation was observed between cross pollination per cent and distance up to 8.8 m. from the marker variety. Implications of these findings on various aspects of cotton breeding methodology are discussed.
(Accepted June 23 1971)