Pollen transport in corn: effects of distance and other agents
2003
Anolin, V.R. | Agsaoay, M.V. | Sayo, D.T. (Isabela State Univ., Echague, Isabela 3309 (Philippines))
The outcrossing rate in corn (Zea mays L.) yellow x white was studied. Plant population was established in a donor-acceptor field consisting of 29,600 sq.m., the acceptor field surrounding the donor field. Isolation distances of 10m, 20m, 30m, 40m, 50m, 60m, were provided starting from the edge of the donor field directed to the North, East, West and 10m interval across 169 meters long oriented towards the south direction. At harvest, actual plant stand was assessed and individual corn ears were evaluated in terms of percent outcrossing incidence and tested statistically. Results showed that the average distance was an abrupt decrease out of outcrossed grains occuring at 60m regardless of direction. The least percent where decreasing outcrossed grains, was observed beyond 60m. High degree of outcrossed grains was observed at 10m to 150m regardless of pollen directional flow. At 160m and beyond this distance, the acceptor plants were free from across occurrence. Correlation analysis among isolation distance and wind direction were highly significant
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