Abstract
Recent understanding on biparental inbreeding depression teaches us that pollen relatedness to female gametes should be regarded as a significant aspect of pollen quality. Pollen relatedness is determined by pollen dispersal pattern and spatial genetic structure, however the former is possibly affected to varying degrees by certain variations in pollination conditions. Our recent study, which applied DNA microsatellite markers to study pollen dispersal patterns and pollen relatedness in a tropical emergent tree in two years, showed that the level of inbreeding differed affected by different types of pollinators. This infers that pollen of good quality dispersed under a particular pollination condition may play a significant role in population regeneration. Relationships between pollen dispersal patterns and various reproductive traits or conditions should be elucidated to better understand plant reproductive strategies.
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