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Pollination is the primary step in seed formation. Pollination biologists have shown that pollination failure can occur at all steps in the dispersal process and at several different levels. Increased risk of pollination failure is associated with pollen if it is delivered to a stigma too little, too much, too late, too mixed in composition or too poor in quality. It is associated with pollinators...
Research on how plant guard cells, which form epidermal stomatal gas-exchange valves, regulate the aperture of stomatal pores in response to changes in [CO2] is of current interest given the necessity of selecting and developing crop cultivars that perform better in a shifting global climate. Understanding of the underlying CO2 response mechanisms is also needed for modeling efforts to better understand...
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