Abstract
Proteins in pollen grain walls are essential for germination in poplars; they also affect the incompatibility systems on which pollen tube growth is dependent.
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KNOX, R., WILLING, R. & ASHFORD, A. Role of Pollen-Wall Proteins as Recognition Substances in Interspecific Incompatibility in Poplars. Nature 237, 381–383 (1972). https://doi.org/10.1038/237381a0
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DOI: https://doi.org/10.1038/237381a0
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