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pollen tube |
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pollen tube [′päl·ən ‚tüb] (botany) The tube produced by the wall of a pollen grain which enters the embryo sac and provides a passage through which the male nuclei reach the female nuclei. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| In the sterile strain, pollen tubes either stall in their journey or go astray. When researchers dabbed pollen from these flowers onto female flower parts, 32 percent more of the pollen from the solar trackers started growing pollen tubes toward the ovaries, compared with pollen from straitjacketed flowers. |
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