Repulsion by an ovule I

Video 3. Pollen tube repulsion by a targeted ovule in an  in vitro  guidance assay

Three pollen tubes approach an ovule, however only one of them is ultimately successful.

The unsuccessful tubes stall near the micropyle, despite coming very close to it.

Ref:  Palanivelu & Preuss (2006), BMC Plant Biology 6:7 .

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