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Manipulating Standing Crop of Flowers:

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Flowers wilt within ~4 hours when pollinated.

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Flowers remain open ~ 5-7 days if not pollinated.

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Thus, flower standing crop is greater when there are few pollinators.

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Slide 9 of 31
Notes:

To manipulate flower standing crop, we took advantage of the difference in duration of pollinated vs. unpollinated flowers. If not pollinated, flowers accumulate on the racemes.