A controllably constitutively female sterile plant is provided. A gene critical to female fertility is identified and the native gene inactivated. The gene is cloned, linked to an inducible promoter and inserted into the plant. The result is a plant that is constitutively female sterile with inducible female fertility.

 
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< Photoelectric converter with a plurality of photoelectric conversion layers deposited in a predetermined orientation relative to one another

> Permanently deformable dressing

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