n.1.(Physiol.) A term collectively applied to the changes or conditions preceding fecundation, especially to the changes which the ovum undergoes before fecundation.
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This result leads to the conclusion that there are no prefecundation effects on KW determination in maize.
Stand density effects on prefecundation ear growth had no consequences on KW, which appeared to be related only to the postflowering source--sink ratio.