characteristic of inheres in fertility spikelet spikelet fertility A spikelet morphology trait (TO:0000657) which is the fertility to a spikelet (PO:0009051). SpFert (related) percent sterility (related) TO:0000180 SPKFRT (related) seed setting (related) plant_trait_ontology Determined by percent of spikelets with grains identified by pressing the spikelets with the fingers and counting those that have no grains or the percent seed setting. Refer to fertility (PATO:0000274): A reproductive quality inhering in a bearer by virtue of the bearer's initiating, sustaining, or supporting reproduction. spikelet morphology trait