Gametophytic self-incompatibility in Andean capuli ( subsp. ): allelic diversity at the S-RNase locus influences normal pollen-tube formation during fertilization.

Capuli subsp. is a tree species that is widely distributed in the northern Andes. In , fruit set and productivity appears to be limited by gametophytic self-incompatibility (GSI) which is controlled by the S-Locus.