Pollen tube behavior in yellow passion fruit following compatible and incompatible crosses
- Cite this article as:
- Rêgo, M., Rêgo, E., Bruckner, C. et al. Theor Appl Genet (2000) 101: 685. doi:10.1007/s001220051531
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Pistil squashes were used to examine the growth of Passiflora edulis f. flavicarpa Deg pollen tubes in self-compatible and self-incompatible crosses. Compatible tubes typically showed a uniform layer of callose deposition in the walls and in small plugs spaced at regular intervals within the tube. Two sites of rejection were observed in incompatible crosses: the stigma and on some occasions the style, especially in anomalous crosses. In the style the inhibition of pollen-tube growth occurred in both the upper and middle parts of the transmitting tract. These findings are consistent with the hypothesis that suggests the presence of a gametophytic gene which acts in association with the sporophytic S-gene in P. edulis.