Abstract
Through cross-pollinations among 42 combinations of 7 passion fruit species, 6 new hybrids were produced. Most of the hybrids were vigorous, but they varied in tendency to flower. Although intermediate to parent species in characteristics of the foliage, flowers, and fruits, unique characteristics were often evident. The hybrids varied in degree of sterility of pollen, and in success of selfing and backcrossing. Pollen was often aborted, but fertility as female was frequently sufficient to permit some seed production. The fruit varied in quality, but one combination, Passiflora edulis f. flavicarpa x P. alata, produced a fruit superior to those of the parent species. The possibility of cross-breeding to improve edible passion fruit species has thus been demonstrated.
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