Abstract
Abstract The period between flower bud emergence and anthesis for Carica goudotiana (Tr. & Pl.) Solms, C. cauliflora Jacq., C. parviflora (A. DC.) Colms., C. monoica Desf. and C. papaya L. ranged from 27-47 days. Flowers of C. parviflora showed peak anthesis between 8 and 10 AM, while in the other 4 species, peak anthesis occurred between 4 and 8 PM. Pollen of the 5 species and C. pennata Heilborn, Svensk showed satisfactory viability in vitro. Pollen germination was best in media at pH 5.5-7.5. Sibmating C. cauliflora, C. pennata, and C. parviflora produced fruit sets above 80%, although seed viability of the latter 2 species was low. Under the conditions of this study, relatively strong intraspecific incompatibility was shown between green and red segregants of C. goudotiana and between El Salvador and Venezuela collections of C. cauliflora as indicated by low fruit set percentages. Only C. cauliflora from El Salvador produced good fruit set and high seed viability from sib-pollinations.
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