Resumo

PARES-MARTINEZ, J; LINAREZ, R; ARIZALETA, M  e  MELENDEZ, L. Aspectos de la biología floral en lechosa (Carica papaya L.) cv. «Cartagena roja», en el estado Lara, Venezuela.. Rev. Fac. Agron. [online]. 2004, vol.21, n.2, pp.116-125. ISSN 0378-7818.

In order to contribute the knowledge about floral biology of papaya, anthesis, dehiscence of anthers, quantity, and viability of pollen grain on different flowers and fruit set moment were studied. Anthesis, dehiscence of anthers and fruit set were evaluated by observations in field, selected each of floral types at random. Quantity and viability were determined by hematocytometer methodological, using aniline blue in lactofenol at 1%. The results indicated different between floral types. As anthesis as fruit set begin slower in a type I flower. Dehiscence of anthers occurred before anthesis. The floral IV+ the biggest quantity of pollen grain, compared with the types IV and V. Viability percentages were 86,2; 86,7 and 82,7% for IV, IV+ and V floral types, respectively.

Palavras-chave : Carica papaya; anthesis,; dehiscence of anthers,; fruit set; pollen,; viability..