Fuente: Revista Ceres Lawinscky, Pabliane Ramos;

Souza, Margarete Magalhães;

Melo, Cláusio Antônio Ferreira De;

Ahnert, Dário;

Pinto, Luiz Roberto Martins;

Corrêa, Ronan Xavier;

Georges, Marc Ernso;



ABSTRACT Theobroma cacao is a species of economic importance mainly for the food industry. The objective of the present study was to analyze pollen viability, stigma receptivity and controlled pollinations as a function of flower opening time (nine times, from 8:00 am to 4:00 pm) in selected plants of clones TSH1188 and CCN51. There was a higher average percentage of stigma receptivity except at the last collection time (4:00 pm). The clones showed a higher average percentage of pollen viability from 8:00 to 11:00 am. Fertilization percentage varied from 12.5 to 68.7% in clones throughout the flower opening time; a gradual trend in the fall in fertilization percentage was observed until 12:00 pm. Significant differences between clones for pollen viability and stigma receptivity were observed, indicating the influence of controlled pollination time on these characteristics.