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Pollination of okra flowers, Abelmoschus esulentus L Moench Estudo sobre a polinizacao do quiabeiro, Abelmoschus esculentus L Moench

Malerbo-Souza, D.T.resinha.; Arnaut de Toledo, V. de Alencar.; Stuchi, A.C.istiane.; Arnaut de Toledo, J. de Oliveira.

Acta Scientiarum 23(5): 1281-1285

2001


ISSN/ISBN: 1679-9291
Accession: 038551527

This research was carried out in ltuverava SP Brazil, to evaluate frequency, nectar or pollen hoarding by insects, opening and closing time of flowers in okra crop, Abelnioschus esculentus (Malvaceae) var. Chifre-de-veado, and the effect of their visits in fruit production. Flowers were visited by insects between 7 a.m. to 6 p.m. The flowers were marked and fruit set was evaluated: 10 flowers were protected with a bag and compared to same quantity of unprotected flowers. Okra flowers began opening by 9:40 a.m. to 10 a.m. and closing by 2:45 p.m. and 3:20 p.m. of the same day, when they started to shrivel. The insects observed in nectar hoarding were Hymenoptera (Melipona sp.) and Lepidoptera. In pollen hoarding, insects most frequently were Thysanoptera, Formicidae, Coleoptera and Hymenoptera (MelipotM sp. and Apis tuellifera). The crop showed 100% auto fertilization and did not require pollinators to produce fruits. However, in flowers visited by insects fruits were heavier, longer and wider.

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