requerimentos de polinização da goiabeira pollination requeriments of guava
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2007
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Abstract
A goiabeira (Psidium guajava) é uma planta muito cultivada no Nordeste brasileiro, onde seus frutos têm elevada importância econômica, porém poucas pesquisas referem-se aos seus requerimentos de polinização. Estes requerimentos, quando conhecidos, podem ajudar no direcionamento do manejo de pomares e de agentes polinizadores visando a melhorar a produtividade das culturas. Assim sendo, o presente trabalho tem por objetivo investigar os requerimentos de polinização da goiabeira. O estudo foi desenvolvido com a cultivar "paluma" e constou de tratamentos de polinização livre, polinização restrita, autopolinização manual, polinização cruzada manual com pólen da mesma e de outra cultivar. Os resultados mostraram que a goiabeira produz frutos principalmente quando visitadas por agentes bióticos, pois, dentre as flores que foram protegidas das visitas desses agentes polinizadores, somente 15,09% delas produziram frutos. Apesar de vingarem frutos quando autopolinizada, a goiabeira beneficia-se mais da polinização cruzada, pois incrementa sua produção em até 39,5%. Conclui-se que a presença nos pomares de agentes bióticos promovendo polinização cruzada é necessária para maximizar a produtividade da cultura.
Guava (Psidium guajava) is largely cultivated in Northeastern Brazil where it is a very important crop. However few researches have investigated the plant pollination requirements. This knowledge can help in managing orchards to improve crop productivity. Therefore, the present study is aimed at investigating the pollination requirements of guava. The study was carried out with cultivar paluma and treatments of open pollination, restricted pollination, hand self-pollination and hand cross pollination among plants of the same and different cultivars were tested. Guava set fruits when pollinated by wind or biotic agents, but flowers protected from flower visitors set only 15.09%. Guava flowers set fruits when were hand self-pollinated, but cross pollinated flowers showed better results because raised fruit production up to 39.5%. The presence of biotic pollinators promoting cross pollination in guava orchards seems to be necessary to maximize crop productivity.
Guava (Psidium guajava) is largely cultivated in Northeastern Brazil where it is a very important crop. However few researches have investigated the plant pollination requirements. This knowledge can help in managing orchards to improve crop productivity. Therefore, the present study is aimed at investigating the pollination requirements of guava. The study was carried out with cultivar paluma and treatments of open pollination, restricted pollination, hand self-pollination and hand cross pollination among plants of the same and different cultivars were tested. Guava set fruits when pollinated by wind or biotic agents, but flowers protected from flower visitors set only 15.09%. Guava flowers set fruits when were hand self-pollinated, but cross pollinated flowers showed better results because raised fruit production up to 39.5%. The presence of biotic pollinators promoting cross pollination in guava orchards seems to be necessary to maximize crop productivity.
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alves2007cinciarequerimentos
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| Authors | ;José Everton Alves;Breno Magalhães Freitas |
| Journal | Trials |
| Year | 2007 |
| DOI |
10.1590/S0103-84782007000500010
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