Produção Nacional
Revisado por pares
Occurence of Commelina villosa as weed in Paraná State, Brazil
2000; Sociedade Brasileira da Ciência das Plantas Daninhas; Volume: 18; Issue: 1 Linguagem: Inglês
ISSN
1806-9681
AutoresDalva Cassie Rocha, Roberto Antônio Rodella, D. Martins,
Tópico(s)Growth and nutrition in plants
ResumoCommelinaceae are weeds with unsatisfactory control in different parts of the country. Commelina benghalensis is the main Commelinaceae weed in soybean, corn, coffee and orange crops in Brazil. Commelina diffusa and Commelina erecta are also known as common weeds in national territory. Commelina villosa is only related, until this moment, to Bahia and Goias States and to Distrito Federal, too. The present paper intented to identify and to relate C. villosa as weed in Parana State crops, where it may have been confused with other Commelina species, mainly C. benghalensis. Samples of C. villosa and C. benghalensis were collected, in Ponta Grossa, Tibagi, Pirai do Sul, Guarapuava, Pato Branco, Francisco Beltrao, Cascavel, Campo Mourao and Londrina cities, from soybean, bean and corn crops. One part of these material was used to make exsicates and the other one was cultivated at Departamento de Botânica of Instituto de Biociencias de Botucatu-UNESP. Morphological characters were analysed and these species were confronted. Analysis of variance were used for quantitatives datas. C. villosa was distinguished because it has translucent fillets, bigger (9.76 x 3.26 cm) eliptical or eliptical-narrow leaves without petiole which are dark green with violet spots in the under surface, among others characteristics. The occurrence of C. villosa in Parana State was related in all that cities unless Campo Mourao and Londrina.
Referência(s)