Biologia floral e fenologia reprodutiva do camu-camu (Myrciaria dubia (H.B.K.) McVaugh, Myrtaceae) no Estado Pará, Brasil

Content Provider	Semantic Scholar
Author	Maués, Márcia Motta Couturier, Guy
Copyright Year	2002
Abstract	The camu-camu (Myrciaria dubia (H. B.K.) McVaugh, Myrtaceae) is a native fruit tree found on seasonaly flooded banks of Amazonian rivers and lakes, which is being domesticated for cultivation on non-flooded areas. Its high ascorbic acid content, approximately 2,800 mg.100g-1 of pulp has increased the demand for local market and exportation. The floral biology and reproductive phenology of camu-camu were investigated in 1997 and 1998. The studies were carried out in orchards at Embrapa Amazonia Oriental, located in Belem and in areas of natural occurrence in Santarem and Oriximina, Para State, northern Brazil. Direct observations on the visitors behavior were done, as well as capturing of specimens for identification. M. dubia showed inflorescences with white, polyandrous, hermaphroditic flowers. Anthesis occurred between 5:00 to 7:00 a.m. The pollen grains are dry, easily carried by wind or gravity, being the main flower resource. The osmophores are located at the calyx, corolla, anthers and stigma. The flowering phenology was "steady-state" type, and showed a peak in March. Fruitification was higher in July. Partial leaf fall was observed in all the studied plants, mainly in November. The main flower visitors were Nannotrigona punctata and Trigona pallens (Meliponinae), as well as small beetles (Chrysomelidae). The stingless bees were considered the legitimate pollinators.
Starting Page	441
Ending Page	448
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1590/S0100-84042002012000008
Alternate Webpage(s)	http://www.scielo.br/pdf/rbb/v25n4/a08v25n4.pdf
Alternate Webpage(s)	https://doi.org/10.1590/S0100-84042002012000008
Volume Number	25
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article