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Revista Brasileira de Fruticultura

Print version ISSN 0100-2945


MONDIN, Mateus; OLIVEIRA, Carlos Alberto de  and  VIEIRA, Maria Lúcia Carneiro. Karyotype characterization of Malpighia emarginata (Malpighiaceae). Rev. Bras. Frutic. [online]. 2010, vol.32, n.2, pp.369-374.  Epub July 02, 2010. ISSN 0100-2945.

Malpighia emarginata Sessé & Mociño ex DC. or West Indian cherry (acerola) is a wild plant originated in southern Mexico, Central America and the northern region of South America. The species was introduced to Brazil about 60 years ago and now the country is the world's biggest producer. Even though the fruits of acerola have high commercial value, as they are an important source of the natural vitamin C, very little chromosome information is available for this species. Previous studies showed that most Malpighia species are diploids, including M. emarginata with 2n = 20. In the present paper, the chromosome number of acerola was confirmed, and for the first time, its karyotype was described, providing the identification of the homologues for the ideogram construction. The acerola chromosomes are small (1.71 to 2.56 µm) and metacentric with the exception of chromosome 2 that is classified as submetacentric. In addition, it is recommended a protocol to produce rooted-plantlets in vitro for mitotic studies that could be also used for micropropagation of acerola.

Keywords : acerola; cytology; chromosomes; in vitro culture establishment; West Indian cherry.

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