Portal de Pesquisa da BVS Veterinária

Braz. J. Biol.; 79(2): 358-360, abr.-jun. 2019. ilus

Artigo em Inglês | VETINDEX | ID: vti-740911

Resumo

Malpighiaceae contains approximately 1300 species in 75 genera, which are predominantly distributed in the neotropics ( Anderson, 2013 ). These genera are distributed among 14 mostly well-supported clades, among them the aspicarpoid clade, comprising Aspicarpa Rich., Camarea A.St.-Hil., Cottsia Dubard. & Dop., Gaudichaudia Kunth and Janusia A.Juss. ( Davis & Anderson, 2010 ). This clade is characterized by the presence of cleistogamous flowers in some species, in addition to chasmogamous flowers. According to Anderson (1980) , the anther of a cleistogamous flower does not open to release pollen grains; instead, a pollen tube grows down through the filament and into the receptacle of the flower, penetrating the ovule and causing fertilization. The cleistogamous flowers produce viable seeds and are responsible for most of the seed production per specimen ( Anderson, 1980 ). Janusia guaranitica (A.St.-Hil.) A.Juss. has cleistogamous flowers with only one stamen and two carpels, which are produced before the chasmogamous flowers and often in great numbers. According to Lorenzo (1981) , the ovules of both types of flowers in J. guaranitica are identical. Three specimens of J. guaranitica found on public streets in Araras, in the state of São Paulo, Brazil, were transplanted into a Garden on the Universidade Federal de São Carlos, campus Araras ( Figure 1 A), locaded in an area with remnants of Semidecidual Seasonal Forest. This Garden is close to the portion which constitutes the Forest Reserve of the campus, with an approximate altitude of 650m, soil red dystrophic latossolic, clayey to very clayey texture, grades of sands between 32.9 and 35.1% (mass), grades of clay between 48.86 and 49.56% (mass) and organic matter concentration between 26.8 and 32.2 g dm-3 ( Yoshida & Stolf, 2016 ). The specimens were transplanted into a more shaded and humid garden area, compared to the public streets where they were initially found. The specimens were not irrigated, being exposed to the rainfall regime of the area. Before transplanting, the reproductive structures were preserved in 70% alcohol, and vouchers were collected using standard protocols for the collection and preparation of botanical material. Voucher specimens were deposited in the herbarium of the Centro de Ciências Agrárias (CCA) at the Universidade Federal de São Carlos (UFSCar, HARA herbarium)(AU)

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