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Horticultura Brasileira

versão impressa ISSN 0102-0536

Resumo

FARIA, Ricardo T; COLOMBO, Ronan C  e  HOSHINO, Rodrigo T. Oncidium sarcodes x Oncidium Aloha 'Iwanaga': new option of Oncidium hybrid. Hortic. Bras. [online]. 2015, vol.33, n.1, pp.131-134. ISSN 0102-0536.  http://dx.doi.org/10.1590/S0102-053620150000100021.

Oncidium genus has about 315 species and hundreds of hybrids. Breeding of native species with ornamental potential is an important strategy to ensure a better adaptability of cultivars to Brazilian conditions. Among them, the Brazilian species Oncidium sarcodes stands out for long stems with large yellow flowers with brown stains. The aim of this work was to characterize the progenies resulting from the oncidiums hybridization in order to select a potential cultivar. Selected O. sarcodes plants were used as the female parental and O. Aloha 'Iwanaga' as the male parental. Pollination was manually controlled and the obtained seeds were germinated in vitro. After seedling establishment in vitro and acclimatization in the greenhouse, they were transplanted to plastic pots with volume of 1000 mL using as substrate pine bark and coconut fiber 1:1 (v/v). For the morphological description of the hybrids, 10 progenies were selected to evaluate the characteristics of vegetative development and inflorescences. Flowering occurred 48 months after germination, from December to January, flowers with durability of 25 to 30 days. The crossing brought flowers to a greater balance and symmetry between the verticils. The sepals and petals have yellow gold color with brown spots, with well-defined limits between the colors.

Palavras-chave : Floriculture; breeding; orchid; crossing; controlled pollination..

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