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Guarapuava, Brazil

Preczenhak A.P.,R. Simeao Varela de Sa | Resende J.T.V.,R. Simeao Varela de Sa | Chagas R.R.,R. Simeao Varela de Sa | Silva P.R.,R. Simeao Varela de Sa | And 2 more authors.
Horticultura Brasileira | Year: 2014

The characterization of genotyes from a germplasm bank is the first step to define their use as sources of interesting genes. We evaluated 64 genotypes of mini tomatoes of the germplasm bank of the Universidade Estadual do Centro-Oeste, in Guarapuava, Paraná state, Brazil. The experimental design consisted of randomized blocks with three replications and four plants per plot. Ten genotypes stood out for fruit production, all with yield equivalent to cv. Sweet Grape. Most genotypes presented fruits with 25-30 mm, oblong shape, similar to that observed in the sweet grape cultivar. Three genotypes stood out for the soluble solids content, with 7.13°Brix (6878-49), 7.17°Brix (RVTC-22) and 7.37°Brix (IAC1498-63). The genotypes RVTC-06, RVTC-08, RVTC-11, RVTC-12, RVTC-16, RVTC-20, 2318-43, 2091-44, 2298-45, IAC392-59 and IAC1622-64 exhibited brightness values between 38 and 40, considered appropriate. The red color (a*), was more intense in genotypes 1258-48, 6878-49, IAC392-59, 0224-53, RVTC-25 and RVTC-55. Three genotypes showed fruit with greater vivacity (chroma) (2091-44, 0489-54 and IAC1622-64). The genotypes RVTC-07, IAC392-59, IAC1622-64, RVTC-24 and RVTC-57 presented the lowest values of Hue, thus providing stronger red color. Based on these results, the genotypes of mini tomatoes showed promising agronomic and qualitative characteristics, besides good adaptation to soil and climatic conditions of the region. Although diverse market niches exist for this segment, no ideal standard of format has been defined. So, many characteristics may be used to improve the production, flavor and appearance, expanding the market.

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