ISHS Acta Horticulturae 821: International Symposium on Tomato in the Tropics
YIELD AND QUALITATIVE CHARACTERIZATION OF FRESH MARKET TOMATO HYBRIDS OF ITALIAN AND SANTA CRUZ TYPES |
| Authors: | F.H. Shirahige, P.C.T. Melo, A.P. Jacomino, A.M.T. Melo , L.F.V. Purquerio, M.S. Roquejani |
| Keywords: | Solanum lycopersicum L., thinning, vegetable crops, fruit quality, plastic house |
| Abstract:
The objectives of this work were to determine the effect of cluster thinning on yield and its components on tomato hybrids of the Italian and Santa Cruz types and perform the qualitative characterization of the fruits. Treatments consisted of 14 indeterminate fresh-market tomato cultivars (ten experimental hybrids and four commercial cultivars). A randomized complete block design was used in this trial with split-plots and 14 treatments replicated three times. The hybrid cultivars were allocated in the plots and the fruit thinning effect (with and without manual fruit thinning) was observed in the subplots. Total and marketable yields, number of fruits per plant, and average fruit weight were measured. For quantitative characterization, soluble solids concentration, titratable acidity, ascorbic acid content, tritable acidity, lycopene and beta-carotene contents were measured. Except the average fruit weight, all yield components were not affected by fruit thinning. For yield parameters, Italian hybrids ‘THX-08’ and ‘THX-07’ showed similar performance for all evaluated characteristics to their checks. As for the Santa Cruz hybrid type, hybrid ‘THX-06’ proved to be competitive in relation to the checks for total and marketable yields and average fruit weight. Concerning the quality parameters, were not found statistically significant differences among Santa Cruz hybrids. However, for the Italian type, experimental hybrids ‘THX-07’ and ‘THX-05’ displayed an outstanding performance for lycopene and ascorbic acid contents and also showed yield potential comparable to the commercial checks ‘Netuno’ and ‘Giuliana’. | |
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