Open Access

ARTICLE

Phytochemical quality of tomato Saladette produced with organic substrates under greenhouse conditions

González B ML¹, M Fortis H¹, P Preciado R¹, MA Segura C¹, E Salazar Sosa¹, JL García H², JR Esparza R³

1 Instituto Tecnológico de Torreón. Carretera Torreón-San Pedro Km. 75 Ejido Ana. Torreón, Coahuila, 27170, México.
2 Facultad de Agricultura y Zootecnia, Unidad Gómez Palacio, Universidad Juárez del Estado de Durango. Ejido Venecia. Gómez Palacio, Dgo., México.
3 Facultad de Ciencias Químicas Unidad Gómez Palacio, Universidad Juárez del Estado de Durango. Av. Artículo 123 S/N. Fracc. Filadelfia C.P. 35010. Gómez Palacio, Durango., México.

Address correspondence to: Dr. Juan Ramón Esparza-Rivera; Teléfono 52-871-7158810, e-mail:

Phyton-International Journal of Experimental Botany 2016, 85(all), 71-78. https://doi.org/10.32604/phyton.2016.85.071

Abstract

The aim of the current study was to evaluate yield and phytochemical quality of tomato fruits produced using organic substrates under greenhouse conditions. The applied treatments (organic substrates) were: T1 (80% River sand + 20% Vermicompost; T2 (90% River sand + 10% Compost); T3 Steiner Solution (80% River sand + 20% Perlite); T4 (80% River sand + 5% Soil + 15% Vermicompost); T5 (85% River sand + 15% Treated manure), and T6 (80% River sand + 5% Soil + 15% Treated manure). We used a totally randomized experimental design, with four replicate treatments. Evaluated variables were: yield, relative content of leaf chlorophyll (SPAD units), total phenolic content, lycopene content and antioxidant capacity. Results showed significant differences in yield, leaf chlorophyll and phenolic contents, and antioxidant capacity. The Steiner solution treatment (8.75 kg/m²) and Treatment 4 (8.70 kg/m², P>0.05) showed a similar yield. On the other hand, the antioxidant capacity of the tomato produced was 142.28- 276.57 μmol Trolox/g dw, and the phenolic content was 16.4-28.9 mg equiv. of gallic acid / 100 g of fresh fruit. Besides, the lycopene content of the fruit produced in the organic substrates was 2.05-2.77 mg/100 g of fresh fruit. Meanwhile, the tomato produced under chemical fertilization (Steiner solution) was 2.93 mg/100 g of fresh product. The results showed that the organic substrates could be used for producing tomato with a high phytochemical quality.

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