Abstract

VAZQUEZ-CARRILLO, María Gricelda; RUBIO-COVARRUBIAS, Oswaldo Ángel  and  SANTIAGO-RAMOS, David. Physicochemical quality of tubers of potatoes produced with and without anti-aphid mesh. Rev. Mex. Cienc. Agríc [online]. 2019, vol.10, n.1, pp.215-220. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v10i1.1238.

The physicochemical characteristics of potato tubers have been diminished by the presence of purple tip disease (PMP). Currently, the use of anti-aphid meshes is a strategy that protects plants from the insects that transmit the PMP. The objective of this work was to evaluate the physicochemical characteristics of potato tubers and their fried foods, produced with and without the protection of an anti-aphid mesh in Metepec, State of Mexico. Five genotypes were studied (Fianna, Nau, 5-10, 8-65, 99-39). The anti-aphid mesh reduced the photosynthetically active radiation 34.5% and consequently reduced the starch accumulation and the yield of potato chips. The PMP infected the plants that were not covered, so that the tubers presented internal staining and higher content of reducing sugars (19.67 g kg-1) than the tubers of covered plants (4.77 g kg-1); however, in both conditions the tubers had similar contents of total phenolic compounds. The protection of plants with anti-aphid mesh could be an alternative to produce tubers with acceptable quality for fresh consumption and the production of potato chips.

Keywords : anti-aphid mesh; potato chips; purple tip of the potato; reducing sugars; starch.

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