Abstract

VAZQUEZ GONZALEZ, Gabriel et al. The Tetranychus urticae Koch effect on the quality of the flower stem of 15 rose cultivars. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.4, pp.833-844. ISSN 2007-0934.

The intensive cultivation rose (Rosa x hibrida) in Tenancingo and Villa Guerrero, State of Mexico, Mexico, it is significantly affected by Tetranychus urticae Koch (Acari: Tetranychidae), known as red spider. The objective of this research was to determine the tolerance to attack red spider and its effect on the quality of the floral stem 15 rose cultivars. Vegetative buds of the aforementioned cultivars grafted in the pattern Manettii (Rosa sp.) were established in pots in a greenhouse. The plants were infested with the mite when the flower bud reached 10 cm, then make weekly counts and evaluate the plant cutoff. Three experiments conducted in spring 2010, autumn 2010 and spring 2012, the number of mites per plant and six variables associated with quality floral stalk were evaluated. The results showed differential tolerance among cultivars; the ratchet variety was less tolerant and showed 3 times mites ambiance, the more resistant. Mite infestation was significantly correlated with number of petals, number of productive stems and stem diameter. The leaf area and chlorophyll content were not decisive in the preference of mites, perhaps were intrinsic variations among cultivars as total phenol content.

Keywords : floriculture area of the state of Mexico; flower production cycles; multivariate analysis; Rosa x hibrida cultivars; Valles Altos of Mexico Center.

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