Resumen

HERNANDEZ-HERNANDEZ, Flor S. et al. Assessment and morphological characterization from isolates of native mycorrhizal associated with tomatillo. Rev. Mex. Cienc. Agríc [online]. 2015, vol.6, n.spe12, pp.2277-2289. ISSN 2007-0934.

The diversity of arbuscular mycorrhizal fungi (HMA) is an alternative for biofertilization in agriculture, which makes necessary to perform studies to assess the relationship of HMA communities regarding soil physicochemical conditions and host. In 2014, at the Universidad Autonoma Agraria Antonio Narro evaluated and morphologically characterized native spores of HMA associated with tomatillo, trap crop (wheat) under controlled conditions. A soil sampling was conducted (profile: 0-30 cm) in Arteaga Coahuila to perform a physicochemical analysis of soil (MO, N, P, K, pH and texture), HMA spores associated to the rhizosphere from tomatillo cultivated and wild were extracted through wet sieving and decanting (sieve opening: 50 µm , 325 µm , 400 µm); grouping by morphology (shape, color and size), a monosporic crop (wheat) was established in pots of 1 L, with sand as substrate (sterile), and Steiner solution modified in phosphorus at 20%. Morphological characterization of mycorrhizal isolates (INVAM, 2014) was performed. 21 morphotypes (12 wild and 9 cultivated) were obtained, of which 9 from the wild system established symbiosis and two from the cultivated system. N, P, K and MO content was higher in the soil from the agricultural system compared to wild; both soils are classified as alkaline. The amount of N, P, K and MO in the two systems where mycorrhizae develops, were factors that influenced on the establishment of symbiosis in wheat and morphological characters of HMA under controlled conditions.

Palabras llave : morphology; potential inoculum; tomatillo; wheat.

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