Vesicular-arbuscular mycorrhizal, dark septate endophytes and root anatomy in Fragaria ananassa var. Camino Real (Rosaceae) in the province of Tucumán, Argentina

Abstract

In the province of Tucumán strawberry cultivation occupies an area of 350 hectares. It is a winter crop, with periodic harvests since late May to November inclusive. To avoid this discontinuity of production, a late variety (Camino Real) was added to the spectrum of early varieties (Fortuna and Festival). This paper aims to evaluate the vesicular-arbuscular mycorrhiza, dark septate endophytes and characterize the radical anatomy in Fragaria ananassa variety Camino Real in the province of Tucumán. The sampling was carried out at INTA-EEA Famaillá, Tucumán, Argentina. The radicals systems corresponding to 20 individuals were collected and treated with conventional techniques. The root systems of the variety Camino Real, show cortical parenchyma cells colonized
by vesicular-arbuscular mycorrhizae which have two simultaneous morphological types: Arum and Paris. The Arum morphology is the most frequent. In addition, the cortical tissue has dark septate endophytes. The radical anatomy of the primary structure presents a typical histology with diarca to tetrarch stela, while the secondary root structure show different stages of growth with traces of epidermis and cortical parenchyma attached to the polidermis in development. The vesicular-arbuscular mycorrhizae, dark septate endophytes and radical anatomy of Fragaria ananassa var. ‘Camino Real’ were described for the first time for Argentina.