ANATOMIA FOLIAR DE SOJA INFESTADA COM Pratylenchus brachyurus

Abstract

Pratylenchus brachyururs is a plant-parasitic nematode that can cause significant losses in several cultures. Advances in technology indicate that unmanned aerial vehicles (VANTs) can be used in the management of P. brachyurus in soybeans. The potential for using unmanned aerial vehicles depends on the ability to detect sensors of the anatomical, morphological and physiological changes caused by the attack of the nematode. However, they have not yet been documented as changes caused by P. brachyurus in the aerial part of plants and their possible possibilities for the use of detected sensors to detect and quantify stress. Thus the objective was described as changes in the ultrastructure of soybean infested with P. brachyurus. The experiment was carried out in a greenhouse from January to March 2019. A conventional soybean cultivar Bônus IPRO was used. The experimental design was randomized blocks with four treatments and seven replications. The treatments were artificially infected with 700 specimens per plant. The evaluations were carried out at the R2 stage. It was found that the nematode caused anatomical damages in the inoculated treatments, expansion of the adaxial epidermis and increase in the intracellular spaces when compared to the control treatment, which can interfere with the physiological processes of the plant. Thus, the attack of P. brachyurus manifests indirect symptoms in the aerial part of the plants that can be used as tools for the use of VANTs in the identification of its infestation.