The objective of the research was to understand diversity Rhizoctonia solani in potato crops Nariño. Tubers with sclerotia were collected from farms municipalities Pasto, Ipiales, Tuquerres and Ospina. In a laboratory, strains grouped categories, selecting 30 for morphological pathogenic studies. an PDA medium, daily mycelia growth rate (DMGR), pigmentation, texture, pattern (GP) characteristic...

Reactive oxygen species (ROS), especially hydrogen peroxide, H2O2, act as signaling molecules to widely mediate growth, development, and stress response of plants. In the present study, internal ROS accumulation, effects exogenous H2O2 treatment, expression key tuberization-related genes, effect knockout Solanum tuberosum self-pruning 6A (StSP6A) on H2O2-induced tuber formation were investigate...