Comparative analysis of five rice campaigns in experimental lines of work of INTA Corrientes Experimental Station. Proposal for identification by “blindly” attributes

Rice (Oryza sativa L.) is an herbaceous plant, cultivated in a wide variety of regions and climates. In our country, its production is concentrated on the littoral. As white rice, it is a primary source of food for most of the world population. In addition, it can be consumed as integral rice and is the raw material for a wide range of industrialized products. In the present study, we worked with samples of polished rice from promising lines provided by the National Institute of Agricultural Technology, Agricultural Experiment Station Corrientes (INTA-EAA), corresponding to five campaigns from 2016 to 2021, plus nine coded samples from the 2021 campaign. In the tests carried out, five culinary quality attributes were compared: gelatinization time, apparent water absorption, expansion ratio, weight of a thousand grain and gelatinization temperature. The techniques used are simple, friendly to the environment and low cost. Through the analysis of hierarchical conglomerates (or Cluster Analysis) using Software R (GUI RStudio 2022.02.3+492 "Prairie Trillium" Release), it was possible to analyze individual behavior and establish comparisons between the set of variables previously studied for each campaign and classify the nine coded samples received. Significant differences were found in the variables studied, with p