Formation of a collection of inbred lines of corn by signs of difference

Abstract

Goal. To classify the genetic diversity of inbred lines of corn according to the characteristics specific to the plant and its organs, and determine the difference in various forms; to form and register a working collection of inbred lines of corn on the grounds of difference. Methods. Systematization and identification of genetic diversity of corn according to morphological and economic characteristics, mathematical (cluster, factor, selective mean values, variance, standard deviation) — to determine the reliability of experimental data. Results. The research was conducted in the laboratory of introduction and storage of plant genetic resources of the Institute of Plant Growing named after V.Ya. Yuriev of NAAS during 2019 – 2021. The soils of the experimental field (the Eastern part of the Forest-Steppe of Ukraine) were represented by typical slightly alkaline chornozem. The signs of difference in corn samples on valuable economic and other morphobiological features were determined. Samples were allocated — standards of signs of the corresponding level, which made it possible to differentiate lines by group of value, and to identify samples with a high level of valuable economic signs. Conclusions. The presence of source material with various features of difference will contribute to the creation of hybrids with different levels of identification features, which will ensure their morphological originality. Systematization of the gene pool by characteristics corresponding to certain areas of selection will increase the efficiency of its involvement in the selection process.