BREEDING EVALUATION OF HIGH- AND MEDIUM AMYLOSE VARIETIES FROM RICE GENE POOL FOR FORMIMG FEATURE COLLECTION
The domestic branch of rice growing is provided with seeds of high yielding rice varieties, while the improvement of the assortment of rice must be carried out taking into account the demand of rice producers. FSBSI «ARRRI» formed collection of rice varieties, with a total volume of more than более 6,8 thousand samples. The institute conducts screening studies of genetic diversity of rice by classical breeding methods on a number of parameters, which allows combining the samples into groups of feature collections as sources of agronomic traits for breeding and basic research. The article presents data on the study of agronomic traits of samples of the Oryza sativa with an increased content of amylose. The set of varieties is represented by genotypes of different ecological and geographical origin of Indian and Japanese subspecies. The maximum values for the content of amylose (from 25.0 to 30.0%) were found in most samples of the Philippine group. The complex study of introduced genotypes made it possible to select varieties suitable for further breeding work and DNA analysis. Selection of introduced genotypes was formed for a feature collection for a high content of amylose and productive forms for creating donor samples of agronomic traits for improving domestic varieties for the conditions of southern Russia.