CHANGE IN VARIETAL PURITY OF FLAXSEEDS WHEN THEY ARE CLOGGED WITH SEEDS OF INTER-GARLIC FORM OF FLAX IN THE PROCESS OF THEIR REPRODUCTION IN PRIMARY SEED FARMING NURSERIES

Abstract

The most common reason for the appearance of varietal impurities in flax crops is the non-compliance with the main provisions of on-farm control when working with two or more varieties of flax on the farm or during variety changer. Field testing does not always give a correct assessment of the condition of crops by varietal purity. Due to the unevenness of the crops in the field, the morphological assessment of individual plants with a handful analysis does not allow to reliably determine the percentage of biological impurities of the baggage type. The purpose of the research was to study the dynamics ofpropagation of varietal pollutant-type admixture, which has a yellow color of seeds, in the seeds of flax littered by it at a 3-year reseeding. Clarify the index of varietal purity of flax seed OS category in GOST R 52325-2005. Studies were conducted in 2015-2017 in the field of the Experimental Field of the Institute of Flax (Torzhoksky District, Tver Region). The object of the study was plants and seeds of flax Antey variety (control). The use of varietal mixtures with marker traits made it possible to accurately determine its content in the crop during the successive propagation of seeds in primary seedfarming nurseries. It has been established that over three years of reproduction, the amount of varietal impurity in the crop according to the experimental variants with the impurity content from 0.2 to 0.7% increased by 0.2 ... 0.3%; with a clogging of 1.0%, there was a more significant increase in its yield by 0.4% in 2015 and by 1.6% in 2017. Under conditions of excessive moisture in 2016, the content of varietal admixture seeds decreased by 0.1% compared to the previous year.