Varietal identification of flax seeds batches in primary seed breeding of the Russian Federation research institutions

Abstract

Relevance. This work is aimed at carrying out varietal identification and assessment of the uniformity of the main grading factors of updated seeds from primary seed breeding of the Russian Federation research institutions. The studies were carried out under field conditions on medium sod-podzolic loamy soil in the Tver region.
Methods. Sowing was conducted on leveled raised beds in the field according to the method of soil varietal control. To reduce the degree of modification of varietal characteristics, a square sowing method with a feeding area of each plant of 2.5 x 2.5 cm was used.
Results and discussion. It was established that the separate divisions of the NIIL (Pskovskiy NIISKH and Smolenskiy NIISKH of the Federal Scientific Center for Bast Crops), SIBNIISKHIT and the Falenskaya Breeding Station carried out primary seed production on flax at a high scientific and methodological level. 99.5% of 185 seed batches evaluated met the requirements of GOST R 52325-2005 for the OS category. They were characterized by good uniformity in the duration of the growing season, good and satisfactory alignment in plant height. The coefficient of variation of plant height in seed batches averaged from 4.2 to 5.9% over three years, in control seed batches it varied from 3.8 to 6.1%. 93.5% of all seed batches received for varietal identification had good evenness of fiber content in stems. According to the results of the checking seeds for compliance in a generation, the presence of rogue in the amount of 1.4% was determined in the seeds batches of the 1st year Alexandrite variety of the 2018 harvest from the breeding nursery VNIIL.