Abstract
The aim of the research is to identify durum wheat varieties that consistently form grains with a high number of falls (NF).The quality of durum wheat grain is formed under the influence of the genotype and environmental conditions during the period of grain filling and maturity. Abundant rainfall, dew, temperature fluctuations, stimulate seeds already at the root to complete maturation (bypassing or reducing the dormant stage) and germination. This leads to a decrease the main parameters of quality of grain and pasta.Several methods are used for the phenotypic assessment of pre-harvest germination resistance ( RPHGG) in wheat, including FN determination by Hagberg-Perten. In RPHGG breeding, this is the main method for evaluating breeding material. The experiment included 19 varieties and breeding lines of the Samara SRIA, studied in the period 2015-2019 according to the method of competitive variety testing. Samples for analysis were taken from two non-contiguous repetitions after harvesting and cleaning the grain. The study showed significant effects on the value of flag indicators of the year (80.3% of the total variation), genotype (10.7%) and their interaction (8.8%). In terms of stability parameters – coefficient of variation (CV), homeostaticity (Hom), the degree of variety superiority (Pi), and value of the trait on average for the experiment, the 1916d-17 breeding line was clearly distinguished. Based on these properties, the lines 1919d-9 and 1916d-10 are considered to be promising genotypes for use as source material.
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