CHARACTERISTICS OF NEW VARIETIES OF LINSEED (LINUM USITATISSIMUM L.)OF BELARUSIAN SELECTION BONUS AND SLAVYANIN IN ACCORDANCEWITH THE RESULTS OF THEIR STATE VARIETY TESTING

Abstract

An urgent task for a sustainable increase in yield and product quality per unit area is the creation of crop varieties
with high potential productivity. However, its implementation depends both on the conditions of cultivation and
on the ability of the plants themselves to withstand environmental stresses. The analysis of the results of testing the
varieties of linseed (Linum usitatissimum L.) Bonus and Slavyanin in seven state variety plots in 2019—2021 was carried
out, their assessment was given in terms of plasticity and stability parameters. It was noted that the productivity of  varieties Bonus and Slavyanin was higher than that of the control variety Salyut by 0.86 and 0.52 c / ha, respectively,
in 2019, by 0.36 and 0.65 c / ha, respectively, in 2021, by 0.34 centners. /ha of the Slavyanin variety in 2020, while the
value of this indicator for the Bonus variety is at the control level (+0.03 c / ha). The values of the average variety
yield were 12.29—16.41 c / ha. The variety Slavyanin was selected, in which the ratio of productivity to the average
variety in all years of research exceeded 100 %. It has been established that the entire set of studied varieties is characterized
by regression coefficient values close to one (bi = 0.96—1.02), which indicates their high ecological plasticity.
The stability coefficient for oil flax varieties was approximately at the same level and had values of 9.13—10.32. Differences
in varieties were found in plant height (59.1—62.1 cm), weight of 1000 seeds (6.09—6.64 g), and duration of
the growing season (87.2—92.0 days). The data obtained indicate the prospects for the cultivation of linseed varieties
Bonus and Slavyanin in agricultural organizations of the republic and the possibility of obtaining high and stable
yields of this crop.

Fig. 1. Table 4. Ref.: 9 titles.