The study specimens of spring oats in the conditions of the arid zone

The results of the study of collecting specimens of spring oats of various geographical origin in the conditions of irrigation of the arid zone are presented. As a result of the studies, differences were found in the duration of the ‘shoot-ejection’ period, the ‘shoots’ and the plant height, depending on the origin of the samples. According to the results of two years of testing, it was established that the shortest ‘germination–ripening’ period was for oat varieties from the USA (no. 13), Altai Territory, the Republic of Belarus (no. 5), the Czech Republic, China, Australia — 80 days, the largest (90 days) among the varieties from the Republic of Belarus (no. 6) and the Ulyanovsk region). The remaining varieties were included in the group of mid-ripening with a duration of 85 days from seedling to maturation. The height of oat plants varied from 0.93 m to 1.40 m. In the evaluation for productive business, specimens no. 4 (Altai region) and no. 6 (Belarus) were singled out. On the basis of the plant’s entity, specimens were noted — no. 2 (Colombia), no. 4 (Altai region), no. 6 (Belarus), no. 7 (Belarus) and no. 14 (USA). Specimens no. 1 and no. 13 from the United States had a high level of blackness. Such a feature as the length of the ear in the majority of varieties varied from 19.6–25.7 cm. Only in specimen no. 13 (USA) it reached a value of 30.4 cm. As a source of precocity, we can use varieties from the USA (no. 13 K-15153), the Czech Republic (no. 10 K-15134), China (no. 12 K-15143), Australia (no. 16 K-15143), the Altai region (no. 3 K-15113, no. 4 K-15114), Belarus K-15265) with the duration of the growing season — 80 days. Specimens no. 4 (Altai region), no. 6 (Belarus), no. 13 (USA) were allocated for a set of economically valuable features