A study to identify the most promising hulled and naked oat varieties for the arid conditions of the Middle Volga region was conducted in Samara oblast in 2022–2024. Eleven hulled (Allyur, Vsadnik, Grum, Derbi, Dragun (standard), Kenter, Konkur, Rysak, Stipler, Troika, and Yakov) and four naked (Azil’, Baget, Bekas (standard), and Griva) oat varieties were studied on ordinary chernozem. The average yield over three years was 2.71 t/ha for hulled varieties and 1.69 t/ha for naked varieties,. Kanter and Grum varieties were outstanding among hulled forms with a yield of 3.09 t/ha and Azil’, among naked forms with a yield of 1.97 t/ha. The Grum variety from the hulled group was distinguished by the highest adaptability to weather conditions by yields with the average yield of 3.11 t/ha in contrasting years. Vsadnik, Grum, Stipler, and Yakov varieties were characterized by higher drought tolerance, with yield depression values of 36.0…41.5%. Among naked varieties, Azil’ was distinguished by adaptability with an average yield of 1.97 t/ha in contrasting years; Azil’ and Griva, by drought tolerance (depression 60.2…64.9%). Average weight of 1000 grains in hulled varieties was 34.4 g, which is 1.5 times higher than the average weight in the naked group. The mass fraction of protein in naked forms (15.1%) was 3.1% greater than in hulled varieties. The highest protein derived from oats per unit area was provided by Kanter and Grum hulled varieties (0.365–0.368 t/ha), which is 0.019–0.080 t/ha (5.5–27.8%) more than the other varieties of this group, and 1.4…1.7 times more than the naked varieties. The hulled varieties Kenter and Grum, as well as the naked variety Azil’, are recommended for cultivation in the arid conditions of the Middle Volga region.
Trutneva et al. (Wed,) studied this question.