Abstract
The research was conducted in 2019–2023 in Belgorod region with the purpose of breeding evaluation of alfalfa cultivars with different resistance to «witches’ broom alfalfa» (WBA). Fifty-two selection samples belonging to species Medicago sativa L., M. varia Mart., M. falcata L. The soil is typical chernozem, humus content (according to Tyurin) 4.7…5.0 %, The year of sowing – 2019. Predecessor – pure fallow. Plots – two-row long 3.5 m, row spacing width – 0.3 m. Repetition – five times. Standard – variety Belgorodskaya 86, sown through 5 numbers. Seeding rate of 100 germinated seeds per 1 linear meter. It was found that the group of varietal samples (n = 10) with low resistance to WBA (variation of prevalence 24.3–34.9 %) is characterized by a greater accumulation of protein (by 44.6 g/kg, t = 8.0, p 0.05), higher foliage (by 4.8 %, t = 3.7, p 0.05) and height (by 25.3 cm, t = 6.2, p 0.05), compared to the group of varieties resistant to WBA (n = 12) (prevalence variation 4.6… 9.1 %). Varieties with high resistance to WBA, belong to yellow and yellow-hybrid alfalfa varieties: Pavlovskaya 7, PO-172, Marusinskaya 425, PO-173, Sarga, PO-174, Victoria, 20–89 H, 193–95d, PO-175, SGPR-8, Vela×Sarga. Varieties with low resistance to VML belong to blue alfalfa and partially – blue-hybrid varieties: Krasnoyaruzhskaya 2, SI-139, SI-138, Plateau, Verko, Luzelle, Salsa, Kreno, Galaxi, Planet.
Published Version
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