Ecological Study of Alfalfa Varieties of Different Geographical Origin in the South of the Central Russian Upland
Bibliographic record
Abstract
Abstract Research was conducted to study the fodder and seed productivity of alfalfa varieties, alfalfa sowing, and yellow alfalfa of different geographical origin in the potential range of harmful viral phytoplasma infections (“witch’s broom alfalfa”) in the southern Middle Russian uplands and to identify the most productive and resistant varieties for further breeding. Seventeen alfalfa varieties were studied in seed and fodder use. We evaluated varieties and breeding patterns of the Middle Urals (Sarga, Victoria, 193-95 d, 20-89 N, Vela × Sarga), Moscow suburbs breeding (Nakhodka, Vega 87), breeding of the Central Black Earth region (Belgorod 86, Krasnoyaruzhskaya 1, Krasnoyaruzhskaya 2, Pavlovskaya 7), Canada (Dakota), Germany (Verko, Plato), France (Luzelle, Galaxy), and Saratov region (Artemida). Under the conditions of the southern Srednerusskaya Upland, varieties and variety samples of the Ural breeding have the most stable seed yield: at the level of 76.3–84.2 g/m2 on average over 3 years of research. In terms of total dry matter yield over a 3-year period, they are not inferior to domestic and imported varieties, those most widely distributed in the Central Black Earth Region (CCR), and allow for an average 3-year yield of 516.8–537.9 g/m2 dry matter. Among the varieties of hybrid alfalfa and sowing alfalfa, varieties of European selection are most susceptible to virus-phytoplasma infections (VPL): the prevalence of VPL for 3 years is 12.1–16.3% on average. In this group of varieties, varieties of heterohybrid cultivars and breeding samples of Ural alfalfa variegated varieties are least affected: the incidence of VPL averaged over 3 years is 3.3–4.5%. The lowest incidence of VPL was found in the alfalfa yellow variety Pavlovskaya 7, with an average incidence of 1.6% over 3 years. In order to increase alfalfa seed production and its resistance to VPL in the south of the Srednerusskaya Upland, the Ural varieties and selection samples Sarga, Victoria, 193-95 d, 20-89 H, Vela × Sarga, and the yellow alfalfa variety Pavlovskaya 7 should be used in breeding work.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.003 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".