FOOD AND SEED PRODUCTIVITY OF ALFALFA GERMPLASM UNDER INCREASED SOIL ACIDITY

Article language

українська

Print date

11.07.2025

Date posted online

12.07.2025

Institution

Institute of Feed Research and Agriculture of Podillia of NAAS

Bibliography

REFERENCES

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Section

SOURCES AND DONORS

Abstract

Goal. To assess the feed and seed productivity of alfalfa starting material of different eco-geographical origins.

Results and Discussion. Based on results of studies of alfalfa germplasm of different eco-geographical origins under natural increased acidity of the soil solution (pH 5.2-5.3), promising starting materials were identified; they were superior to the check variety, ‘Syniukha’, in terms of feed productivity (which was higher by 7-92% or 0.07-0.9 kg/m²) and seed productivity (which was higher by 8-79% or 2.7-26.8 g/m²) in two years of using the grass canopy. We observed that most of the studied accessions (for example, ‘Radoslava’, ‘Aliia’ and others) showed their maximum feed productivity in the first year of using the grass canopy (2021), while in the second year, the feed productivity was slightly reduced, despite improved wetting. However, some of the collection acessions responded positively to this factor and, accordingly, the dry matter output was slightly higher than in the first year of using the grass canopy (‘Elehiia’, ‘Intryha’, ‘Mariskabul’, etc.). It should also be noted separately the heterogeneity of seed formation by plants of the collection accessions. Some yielded relatively stably over the years, others reached the maximum productivity in the first year of using, while in the next year with better conditions, on the contrary, their productivity decreased, apparently because of depletion of the root layer for certain nutrients; most of the accessions showed their maximum productivity in the second year of using.

Conclusions. Based on the results of assessments, valuable starting materials were identified; they showed sufficiently high feed and seed productivities: ‘Radoslav’a (Ukraine), ‘Synia 2’ (Ukraine), ‘Elehiia’ (Ukraine), ‘Zaikevycha’ (Ukraine), ‘Mediya’ (Russia), ‘Flandria’ (France), ‘Cordoba’ (Argentina), ‘Mariskabul’ (Bulgaria), ‘Ferax 58’ (Canada), ‘Grilys-1’ (clone No. 3) (Sweden), ‘Mistseva’ (Brazil), and ‘Mistseva’ (Turkey). These accessions are proposed for use in breeding when creating purple medic varieties that would be tolerant to increased soil acidity.

Keywords