Soybean Genpool From Vir Collection for the Promotion of Agronomical Area of the Crop To the North
2018
Seferova, I.V. | Vishnyakova, M.A.
The results of a long-term study of early and ultra-early maturated accessions of soybean from VIR collection in the North-West of the Russian Federation, in Leningrad Region on experimental VIR plots (59º44'N, 30º23'E) are summarized. From 1999 to 2017 about 2300 accessions previously described as early-ripening in Krasnodar Region have been assessed. The ability of the accessions to form a mature seeds in the North-West of the Russian Federation was evaluated. Commercial varieties and breeding materials, mostly created in comparatively northern countries of the world, or in the Russian Federation not higher of 48° N, reached full seed filling in different years of study. They have weak photoperiodic sensitivity, low requirements for temperature conditions, are sensitive to excess precipitation, are responsive to inoculation with commercial strains of rhizobacteria. If to count the seed yield per hectare in certain years it reached 2.7 t/ha even more, the yield of hay was 11.2 t/ha. The protein content in seeds reached 45% and above, in a dry green matter of 23.5%. This identified gene pool – more 340 accessions, assessed by a number of traits, can serve as a valuable initial material for creating varieties recommended for cultivation soybean on the northern border of its agronomic area, and also for the promotion of the crop to the higher latitudes.
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