A study on the adaptive potential of new sterile cytoplasm of Beta patula and Beta maritima L. from wild beets of the genus Beta L.: cold resistance and traits of early sugar accumulation in introduced alloplasmic lines

Purpose. Assessment of new sugar beet breeding genotypes by a set economically valuable traits to determine their suitability for the efficiency process managing production bioethanol with study activity photosynthesis according content chlorophylls and b, early accumulation carbohydrates, tolerance low temperatures, germination apozygous seeds using plasma substituted lines introduced sterile cytoplasms from wild species Beta patula B. maritima L. A9 S vulgaris Owen's cytoplasm. Methods. Field methods were used (pollen-free regime reproduction apozygotic in conditions isolation seed monogermity plants), laboratory (selection best experimental cold resistance, analysis productivity dynamics carbohydrate accumulation). Results. Self-fertile pollen-sterile Sxxzz rr an apomictic method (Yaltushkiv EBS) commercial hybrids selected recessive colour hypocotyl r-r- gametophytic reduced parthenogenesis hybridization scheme: × Mm Rr. The influence cytoplasmic inheritance on resistance indicators was studied samples No. 17225, 17221, 17222, 17220, 17226, 17223 among rates at +4°C varying 14.3 40.3%. Experimental lines, grown pots examined sugars, which had values 16.2 17.6% during four months vegetation; photosynthetic chlorophyll 2.06 1.32%, b 1.02 0.65%. Conclusions. Sugar hybrids, created use cold-resistant beet, thanks natural evolution genome, ensure extension growing season, high productivity, sugars enrichment crop adaptation potential. article contains results accumulation, quality 100% monogermity. Root crops based R+r colour, generative parthenogenesis, specifics under pollen-free regime.