UDC 635.21:631.526.325
https://doi.org/10.25630/PAV.2024.48.73.005
Mityushkin A.V., Simakov E.A., Zhuravlev A.A., Mityushkin Al-R. V., Gaizatulin A.S., Semenov V.A.
The aim of the research is to assess the degree of manifestation of the sign of darkening of the pulp of tubers of new promising potato varieties, depending on the level of biochemical parameters of raw and boiled tubers. Field experiments were carried out in 2022-2023 under the conditions of an optimal background of mineral nutrition (N90P120K180) on sod-podzolic sandy loam soil of the Pyshlitsy Plant of the A.G. Lorkh Potato Plant of the Moscow region. In the experiment, 13 new promising varieties of potatoes of their own selection and 3 standard varieties of different maturation periods were used: Meteor, Udacha (early); Krasa Meschery, Sadon, Nevsky (medium-early); Arthur, Barin, Vostorg, Vympel, Grand, Mirage, Plamja, Sineglazka 2016, Flagman, Kolobok (medium-ripe). Browning of the pulp of raw tubers of varying intensity was found in seven varieties (Sineglazka 2016, Grand, Meteor, Mirage, Plamja, Barin and Armada) and two standard varieties (Nevsky, Udacha). At the same time, showed darkening in the subcutaneous layer of tubers in the varieties, Udacha, Meteor, Nevsky and Armada, and in the varieties Sineglazka 2016, Mirage, Plamja, Grand and Barin – in the umbilical part of the tubers. The flesh of the raw tubers of the Meteor, Nevsky and Mirage varieties darkens slightly, and in most varieties there is no darkening of the pulp. However, only 4 varieties with darkening pulp of raw tuber (Armada, Mirage, Plamja, Sineglazka 2016) darken the flesh of boiled tuber, while 2 standard varieties also darken. Biochemical analysis of varieties contrasting with respect to darkening of the pulp in the apical and umbilical parts of tubers showed that with an increase in the content of the amino acid tyrosine and the activity of the enzyme polyphenol oxidase, the degree of darkening of the pulp increases. This made it possible to identify the creature.
Key words: potatoes, promising varieties, darkening of the pulp of tubers, biochemical parameters
Simakov E.A., DSci, chief research fellow, head of experimental gene pool department
Mityushkin A.V., Cand. Sci (Agr.), leading research fellow, head of the laboratory for selection of varieties for processing
Zhuravlev A.A., Cand. Sci (Agr.), senior research fellow experimental gene pool department
Mityushkin Al-r V., Cand. Sci (Agr.), senior research fellow, experimental gene pool department
Gaizatullin A.S., Cand. Sci (Agr.), research fellow, experimental gene pool department
Semenov V.A., research fellow laboratory for selection of varieties for processing
FSBSI Federal research centre for potato after A.G. Lorkh
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For citing: Assessment of the darkening of the pulp of tubers of new promising potato varieties. A.V. Mityushkin, E.A. Simakov, A.A. Zhuravlev, Al-r V. Mityushkin, A.S. Gaizatulin, V.A. Semenov. Potato and vegetables. 2024. No4. Pp. 28-31. https://doi.org/10.25630/PAV.2024.48.73.005 (In Russ.).
