For a targeted search of initial breeding material for the quality of soybean seeds, it is necessary to know the patterns of the dependence of the corresponding seed characters on the weather and climatic conditions in a particular region. Global climatic change, the concretization of which is relevant, has a share in this dependence. Thus, the aim of this work was to identify the relationship between the variability of protein and oil content in soybean seeds with climatic parameters in the North Caucasus as well as trends in this variability over a long time period. The study of 1 442 soybean accessions from VIR collection in the Krasnodar region during 1987–2015 had been carried out and the tendencies of the variability of protein and oil content in seeds in this environment were estimated. The regression analysis in differences with forward stepwise selection of variables has been used to construct models for the dependence of the protein and oil content on generalized agrometeorological indices. During 1987–2015, for the period with temperatures above 10 °C, the sums of active temperatures increased by 218 °C/10 years and precipitation decreased by 20.9 mm/10 years. In the dynamics of protein content, a trend has been revealed as an increase by 2.5 % over 10 years, while there is no reliable trend in oil content. The maximum average mean of oil content and the smallest protein were in the middle-maturing accessions (22.2 and 38.8 %), and a relatively high protein content was detected, on average, in the early- (21.6 and 40.0 %) and late-maturing (20.2 and 39.9 %) varieties. The protein content had been increasing with a growth of the duration of the period with temperatures above 22 °C and decreasing with a raise in precipitation over a period of temperatures above 18 °C. The accumulation of oil in seeds was promoted by an increase of the hydrothermal coefficient over the period with temperatures above 19 °C, and, in late-maturating varieties, prevented by a prolonged autumn period with temperatures below 15 °C. Long-term growth in protein content is due to both climatic change and genetic improvement of varieties.

Climate change affects all characteristics of grapes, including the taste of fresh berries and wine. The purpose of this study was to reveal the dependence of fresh grapes taste scores (GS) and wine taste scores (WS) on the origin of the varieties and weather conditions of the harvest year in the northern zone of industrial viticulture in Russia. The material used in the study were taste scores of 232 grape varieties from the Don Ampelographic Collection (47°25′ N 40°03′ E) 1981–2019. The correlation analysis, ANOVA, and regression were used. It was shown that GS negatively correlated with productivity, and WS with the berry mass of variety. In recent decades, GS have increased in groups of varieties of various interspecies origin, and WS have not changed. Regression models revealed that the reason for GS improvement was in the growth of average temperature above 15 °C, while WS varied depending on the sum of precipitation for the period with temperatures above 20 °C, which did not have a reliable trend. Together with data on the growth of grape yield and sugar content, the results indicate that observed climate warming is favorable for grapevine cultivation in the northern zone of industrial viticulture in Russia.

The N.I. Vavilov All-Russian Institute of Plant Genetic Resources (VIR) is developing new approaches to documentation of national cultivars, taking into account recommendations of the International Code of Nomenclature for Cultivated Plants in parallel with methods of genetic certification. The nomenclatural standard of a particular cultivar represented by a herbarium specimen can be used as a reference for verifying authenticity and uniformity of cultivar specimens obtained from various sources. The verification requires fast and reliable methods for cultivar genotyping. This paper presents protocols for modified methods of DNA extraction, PCR-analysis and SSR-genotyping, which allow potato cultivars identification without the use of expensive reagent kits. A set of ten chromosome-specific microsatellite markers was used to study polymorphisms in 66 modern Russian potato cultivars, as well as in 11 pre-cultivars and breeding clones, represented by nomenclatural standards and voucher specimens, respectively. This subset of 77 specimens has demonstrated a high level of polymorphism in ten studied microsatellite loci. The SSR analysis identified 73 alleles; 7.3 alleles per locus were observed on average, the number of which varied from 3 (STG0025 locus) to 11 (locus StI046). The PIC values varied from 0.544 (STG0025 locus) to 0.836 (StI046 locus). The alleles, unique for this subset, were found at six studied loci. The high level of polymorphism at the SSR loci made it possible to unambiguously identify almost every cultivar, with the exception of the expected coincidence of microsatellite profiles of two cultivars, which are somaclonal variants. Using an optimized set of eight microsatellite markers, the genetic relationships of modern Russian potato cultivars were studied.

Генетическое разнообразие сортов картофеля российской селекции и стран ближнего зарубежья по типам цитоплазм

In view of climate change and the active extension of soybean cultivation in Russia, the identification of yield-limiting factors has become a relevant task. The objective of this study was to identify the climatic factors associated with the variation in soybean productivity under the contrasting eco-geographical conditions of the Krasnodar (KR) and Primorye (PR) territories of Russia. An analysis of 424 soybean varieties from the global collection of the N.I. Vavilov Institute (VIR) at experimental stations in KR and PR in 1987–2005 showed that the soybean yields were higher and time to maturity was longer in KR than in PR, while the 1000 seed weight, on average, was irrelevant to the place of cultivation. The agrometeorological regression models of the observations in 1972–2017 of varieties accepted as the standards showed that the yield in PR was positively related to the sum of the temperatures above 10 °C and negatively related to precipitation in October, while in KR it was positively related to the hydrothermal coefficient. The stability of the soybean yield and of the time to maturity were higher in PR than in KR. Under the conditions of increasing temperatures and the absence of reliable trends for precipitation, a lack of moisture becomes a significant disadvantage for soybean in KR, while in PR conditions are improving.

Изучено генетическое разнообразие российских сортов картофеля и сортов селекции стран ближнего зарубежья из коллекции ВИР, которые создавались в 1931–2015 гг. На основании результатов анализа полиморфизма 14 монолокусных ядерных микросателлитов (SSR) проведено генотипирование 113 селекционных сортов. Дополнительно изучено распространение у сортов восьми маркеров трех R-генов, вовлеченных в контроль устойчивости растений к двум карантинным объектам – золотистой картофельной нематоде Globodera rostochiensis и возбудителю рака картофеля Synchytrium endobioticum, которые локально встречаются в отдельных регионах Российской Федерации. У всех изученных сортов, устойчивых к патотипу 1 S. endobioticum, выявлен диагностический компонент маркера Nl-25 гена Sen1, у восприимчивых сортов фрагмент Nl-251400 не обнаружен. Полученные результаты продемонстрировали различную эффективность маркеров генов Н1 и Gro1-4, детерминирующих устойчивость к патотипу Ro1 G. rostochiensis; наиболее перспективно использовать несколько маркеров для детекции нематодоустойчивых сортов. Результаты молекулярного скрининга с шестью маркерами генов Н1 и Gro1-4 позволили детектировать у сортов шесть гаплотипов. Пять гаплотипов включали сорта с различными сочетаниями изученных маркеров, большинство (87,9 %) из этих сортов были устойчивы или слабо поражаемы нематодой. Наиболее многочисленный гаплотип H1/0 включал 76 сортов, у которых не было выявлено ни одного маркера генов Н1 и Gro1-4; 96,1 % из них были восприимчивыми к G. rostochiensis. Обсуждается связь между родословными сортов, временем их создания, составом гаплотипов и устойчивостью селекционных сортов к золотистой картофельной нематоде и возбудителю рака картофеля.