2021, Jerzy Nawracała, Danuta Kurasiak-Popowska, Tadeusz Łuczkiewicz

2021, Jerzy Nawracała, Danuta Kurasiak-Popowska, Tadeusz Łuczkiewicz

2025, Rychel-Bielska, Sandra, Książkiewicz, Michał, Kurasiak-Popowska, Danuta, Tomkowiak, Agnieszka, Bielski, Wojciech, Weigt, Dorota, Niemann, Janetta, Surma, Anna, Kozak, Bartosz, Nawracała, Jerzy

AbstractEurope is highly dependent on soybean meal imports and anticipates an increase of domestic plant protein production. Ongoing climate change resulted in northward shift of plant hardiness zones, enabling spring-sowing of freezing-sensitive crops, including soybean. However, it requires efficient reselection of germplasm adapted to relatively short growing season and long-day photoperiod. In the present study, a PCR array has been implemented, targeting early maturity (E1–E4, E7, E9, and E10), pod shattering (qPHD1), and growth determination (Dt1) genes. This array was optimized for routine screening of soybean diversity panel (204 accessions), subjected to the 2018–2020 survey of phenology, morphology, and yield-related traits in a potential cultivation region in Poland. High broad-sense heritability (0.84–0.88) was observed for plant height, thousand grain weight, maturity date, and the first pod height. Significant positive correlations were identified between the number of seeds and pods per plant, between these two traits and seed yield per plant as well as between flowering, maturity, plant height, and first pod height. PCR array genotyping revealed high genetic diversity, yielding 98 allelic combinations. The most remarkable correlations were identified between flowering and E7 or E1, between maturity and E4 or E7 and between plant height and Dt1 or E4. The study demonstrated high applicability of this PCR array for molecular selection of soybean towards adaptation to Central Europe, designating recessive qPHD1 and dominant Dt1, E3, and E4 alleles as major targets to align soybean growth season requirements with the length of the frost-free period, improve plant performance, and increase yield.

2019, JULIUSZ PERNAK, BARTOSZ ŁĘGOSZ, JERZY NAWRACAŁA, KRZYSZTOF KUBIAK, KATARZYNA MARCINKOWSKA, TADEUSZ PRACZYK

2024, Grynia, Joanna, Tomkowiak, Agnieszka, Kwiatek, Michał Tomasz, Nawracała, Jerzy, Rychel-Bielska, Sandra, Kowalczewski, Przemysław Łukasz

2024, Kurasiak-Popowska, Danuta, Katańska-Kaczmarek, Agnieszka, Matysik, Przemysław, Stefański, Piotr, Przybył, Patrycja, Skotarczak, Ewa Alicja, Nawracała, Jerzy

Poland is one of the northernmost countries in the world where soybean breeding is actively conducted. A large collection of soybean genotypes was analyzed in three locations in Poland during the 2022–2023 growing seasons. The objective of this research was to determine the stability of yield, as well as the protein and fat content in the seeds of 280 genotypes. The phenotypic correlations across genotypes and environments were assessed using the Spearman coefficient. The statistical analysis was provided using the additive main effects and multiplicative interaction model. The stability of genotypes was assessed using the weighted average of absolute scores. The main factor differentiating the results between locations was the variation in weather conditions. The variety Karok, which ranks among the top 10% in genotype selection indices for yield and thousand-seed weight, is recommended based on studies conducted within the Post-Registration Variety Testing System in three voivodeships in Poland. Among the most stable genotypes, in terms of the traits analyzed in this paper, are many registered and currently grown soybean varieties such as Obelix Pompei, Coraline, Kapral, ES Mentor, NS Mercury, Pepita, Pollux, Silesia, and Heihe 45. The yield stability of soybean genotypes during the development of new varieties should be one of the factors analyzed by breeders.