Abstract
Purpose – assess the capacities of a particular genotype and to offer breeders starting material that is adapted to a region where a would-be variety will be created.Materials and Methods. To accomplish this purpose, an environmental trial of collection bean (Phaseolus L.) accessions was carried out in four locations, which that differ in climatic characteristics: Plant Production Institute named after V.Ya. Yuriev NAAS – Kharkiv, eastern Forest-Steppe; Ustymivka Experimental Station of Plant Production of the Plant Production Institute named after V.Ya. Yuriev NAAS – Poltavska Oblast, southern Forest-Steppe; Bukovyna State Agricultural Experimental Station of the Institute of Agriculture of the Carpathian Region of NAAS – Chernivtsi, Woodlands; Plant Breeding and Genetics Institute -National Center of Seed and Cultivar Investigation – Odesa, southern Steppe.Results and discussion. Genotypes and test environments were assessed by GGE biplot method, which made it possible to graphically visualize the environmental trial results. To create varieties for different zones of Ukraine, we recommend to select parents with due account for weather conditions: South of Ukraine – drought-resistant genotypes with high heat resistance (Holberg); Woodlands – intensive genotypes (Pervomaiska, Mistseva Bomba 5); Forest-Steppe –stable genotypes with high drought resistance (Holberg, Nadiia, UD030104).Conclusions. From the GGE biplot results, the environmental trial locations, which allow one to fully assess the adaptability of a genotype, were identified: Plant Production Institute named after V.Ya. Yuriev NAAS and Ustymivka Experimental Station of Plant Production. In their conditions, stable genotypes were distinguished: Holberg, Otrada, UD0300104, Bogema, UD0300152, N 201-15 and Sinelnikivska 8. Of these accessions, Holberg, Otrada, UD0300104 and Sinelnikivska 8 combined stability and high performance, approaching the "ideal" genotypes Holberg and UD0300104.
Highlights
Evaluation of the “genotype × environment” interaction is very important for selection of starting material used in breeding [1, 2]
In 2015, the environmental trials of the model population of bean were conducted in four environments (PPI, Ustymivka Experimental Station (UES), Bukovina State Agricultural Experimental Station (BSAES), PBGI) differing in the temperature-water regime during the period of growth and development of the crop
The environment trials of the bean genotypes at the sites differing in the climatic conditions ensured comparison of their informativity
Summary
Evaluation of the “genotype × environment” interaction is very important for selection of starting material used in breeding [1, 2]. Most modern bean cultivars having sufficiently high potential yields are characterized by low homeostaticity and adaptability to unfavourable environmental factors [5]. The effects of abiotic factors on the yields of bean accessions were studied [7], and, as a result, a trait collection of Phaseolus vulgaris L. was compiled [8]. This collection became the basis of the model population [9], in which each genotype is original and has an extensive range of adaptive features allowing it to adapt to the growing conditions
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