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PERFORMANCE AND ADAPTABILITY OF SPRING BARLEY ACCESSIONS IN MULTI-YEARS TRIALS IN THE CENTRAL FOREST-STEPPE OF UKRAINE

PERFORMANCE AND ADAPTABILITY OF SPRING BARLEY ACCESSIONS IN MULTI-YEARS TRIALS IN THE CENTRAL FOREST-STEPPE OF UKRAINE

Institution

VM Remeslo Myronivka Institute of Wheat of NAAS

Section

SOURCES AND DONORS

Abstract

The paper covers the results of long-term (2012-2016) investigations performance and adaptability of 130 spring barley collection accessions of different origin at VM Remeslo Myronivka Institute of Wheat of NAAS (MIW).

Goal. To identify sources of increased productive and adaptive potentials for spring barley breeding for the conditions of the Central Forest-Steppe of Ukraine.

Results and Discussion. The weather conditions in the research years were characterized byh considerable variability in hydrothermal parameters and ranged from dry (2013) to moist (2014) ones. In general, precipitation in the research period was unevenly distributed during the spring barley growing season. Over the years, the yields of accessions under investigation were influenced by a complex of abiotic and biotic factors: insufficient rainfall and high air temperatures, lodging, disease progress (powdery mildew (Blumeria graminis (DC.) Golovin ex Speer f. sp. hordei Em. Marchal), net blotch (Pyrenophora teres Drechs.), spot blotch (Bipolaris sorokiniana (Sacc.) Shoem.), leaf stripe (Pyrenophora graminea Ito & Kurib.) and leaf rust (Puccinia hordei Otth.)). The average yield in the experiment varied from 522 g/m2 in 2015 to 336 g/m2 in 2013; the variability between accessions within a year was 348 - 502 g/m2. The absolute maximum and minimum yields ranged from 803 g/m2 in variety Сonchita (DEU) in 2015 to 156 g/m2 in line BL 01-75/99-2 (UKR) in 2013. To interpret the experimental data, a GGE biplot model was used, which allowed characterizing and ranking the accessions by yield capacity and adaptability. The results suggest that levels of yield capacity observed in the accessions characterize the general adaptive capacity of the genotypes studied in the Central Forest-Steppe of Ukraine.

Conclusions. Using GGE biplot, we thoroughly evaluated 130 spring barley collection accessions of different origin for productive and adaptive potentials in 2012-2016, which were contrastive in terms of effects of biotic and abiotic factors. We identified genetic sources that combined high yield capacity with its stability: Kozvan (UKR), Siaivo (UKR). They were considerably superior to other accessions by this combination and are of the greatest value for breeding in the Central Forest-Steppe of Ukraine.

Over the research years, accessions Modena (AUT), B 1215 (USA), Alehro (UKR), C 1000/2 (UKR), Antek (POL), Statok (UKR), Vladimir (RUS), Ahrarii (UKR), Ladny (BLR) and others gave medium yields comparable with those of standard Vzirets (UKR) and Komandor (UKR). However, most of them were inferior to the standards in terms of stability. These accessions can be involved in creation of starting material, but here one should take into account the specific response of a given genotype to the conditions in some research years, and it should serve as a basis of the selection  principle when choosing them as parents for crossing.

Keywords

spring barley, collection accessions, genetic sources, yield, adaptability, abiotic and biotic factors, GGE biplot