Background. An extremely important task today is to develop new hulless barley cultivars, capable of yielding large and high-quality grain harvests, and introduce them into agricultural production. Objective. The purpose was to study three hulless barley cultivars ‘Omsky golozerny 2’, ‘Omsky golozerny 4’ and ‘Maysky’, developed at Omsk Agrarian Scientific Center, in order to describe their agrobiological characteristics.Materials and methods. The experimental part of the work was carried out in 2015–2017 on the experimental fields of Omsk ASC in the southern forest steppe (third crop rotation after the wheat predecessor; fourth crop after fallow). There were 4 replications on the plot of 10 m2. The seeding rate was 4 million viable seeds per 1 ha. Agricultural practice used in the experiments was conventional for West Siberia. Parameters of stability and plasticity were calculated according to Eberhart and Russell, Wricke; adaptability, according to Zhivotkov; homeostasis, according to Khangildin; stress tolerance and compensatory ability, according to Rossielle and Hemblin.Results. Many years of breeding work at Omsk ASC resulted in the development of three hulless barley cultivars: ‘Omsky golozerny 2’ (listed in the State Register of the Russian Federation for regions 9, 10 and 11), ‘Omsky golozerny 4’ (submitted for the State Crop Variety Trials in 2017), and ‘Maysky’ (not included in the State Register). The new hulless barley cultivar ‘Omsky golozerny 4’, considering its higher productivity (+1.36 g to the reference in 1000 grain weight, and +0.73 t/ha to cv. ‘Maysky’), in the yield of nutrients per area unit equaled the reference ‘Omsky golozerny 2’, but exceeded ‘Maysky’ (+47.2 kg/ha of protein, +390 kg/ha of starch, and +42.4 kg/ha of crude fat). ‘Omsky golozerny 4’ was also characterized by stability (stability = 4.8), increased compensatory ability (3.29) and adaptability (103%). There was an increase in productivity with improved growing conditions (ecological plasticity = 1.25). ‘Maysky’ had higher stress tolerance (–1.35), while the reference ‘Omsky golozerny 2’ showed increased homeostasis (0.118). Thus, ‘Omsky golozerny 4’ exceeded the previous two cultivars in adaptability and stability.
Bulgarian common bean (Phaseo/us vulgaris L.)
Background. The primary task of plant breeding is to develop and introduce into production two-row mid-season barley cultivars for feed and food purposes, capable of generating a high and high-quality grain yield. The purpose of the study is to characterize the new two-row fodder spring barley cultivar ‘Omsky 101’ (bred at Omsk Agrarian Scientific Center) according to its grain quality, yield and resistance to a set of diseases.Materials and methods. The experimental part of the work was carried out from 2013 through 2018 on the experimental fields of Omsk Agrarian Scientific Center, located in the southern forest-steppe and steppe zones. The area of the plot was 10 m2; there were 4 replications. The seeding rate was 4 million viable seeds per 1 ha. Agricultural practice in the experiment was conventional for the West Siberian region. Mathematical data processing complied with B. A. Dospekhov’s guidelines.Results. In terms of productivity, the new promising cv. ‘Omsky 101’ is a high-yielding variety; on average, over the period of research, its yield significantly exceeded the level of the reference cv. ‘Omsky 95’ both in the southern forest-steppe zone (+0.55 t/ha) and in the steppe zone (+0.38 t/ha). The increase over cv. ‘Omsky 100’ was 0.29 and 0.59 t/ha when sown over autumn plowing and fallow, respectively. When compared with the reference ‘Omsky 95’, ‘Omsky 101’ showed a gain in the weight of 1000 grains (+5.3 g), grain unit weight (+44.0 g/l), and grain uniformity (+12.4%). Also, when compared with both the reference and ‘Omsky 100’, there was an increased content of protein (+1.0 and +0.9%, respectively) and starch (+1.3 and +1.5%, respectively) in grain. During the period of study, according to the maximum damage scores with various smut species, ‘Omsky 101’ showed low rates of susceptibility to false loose smut (3.5% on average) and covered smut (5.0%), which is lower than the reference and level with cv. ‘Omsky 100’. Loose smut virulence rate was medium (23.1%), which is level with the reference but exceeds ‘Omsky 100’. Conclusion. The new promising cultivar ‘Omsky 101’ is high-yielding, of high quality, and resistant to smut species. The cultivar has been submitted to State Variety Trials in the Ural (9), West Siberian (10) and East Siberian (11) regions.
The authors see the creation of potentially high-yield varieties of barley adapted to the conditions of a particular region as a priority for selection. The study characterizes a new two-row variety of spring barley Omskiy 101 in terms of yield and adaptability for the conditions of the southern forest-steppe in Western Siberia. Comprehensive studies were carried out on the experimental fields of Omsk ANC premises from 2014 to 2018. The originator of spring barley Omskiy 101 was the Federal State Budget Scientific Institution Omsk ANC. A parental material was taken from the variety given by the Vavilov Federal Research Center Russian Institute of Plant and Genetic Resources. The variety Omskiy 101 belongs to the forest-steppe ecological group of varieties, drought tolerant, midseason, resistant to lodging. Distinctive features: average height; semi-straight, medium thickness and strenght stem, the color of the stem nodes brown; the average width of the leaf, the absence of pubescence on the vaginas of the lower leaves, the presence of a wax coating; two-row, membranous, spinous spike of cylindrical shape; the transition of flower scales to the spine is gradual, the nerve is poorly expressed; the spines are long, smooth, parallel to the spike, of medium roughness; possible anthocyanin coloration of tips and serration, hairy bristles; the grain is yellow, filmy, semi-elongated, large. The variety is highly harvested in Western Siberia (an increase of 0.55 t/ha to the standard in the Southern forest-steppe zone and 0.38 t/ha in the steppe on average for the period of research from 2014 to 2018). The variety is characterized by responsiveness to improved growing conditions as determined by S.A. Eberhart, W.A. Russell (bi = 1,1), and according to the methods proposed by A.A. Gryaznov (IEP = 1.05) and C. Wricke (Wi = 0.20). The studied variety was also characterized by increased stability (σ2d = 0.1 according to S.A. Eberhart and W.A. Russell) and adaptability (KA = 104.6% according to L.A. Zhivotkov). The variety was submitted for state variety testing in 2018 in the Ural (9), West Siberian (10) and East Siberian (11) regions.
Spring barley is a key grain-fodder and feed crop, which forms an increased yield (in comparison with other grain-fodder crops) due to early maturity and drought resistance. Many different methods for assessing environmental plasticity and stability have been developed, they are reliable and informative. The purpose of this study is a comparative characteristic of plasticity and stability parametres calculated with application of various methods on the example of barley varieties. The experimental part of the work was carried out in 2013-2017 on the experimental fields of the Omsk Omsk Agrarian Scientific Center (southern forest-steppe, Omsk). The parametres of ecological plasticity were calculated: Ymin-Ymax - resistance to stress, - compensatory ability (according to Rossielle, Hemblin); CV is the coefficient of variation (according to Dospekhov); K.A. - coefficient of adaptability (according to Zhivotkov’s meth- od); bi - coefficient of linear regression of productivity of varieties (according to Eberhart, Russell). Also, parametres of environmental stability are as follows: SI - stability index, Hom - homeostaticity (according to Khangildin); PVSL - parametre of variety stability level (according to Nettevich); σ2 d – regression coeffi- cient (according to Eberhart, Russell). The research results show that the parametres of plasticity and stability of varieties calculated by various methods differ significantly. Obviously, it is necessary to use a methodology that will bring all the scattered results to a single denominator. In this case, it is more convenient to use the principle of ranking varieties according to parameters and to evaluate them according to the sum of the ranks obtained by each variety. Thus, ac- cording to the rank assessment, the most stable and plastic are varieties that received this assessment according to most of the methods used in the research.
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