Adaptability of collection tobacco accessions in the central forest-steppe of Ukraine
DOI:
https://doi.org/10.30835/2413-7510.2020.206991Keywords:
tobacco, accession, regression coefficient (plasticity), stability variance, adaptability.Abstract
Purpose and objectives: to determine the parameters of environmental plasticity and stability of tobacco accessions for a set of features that affect the seed productivity in the soil-climatic conditions of the Central Forest-Steppe of Ukraine.
Material and methods. The study was conducted at the Experimental Station of Tobacco Cultivation of NSC “Institute of Agriculture of NAAS” in 2017–2019. Eleven Ukrainian tobacco accessions were taken as the test material.
The total area for growing tobacco accessions was 1,250 m2; the measurement area - 8.4 m2, with three replications. During the study period, the weather conditions were contrasting, which allowed us to evaluate the adaptability of the collection accessions and select the best of them. The technology for growing plants in the experimental plots was conventional for the Central Forest-Steppe of Ukraine.
Data were statistically processed, as B.A. Dospekhov described. The stability and plasticity parameters were determined by P.P. Litun’s method. Biometric data were processed in Microsoft Excel 2007.
Results and discussion. The article presents the results of analysis of the environmental plasticity and stability of 11 tobacco accessions of Ukrainian origin for the main morphological and valuable economic characteristics of plants, depending on changes in the environmental conditions. The tobacco varieties have been differentiated by levels of the environmental potential according to their response to various conditions of cultivation in the study site. Evaluating and ranking of the tobacco accessions by environmental plasticity and stability made it possible to identify environmentally adaptive genotypes in terms of plant height, number of capsules per inflorescence, seed weight per inflorescence, 1000-seed weight and seed yield.
Conclusions. Through assessment of the environmental plasticity and stability variance, the collection tobacco accessions’ responses to changes in the environmental conditions in the Central Forest-Steppe of Ukraine were determined. Highly plastic tobacco accessions with medium stability variances for the plant height were identified: Ternopolskiy 14, Berley 38, Berley 46, Berley 9, Spektr, Virginia 27, and Sobolchskyi 33; for the number of capsules per inflorescence: Ternopolskiy 14, Ternopolskiy Perspektivnyy, and Sobolchskyi 33; for seed weight per inflorescence: Ternopolskiy 14, Ternopolskiy Perspektivnyy, Berley 46, Berley 9, Virginia 27. and Trapezond; for 1000-seed weight: Ternopolskiy 7, Ternopolskiy 14, and Virginia 27; for seed yield: Ternopolskiy 14, Ternopolskiy Perspektivnyy, Berley 46, Burley 9, Virginia 27, and Trapezond.
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Copyright (c) 2020 K. P. Leonova, A. V. Morgun, V. I. Morgun, А. М. Kovalenko
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