id: 33672
Title: Assessment of the relation between the adaptive potential of oilseed radish varieties (Raphanus sativus l. var. oleiformis Pers.) and chlorophyll fluorescence induction parameters
Authors: Tsytsiura Y.
Keywords: adaptability, chlorophyll fluorescence, oilseed radish, plasticity, varieties
Date of publication: 2023-08-02 11:21:02
Last changes: 2023-08-02 11:21:02
Year of publication: 2023
Summary: The possibility of optimization of the system of varietal identification, particularly of cruciferous crops in the breeding programs an urgent task that needs a scientific solution. A system comparison of a complex model for assessing genotypes for plasticity and stability with indicative basic and derivative indicators of the chlorophyll fluorescence induction curve (CFI) is proposed as a possible solution to this problem. 14 varieties of oilseed radish of different ecological and geographical origin were chosen as the object of research. Widely tested indicators of both methodological approaches were applied, taking into account the agrotechnological aspects of the analysis of oilseed radish plants for uniformity and stability. The varietal specificity of the basic indicators of the induction of chlorophyll fluorescence of oilseed radish in response to changes in the stress level of the years of the research period was established. The determined interval of correlation-regression dependencies at the level of -0.382–(-0.658) (p < 0.05–0.01) between the indicators of genotypic stability (Gp), adaptability (bi), and selection value (Sv) and the basic indicators of the CFI curve such as minimal fluorescence (F0), fluorescence of the `plateau` zone (Fрl), maximal fluorescence (Fm) and fluorescence stationary level (Fst). Direct correlations were determined at the level of 0.652–0.745 (p < 0.01–0.001) in the same comparison system for maximal fluorescence (Fm), fluorescence rise (dFpl), maximum variable fluorescence (Fv), photochemical efficiency (EP), leaf water potential (Lwp), plant viability index (RFd), efficiency of the initial reactions of photosynthesis (Kprp), coefficient of decline of the fluorescence (Kfd). The indicated pair correlation dependences were confirmed by the results of multiple regression analysis for the value of multiple regression coefficients (R) in the interval of 0.793–0.833 (p < 0.05–0.01). On the basis of the obtained data, an integrated version of the assessment of varieties of cruciferous crops is proposed, which allows optimization of the system of varietal identification, particularly of cruciferous crops, in the breeding programs of their pre- and post-registration study, as well as the system of searching for donors and sources of relevant traits in the breeding hybridization programs at various levels. In terms of further research, it will be promising to apply this variant of the analysis to wild species of cruciferous crops in a single complex with their cultural forms to assess the regularities of the formation of adaptations under the directed trait selection process.
URI: http://socrates.vsau.org/repository/getfile.php/33672.pdf
Publication type: Статті Scopus
Publication: Agronomy Research. 2023. Vol. 21 (1). P. 193-221. DOI: https://doi.org/10.15159/AR.23.001
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