Assessment of the relation between the adaptive potential of oilseed radish varieties (Raphanus sativus l. var. oleiformis Pers.) and chlorophyll fluorescence induction parameters
Laen...
Kuupäev
2023
Kättesaadav alates
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
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.
Kirjeldus
Received: October 11th, 2022 ; Accepted: December 16th, 2022 ; Published: January 5th, 2023 ; Correspondence: yaroslavtsytsyura@ukr.net, yaroslav301974@gmail.com
Märksõnad
adaptability, chlorophyll fluorescence, oilseed radish, plasticity, varieties, articles