Evaluation of genetic parameters of winter barley varieties under water deficit conditions
The aim of the present study was to use REML/BLUP-based procedures in order to estimate variance components and genetic parameters and to determine correlations between grain yield and yield-related traits of winter barley varieties. Studied genotypes were grown in two seasons characterized by dif...
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| Format: | Article |
| Language: | Bulgarian |
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University of Zagreb, Faculty of Agriculture
2023-12-01
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| Series: | Journal of Central European Agriculture |
| Subjects: | |
| Online Access: | https://jcea.agr.hr/articles/771923_Evaluation_of_genetic_parameters_of_winter_barley_varieties_under_water_deficit_conditions_en.pdf |
| _version_ | 1797386230152822784 |
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| author | Boryana DYULGEROVA Nikolay DYULGEROV |
| author_facet | Boryana DYULGEROVA Nikolay DYULGEROV |
| author_sort | Boryana DYULGEROVA |
| collection | DOAJ |
| description | The aim of the present study was to use REML/BLUP-based procedures in order to estimate variance components and genetic parameters and to determine correlations between grain yield and yield-related traits of winter barley varieties. Studied genotypes were grown in two seasons characterized by different levels of water deficit (precipitation sum was less by 15% in the first growing year and 36% in the second growing year than the long-term precipitation sum). A reduction was observed in all studied yield-related traits, with grain yield in the second year being more than 70% lower than that measured in the first growing year. Lower values of broad-sense heritability in the second growing year for the traits number of spikelets and grains per spike, grain weight per spike, and grain yield were found suggesting that the direct selection of these traits under drought stress conditions will be less effective. Varieties ranking based on the FAI-BLUP index strongly varied across growing seasons, but in both years variety Bojin was selected as a high-performing variety for multiple traits. Considerable differences were observed in the magnitude and directions of
correlations between grain yield and yield-related traits between two growing seasons. These findings, in the context of the increasing frequency and duration of drought stress in the region, suggest a longer period of multi-year testing and
complicate the process of selection in breeding programs of winter barley. |
| first_indexed | 2024-03-08T22:06:02Z |
| format | Article |
| id | doaj.art-3670bd67a4e34ac09b39ec466d29f64c |
| institution | Directory Open Access Journal |
| issn | 1332-9049 |
| language | Bulgarian |
| last_indexed | 2024-03-08T22:06:02Z |
| publishDate | 2023-12-01 |
| publisher | University of Zagreb, Faculty of Agriculture |
| record_format | Article |
| series | Journal of Central European Agriculture |
| spelling | doaj.art-3670bd67a4e34ac09b39ec466d29f64c2023-12-19T09:06:04ZbulUniversity of Zagreb, Faculty of AgricultureJournal of Central European Agriculture1332-90492023-12-0124486287210.5513/JCEA01/24.4.3884Evaluation of genetic parameters of winter barley varieties under water deficit conditionsBoryana DYULGEROVANikolay DYULGEROVThe aim of the present study was to use REML/BLUP-based procedures in order to estimate variance components and genetic parameters and to determine correlations between grain yield and yield-related traits of winter barley varieties. Studied genotypes were grown in two seasons characterized by different levels of water deficit (precipitation sum was less by 15% in the first growing year and 36% in the second growing year than the long-term precipitation sum). A reduction was observed in all studied yield-related traits, with grain yield in the second year being more than 70% lower than that measured in the first growing year. Lower values of broad-sense heritability in the second growing year for the traits number of spikelets and grains per spike, grain weight per spike, and grain yield were found suggesting that the direct selection of these traits under drought stress conditions will be less effective. Varieties ranking based on the FAI-BLUP index strongly varied across growing seasons, but in both years variety Bojin was selected as a high-performing variety for multiple traits. Considerable differences were observed in the magnitude and directions of correlations between grain yield and yield-related traits between two growing seasons. These findings, in the context of the increasing frequency and duration of drought stress in the region, suggest a longer period of multi-year testing and complicate the process of selection in breeding programs of winter barley.https://jcea.agr.hr/articles/771923_Evaluation_of_genetic_parameters_of_winter_barley_varieties_under_water_deficit_conditions_en.pdfbarleyreml/blup methodologyfai-blup indexcorrelation analysisdrought stress |
| spellingShingle | Boryana DYULGEROVA Nikolay DYULGEROV Evaluation of genetic parameters of winter barley varieties under water deficit conditions Journal of Central European Agriculture barley reml/blup methodology fai-blup index correlation analysis drought stress |
| title | Evaluation of genetic parameters of winter barley varieties under water deficit conditions |
| title_full | Evaluation of genetic parameters of winter barley varieties under water deficit conditions |
| title_fullStr | Evaluation of genetic parameters of winter barley varieties under water deficit conditions |
| title_full_unstemmed | Evaluation of genetic parameters of winter barley varieties under water deficit conditions |
| title_short | Evaluation of genetic parameters of winter barley varieties under water deficit conditions |
| title_sort | evaluation of genetic parameters of winter barley varieties under water deficit conditions |
| topic | barley reml/blup methodology fai-blup index correlation analysis drought stress |
| url | https://jcea.agr.hr/articles/771923_Evaluation_of_genetic_parameters_of_winter_barley_varieties_under_water_deficit_conditions_en.pdf |
| work_keys_str_mv | AT boryanadyulgerova evaluationofgeneticparametersofwinterbarleyvarietiesunderwaterdeficitconditions AT nikolaydyulgerov evaluationofgeneticparametersofwinterbarleyvarietiesunderwaterdeficitconditions |