Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines
Plant height is an important agronomic trait related to plant architecture and grain yield in wheat. We investigated the effects of the gibberellic acid (GA)-insensitive Rht-B1b and Rht-D1b semi-dwarfing alleles in a set of 599 F4:5 spring wheat breeding lines grown in rainfed and supplemental irrig...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Serbian Genetics Society
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/137930 |
| _version_ | 1855526894221393920 |
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| author | Zine El Abidine Fellahi Abderrahmane Hannachi Dreisigacker, Susanne Sehgal, Deepmala Yahyaoui, Amor H. Bouzerzour, Hamenna |
| author_browse | Abderrahmane Hannachi Bouzerzour, Hamenna Dreisigacker, Susanne Sehgal, Deepmala Yahyaoui, Amor H. Zine El Abidine Fellahi |
| author_facet | Zine El Abidine Fellahi Abderrahmane Hannachi Dreisigacker, Susanne Sehgal, Deepmala Yahyaoui, Amor H. Bouzerzour, Hamenna |
| author_sort | Zine El Abidine Fellahi |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Plant height is an important agronomic trait related to plant architecture and grain yield in wheat. We investigated the effects of the gibberellic acid (GA)-insensitive Rht-B1b and Rht-D1b semi-dwarfing alleles in a set of 599 F4:5 spring wheat breeding lines grown in rainfed and supplemental irrigation conditions at Setif semi-arid high plateaus region (Algeria). Genotyping of diagnostic markers was performed using Kompetitive Allele Specific PCR assays. The Rht-B1b mutant allele was present in 66% of the evaluated lines, while the Rht-D1b allele was found only in 8% of the lines. Relative to wild-type, Rht-B1b or Rht-D1b alone reduced plant height by 16.0 and 16.3% in rainfed, and by 20.7 and 21.8% in irrigated environments, respectively. The two dwarfing alleles when combined decreased height by 39.3 and 56.6% in rainfed and irrigated conditions, respectively. The semi-dwarf breeding lines generally outperformed the tall genotypes for yield and yield components including the number of grains per spike and harvest index irrespective of environment. Variation in heading date under the influence of dwarfing alleles has not been found. In addition, above-ground biomass was reduced in most of the short statured lines, compared to their tall counter parts across environments. We also demonstrate clear yield and yield components penalty for Rht-B1b + Rht-D1b double dwarf backgrounds. |
| format | Journal Article |
| id | CGSpace137930 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Serbian Genetics Society |
| publisherStr | Serbian Genetics Society |
| record_format | dspace |
| spelling | CGSpace1379302024-11-07T09:26:03Z Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines Genetički efekti Rht-B1b i Rht-D1b patuljastih alela na visinu biljke i agronomska svojstva oplemenjivačkih linija hlebne pšenice (Triticum aestivum L.) Zine El Abidine Fellahi Abderrahmane Hannachi Dreisigacker, Susanne Sehgal, Deepmala Yahyaoui, Amor H. Bouzerzour, Hamenna plant height triticum aestivum yield components alleles breeding lines Plant height is an important agronomic trait related to plant architecture and grain yield in wheat. We investigated the effects of the gibberellic acid (GA)-insensitive Rht-B1b and Rht-D1b semi-dwarfing alleles in a set of 599 F4:5 spring wheat breeding lines grown in rainfed and supplemental irrigation conditions at Setif semi-arid high plateaus region (Algeria). Genotyping of diagnostic markers was performed using Kompetitive Allele Specific PCR assays. The Rht-B1b mutant allele was present in 66% of the evaluated lines, while the Rht-D1b allele was found only in 8% of the lines. Relative to wild-type, Rht-B1b or Rht-D1b alone reduced plant height by 16.0 and 16.3% in rainfed, and by 20.7 and 21.8% in irrigated environments, respectively. The two dwarfing alleles when combined decreased height by 39.3 and 56.6% in rainfed and irrigated conditions, respectively. The semi-dwarf breeding lines generally outperformed the tall genotypes for yield and yield components including the number of grains per spike and harvest index irrespective of environment. Variation in heading date under the influence of dwarfing alleles has not been found. In addition, above-ground biomass was reduced in most of the short statured lines, compared to their tall counter parts across environments. We also demonstrate clear yield and yield components penalty for Rht-B1b + Rht-D1b double dwarf backgrounds. 2023 2024-01-17T22:26:00Z 2024-01-17T22:26:00Z Journal Article https://hdl.handle.net/10568/137930 en Open Access application/pdf Serbian Genetics Society Fellahi, Z. E. A., Hannachi, A., Dreisigacker, S., Sehgal, D., Yahyaoui, A., & Bouzerzour, H. (2023). Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines. ABI Genetika, 55(2), 565–581. https://doi.org/10.2298/gensr2302565f |
| spellingShingle | plant height triticum aestivum yield components alleles breeding lines Zine El Abidine Fellahi Abderrahmane Hannachi Dreisigacker, Susanne Sehgal, Deepmala Yahyaoui, Amor H. Bouzerzour, Hamenna Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines |
| title | Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines |
| title_full | Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines |
| title_fullStr | Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines |
| title_full_unstemmed | Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines |
| title_short | Genetic effects of Rht-B1b and Rht-D1b dwarfing alleles on plant height and agronomic traits of bread wheat (Triticum aestivum L.) breeding lines |
| title_sort | genetic effects of rht b1b and rht d1b dwarfing alleles on plant height and agronomic traits of bread wheat triticum aestivum l breeding lines |
| topic | plant height triticum aestivum yield components alleles breeding lines |
| url | https://hdl.handle.net/10568/137930 |
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