Effect of the Hope FT-B1 Allele on wheat heading time and yield components
Precise regulation of flowering time is critical for plant reproductive success and, in cereals, to maximize grain yields. Seasonal cues including temperature and day length are integrated to regulate the timing of flowering. In temperate cereals, extended periods of cold (vernalization) release the...
| Autores principales: | , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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2017
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/1714 https://academic.oup.com/jhered/article-lookup/doi/10.1093/jhered/esu042 https://doi.org/10.1093/jhered/esu042 |
| _version_ | 1855034843136524288 |
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| author | Nitcher, Rebecca Pearce, Stephen Tranquilli, Gabriela Xiaoqin, Zhang Dubcovsky, Jorge |
| author_browse | Dubcovsky, Jorge Nitcher, Rebecca Pearce, Stephen Tranquilli, Gabriela Xiaoqin, Zhang |
| author_facet | Nitcher, Rebecca Pearce, Stephen Tranquilli, Gabriela Xiaoqin, Zhang Dubcovsky, Jorge |
| author_sort | Nitcher, Rebecca |
| collection | INTA Digital |
| description | Precise regulation of flowering time is critical for plant reproductive success and, in cereals, to maximize grain yields. Seasonal cues including temperature and day length are integrated to regulate the timing of flowering. In temperate cereals, extended periods of cold (vernalization) release the repression of FLOWERING LOCUS T1 (FT1), which is upregulated in the leaves in response to inductive long-day photoperiods. FT1 is a homolog of rice HD3a, which encodes a protein transported from leaves to the shoot apical meristem to induce flowering. A rare FT-B1 allele from the wheat variety “Hope” has been previously shown to be associated with an early flowering phenotype under long-day photoperiods. Here, we demonstrate that the Hope FT-B1 allele accelerates flowering even under short days, and that it is epistatic to the VERNALIZATION 1 (VRN1) gene. On average, the introgression of Hope FT-B1 into 6 genetic backgrounds resulted in 2.6 days acceleration of flowering (P < 0.0001) and 4.1% increase in spike weight (P = 0.0093), although in one variety, it was associated with a decrease in spike weight. These results suggest that the Hope FT-B1 allele could be useful in wheat breeding programs to subtly accelerate floral development and increase adaptation to changing environments. |
| format | info:ar-repo/semantics/artículo |
| id | INTA1714 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA17142017-11-14T17:51:28Z Effect of the Hope FT-B1 Allele on wheat heading time and yield components Nitcher, Rebecca Pearce, Stephen Tranquilli, Gabriela Xiaoqin, Zhang Dubcovsky, Jorge Alelos Trigo Caracteres de Rendimiento Espigueo Alleles Wheat Yield Components Heading Precise regulation of flowering time is critical for plant reproductive success and, in cereals, to maximize grain yields. Seasonal cues including temperature and day length are integrated to regulate the timing of flowering. In temperate cereals, extended periods of cold (vernalization) release the repression of FLOWERING LOCUS T1 (FT1), which is upregulated in the leaves in response to inductive long-day photoperiods. FT1 is a homolog of rice HD3a, which encodes a protein transported from leaves to the shoot apical meristem to induce flowering. A rare FT-B1 allele from the wheat variety “Hope” has been previously shown to be associated with an early flowering phenotype under long-day photoperiods. Here, we demonstrate that the Hope FT-B1 allele accelerates flowering even under short days, and that it is epistatic to the VERNALIZATION 1 (VRN1) gene. On average, the introgression of Hope FT-B1 into 6 genetic backgrounds resulted in 2.6 days acceleration of flowering (P < 0.0001) and 4.1% increase in spike weight (P = 0.0093), although in one variety, it was associated with a decrease in spike weight. These results suggest that the Hope FT-B1 allele could be useful in wheat breeding programs to subtly accelerate floral development and increase adaptation to changing environments. Fil: Nitcher, Rebecca. University of California. Department of Plant Sciences; Estados Unidos Fil: Pearce, Stephen. University of California. Department of Plant Sciences; Estados Unidos Fil: Tranquilli, Gabriela. University of California. Department of Plant Sciences; Estados Unidos. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina Fil: Xiaoqin, Zhang. University of California. Department of Plant Sciences; Estados Unidos Fil: Dubcovsky, Jorge. University of California. Department of Plant Sciences; Estados Unidos. Howard Hughes Medical Institute; Estados Unidos 2017-11-08T15:13:21Z 2017-11-08T15:13:21Z 2014-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/1714 https://academic.oup.com/jhered/article-lookup/doi/10.1093/jhered/esu042 0022-1503 (Print) 1465-7333 (Online) https://doi.org/10.1093/jhered/esu042 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Journal of Heredity 105 (5) : 666–675 (September 2014) |
| spellingShingle | Alelos Trigo Caracteres de Rendimiento Espigueo Alleles Wheat Yield Components Heading Nitcher, Rebecca Pearce, Stephen Tranquilli, Gabriela Xiaoqin, Zhang Dubcovsky, Jorge Effect of the Hope FT-B1 Allele on wheat heading time and yield components |
| title | Effect of the Hope FT-B1 Allele on wheat heading time and yield components |
| title_full | Effect of the Hope FT-B1 Allele on wheat heading time and yield components |
| title_fullStr | Effect of the Hope FT-B1 Allele on wheat heading time and yield components |
| title_full_unstemmed | Effect of the Hope FT-B1 Allele on wheat heading time and yield components |
| title_short | Effect of the Hope FT-B1 Allele on wheat heading time and yield components |
| title_sort | effect of the hope ft b1 allele on wheat heading time and yield components |
| topic | Alelos Trigo Caracteres de Rendimiento Espigueo Alleles Wheat Yield Components Heading |
| url | http://hdl.handle.net/20.500.12123/1714 https://academic.oup.com/jhered/article-lookup/doi/10.1093/jhered/esu042 https://doi.org/10.1093/jhered/esu042 |
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