Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds
Drought is among the major abiotic stresses on rice production that can cause yield losses of up to 100% under severe drought conditions. Neither of the rice varieties currently grown in Burundi can withstand very low and irregular precipitation. This study identified genotypes that have putative qu...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2023
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/132720 |
| _version_ | 1855541338994376704 |
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| author | Ndikuryayo, Cyprien Ndayiragije, Alexis Kilasi, Newton Paul Kusolwa |
| author_browse | Kilasi, Newton Ndayiragije, Alexis Ndikuryayo, Cyprien Paul Kusolwa |
| author_facet | Ndikuryayo, Cyprien Ndayiragije, Alexis Kilasi, Newton Paul Kusolwa |
| author_sort | Ndikuryayo, Cyprien |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Drought is among the major abiotic stresses on rice production that can cause yield losses of up to 100% under severe drought conditions. Neither of the rice varieties currently grown in Burundi can withstand very low and irregular precipitation. This study identified genotypes that have putative quantitative trait loci (QTLs) associated with drought tolerance and determined their performance in the field. Two hundred and fifteen genotypes were grown in the field under both drought and irrigated conditions. Genomic deoxyribonucleic acid (DNA) was extracted from rice leaves for further genotypic screening. The results revealed the presence of the QTLs qDTY12.1, qDTY3.1, qDTY2-2_1, and qDTY1.1 in 90%, 85%, 53%, and 22% of the evaluated genotypes, respectively. The results of the phenotypic evaluation showed a significant yield reduction due to drought stress. Yield components and other agronomic traits were also negatively affected by drought. Genotypes having high yield best linear unbiased predictions (BLUPs) with two or more major QTLs for drought tolerance, including IR 108044-B-B-B-3-B-B, IR 92522-45-3-1-4, and BRRI DHAN 55 are of great interest for breeding programs to improve the drought tolerance of lines or varieties with other preferred traits. |
| format | Journal Article |
| id | CGSpace132720 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1327202025-12-08T10:29:22Z Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds Ndikuryayo, Cyprien Ndayiragije, Alexis Kilasi, Newton Paul Kusolwa soil moisture quantitative trait loci irrigated rice yields improvement burundi Drought is among the major abiotic stresses on rice production that can cause yield losses of up to 100% under severe drought conditions. Neither of the rice varieties currently grown in Burundi can withstand very low and irregular precipitation. This study identified genotypes that have putative quantitative trait loci (QTLs) associated with drought tolerance and determined their performance in the field. Two hundred and fifteen genotypes were grown in the field under both drought and irrigated conditions. Genomic deoxyribonucleic acid (DNA) was extracted from rice leaves for further genotypic screening. The results revealed the presence of the QTLs qDTY12.1, qDTY3.1, qDTY2-2_1, and qDTY1.1 in 90%, 85%, 53%, and 22% of the evaluated genotypes, respectively. The results of the phenotypic evaluation showed a significant yield reduction due to drought stress. Yield components and other agronomic traits were also negatively affected by drought. Genotypes having high yield best linear unbiased predictions (BLUPs) with two or more major QTLs for drought tolerance, including IR 108044-B-B-B-3-B-B, IR 92522-45-3-1-4, and BRRI DHAN 55 are of great interest for breeding programs to improve the drought tolerance of lines or varieties with other preferred traits. 2023-02-17 2023-11-04T04:22:44Z 2023-11-04T04:22:44Z Journal Article https://hdl.handle.net/10568/132720 en Open Access application/pdf MDPI Ndikuryayo, C.; Ndayiragije, A.; Kilasi, N.L.; Kusolwa, P. Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds. Plants 2023, 12, 922. https://doi.org/10.3390/plants12040922 |
| spellingShingle | soil moisture quantitative trait loci irrigated rice yields improvement burundi Ndikuryayo, Cyprien Ndayiragije, Alexis Kilasi, Newton Paul Kusolwa Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds |
| title | Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds |
| title_full | Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds |
| title_fullStr | Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds |
| title_full_unstemmed | Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds |
| title_short | Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds |
| title_sort | identification of drought tolerant rice oryza sativa l genotypes with asian and african backgrounds |
| topic | soil moisture quantitative trait loci irrigated rice yields improvement burundi |
| url | https://hdl.handle.net/10568/132720 |
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