Identification of drought tolerant rice (Oryza Sativa L.) genotypes with Asian and African Backgrounds

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dc.creatorNdikuryayo, Cyprien
dc.creatorNdayiragije, Alexis
dc.creatorKilasi, Newton Lwiyiso
dc.creatorKusolwa, Paul
dc.date.accessioned2023-07-24T07:21:24Z
dc.date.accessioned2025-08-05T07:41:30Z
dc.date.available2023-07-24T07:21:24Z
dc.date.created2023-07-24T07:21:24Z
dc.date.issued2023
dc.description.abstractDrought 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.
dc.identifier: Ndikuryayo, C.; Ndayiragije, A.; Kilasi, N.L.; Kusolwa, P. Identification of Drought Tolerant Rice (Oryza Sativa L.) Genotypes with Asian and African Backgrounds
dc.identifierhttp://www.suaire.sua.ac.tz/handle/123456789/5447
dc.identifier.urihttp://repository.costech.or.tz/handle/20.500.14732/99527
dc.languageen
dc.publisherMDPI
dc.subjectSoil moisture content
dc.subjectQuantitative trait loci
dc.subjectIrrigated; yield
dc.subjectImprovement
dc.subjectBurundi
dc.titleIdentification of drought tolerant rice (Oryza Sativa L.) genotypes with Asian and African Backgrounds
dc.typeArticle

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