Mwamahonje, A and Eleblu, J S Y and Ofori, K and Feyissa, T and Deshpande, S P and Tongoona, P (2021) Evaluation of Traits’ Performance Contributing to Drought Tolerance in Sorghum. Agronomy (TSI), 11 (9). pp. 1-17. ISSN 2073-4395
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Abstract
Sorghum (Sorghum bicolor [L.] Moench) is an important food crop for people in semi-arid Africa. The crop is affected by post-flowering drought; therefore, the study was conducted to screen traits contributing to drought tolerance using BC2F4 sorghum genotypes in stressed and unstressed water conditions in a split-plot design. Water stress (0 mm/day) was applied at post-flowering to plant maturity in water-stressed treatment. The genotype SE438 produced the highest grain yield (2.65 ton ha−1) in water-stressed environment and NA316C yielded highest (3.42 ton ha−1) under well-watered (7 mm/day) environment. There were significant differences of most traits evaluated at p < 0.01 across environments. The mean squares of traits for genotypes by environments revealed interactions at p < 0.05 and p < 0.01. The indices geometric mean productivity (GMP) and mean productivity (MP) were highly correlated with yield under well-watered (YP) and water-stressed condition (YS) and each other. The first principal axis (PC1) explained 59.1% of the total variation. It is the best indicator of yield potential and drought tolerance of sorghum genotypes in this study. Therefore, further improvement is needed to strengthen drought tolerance and yield in sorghum.
| Item Type: | Article |
|---|---|
| Divisions: | RP-Dryland Cereals |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | genotypes by environments, leaf rolling, panicle weight, recurrent parents, root biomass, stay green, stress intensity |
| Subjects: | Others > Drought Tolerance Mandate crops > Sorghum |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 05 Mar 2025 03:45 |
| Last Modified: | 05 Mar 2025 03:45 |
| URI: | http://oar.icrisat.org/id/eprint/12988 |
| Official URL: | https://www.mdpi.com/2073-4395/11/9/1698 |
| Projects: | UNSPECIFIED |
| Funders: | The German Academic Exchange Service (DAAD) |
| Acknowledgement: | WACCI and TARI Makutupora Centre are acknowledged for providing technical support when conducting research. |
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