Physiological and Agronomic Performance Evaluation of Stay Green (SG) Sorghum (Sorghum bicolor (L.) Moench) Varieties at Shewa Robit, Amhara Regional State, Ethiopia
| dc.contributor.advisor | Fetene, Masresha(Professor) | |
| dc.contributor.author | Getnet, Zelalem | |
| dc.date.accessioned | 2018-07-18T06:05:22Z | |
| dc.date.accessioned | 2023-11-09T04:21:16Z | |
| dc.date.available | 2018-07-18T06:05:22Z | |
| dc.date.available | 2023-11-09T04:21:16Z | |
| dc.date.issued | 2014-07 | |
| dc.description.abstract | Drought is one of the major constraints limiting crop production worldwide. Crop growth models predict that this issue will be more severe in the future. Drought impairs normal growth, disturbs water relations, reduces water use efficiency and affects yield. Plants, however, have a variety of morphological, physiological and biochemical responses at cellular and whole organism level, making it a more complex phenomenon. A field experiment was conducted at Shewa robit to evaluate the physiological and agronomic performance of different SG sorghum accessions. To achieve this, three sorghum genotypes (Sorcoll 141/07, Sorcoll 146/07 and, Sorcoll 163/07) and a check (Afeso) accessions were used in the experiment. The experiment was laid down in a randomized complete block design (RCBD). The data on morphological, physiological and biochemical traits such as girth diameter, number of tillers, total green leaf area, chlorophyll content, rate of leaf senescence, relative water content, assimilation rate, WUE, SDW, RDW, RSR, leaf proline, nitrogen, protein, soluble sugar contents, and yield revealed significant difference among accessions at P < 0.05. Afeso and Sorcoll 163/07 showed better stress tolerance and SG property. These accessions were also selected for their maximum grain yield per hectare, while accession Sorcoll 146/07 was selected for its early maturity. Correlation analysis revealed that GD, number of tillers, chlorophyll content, GLA, RWC, WUE, lower rate of leaf senescence, SDW, RDW and RSR had significantly positive relation with grain yield per hectare and have been found to be effective screening tools for stress tolerance and SG property. So, they can be used in sorghum breeding program. Key words/ phrases: Agronomic performance; Biochemical traits; Sorghum accessions; Stay-green; Stress tolerance. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/9091 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Agronomic performance | en_US |
| dc.subject | Biochemical traits | en_US |
| dc.subject | Sorghum accessions | en_US |
| dc.subject | Stay-green | en_US |
| dc.subject | Stress tolerance | en_US |
| dc.title | Physiological and Agronomic Performance Evaluation of Stay Green (SG) Sorghum (Sorghum bicolor (L.) Moench) Varieties at Shewa Robit, Amhara Regional State, Ethiopia | en_US |
| dc.type | Thesis | en_US |