Potential traits for aiding selection for high grain yield based on trait association and path analysis in sorghum
Journal of Underutilised Crops Research
| Field | Value | |
| Title | Potential traits for aiding selection for high grain yield based on trait association and path analysis in sorghum | |
| Creator | Chibvongodze, Miriam K. Gasura, Edmore Kamutando, Casper N. Mabasa, Stanford Makovere, Brighton Nyakudya, Elijah Nhamo, Ancilia Mtambanengwe, Florence Mapfumo, Paul | |
| Description | Background: Simultaneous breeding of grain yield and desirable agronomic traits are effective when the traits are positively correlated and heritability is high. Knowledge of the magnitude of trait contribution is essential in hastening crop breeding progress.Aim: This study aimed to investigate the correlations and path analysis of yield traits in grain sorghum.Setting: The experiment was conducted in three different agro-ecological regions in Zimbabwe.Methods: A total of 20 experimental sorghum genotypes were evaluated during the 2021–2022 and 2022–2023 cropping seasons across five sites representing primary sorghum production areas in Zimbabwe. A randomised complete block design replicated thrice was used. Correlation and path analysis were performed.Results: Correlation analysis showed significant (p ≤ 0.05) and positive correlation between grain yield and days to 50% flowering (phenotypic correlation [rp] = 0.48; genotypic correlation [rg] = 0.53), days to 95% physiological maturity (rp = 0.59; rg = 0.31) and panicle length (rp = 0.61; rg = 0.57) over the two seasons at both phenotypic and genotypic level. The path analysis revealed that days to 50% flowering (Pp = 0.185; Pg = 0.280), days to 95% physiological maturity (phenotypic path coefficient [Pp] = 0.169; genotypic path coefficient [Pg] = 0.201) and panicle length (Pp = 0.354; Pg = 0.194), had significant (p ≤ 0.05) positive direct effects on sorghum grain yield at both phenotypic and genotypic level. Days to 50% flowering and panicle length had high heritability of 0.72 and 0.86, respectively.Conclusion: Breeders are recommended to select high sorghum grain yielding genotypes through days to 50% flowering and panicle length making effective indirect selection for sorghum grain improvement.Contribution: Identification and use of correlated traits for grain yield saves resources and increases breeding efficiency. | |
| Publisher | AOSIS | |
| Date | 2025-06-13 | |
| Identifier | 10.4102/jucr.v4i1.23 | |
| Source | Journal of Underutilised Crops Research; Vol 4, No 1 (2025); 10 pages 2958-0994 3105-4277 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://underutilisedcrops.org/index.php/jucr/article/view/23/74
https://underutilisedcrops.org/index.php/jucr/article/view/23/75
https://underutilisedcrops.org/index.php/jucr/article/view/23/76
https://underutilisedcrops.org/index.php/jucr/article/view/23/77
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