Genetic diversity analysis of East African sorghum (Sorghum bicolor [L.] Moench) germplasm collections for agronomic and nutritional quality traits

Evaluation of genetic variability for major agro-morphological and stalk sugar traits in African sorghum genotypes

“…The magnitude of variability measured by GCV and PCV provides information about the relative amount of variation in the different traits [ 25 ]. Both PCV and GCV had high values for most of the traits, which are similar to the observations of Mengistu et al [ 26 ]; Andiku et al [ 27 ]. However, PCV was generally higher than GCV in this study.…”

“…The first two PCs PC1 (38.01%) and PC2 (11.47%) accounted for a total of 49.47% of the total variation. This is similar to the work of Mumtaz et al [ 42 ], who reported the first two PCs of 47.88%, furthermore, Hamidou et al [ 43 ]; Andiku et al [ 27 ] reported a slightly lower value for the first two PCs of 40.72%, and 42%, respectively. The number of leaves, number of nodes, plant height, stem width, length of leaves, number of days to flowering, and length of the inflorescence are the major contributors to the variation explained by the first principal component.…”

Genetic Diversity, Correlation and Genotype by Yield by Trait (GYT) Analysis of Grain Yield and Nutritional Quality Traits in Sorghum (Sorghum bicolor [L.] Moench) Genotypes in Tigray, northern Ethiopia

“…The high broad sense heritability recorded in the present study also indicates these traits are controlled by the additive gene action, which could be improved through selection. As in this study, high to medium heritability in sorghum germplasm has been also reported for various agronomic and nutritional traits of sorghum by [4,31]. As compared to the individual environment, the heritability of the pooled over analysis was reduced to the range from 0.4 (protein content) to 0.82 (grain yield).…”

“…Genotypes that contain iron and zinc better than the acceptable level, which is > 60 ppm for iron and > 32 ppm for zinc [46] can be used for bio-fortification programs [31] to alleviate acute malnutrition deeply rooted in underdeveloped countries such as Ethiopia. From the present study, LR106, LR102, LR25 and LR16 can be selected for higher grain yield and starch zinc and calcium, LR23, LR45, LR38 and LR12 can be selected for higher zinc and iron content, and LR14, LR27, LR65 and LR57 can be selected for higher protein and starch contents.…”

“…Selecting genotypes landraces with improved yield and nutritional quality, especially with respect to mineral content would have a significant contribution to intervening the high prevalence of food shortage and malnutrition, especially in arid and semi-arid areas where sorghum is the stable food [30][31]. Nonetheless, selecting in one trait may result in the reduced level of the other one or more target traits [32], which hinders the progress of crop improvement.…”