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

Adedugba, Adeyemi Adewumi; Adeyemo, Oyenike; Adetumbi, J. A.; Amusa, Oluwafemi Daniel; Ogunkanmi, Lasisi Adebayo

doi:10.1016/j.heliyon.2023.e14622

Cited by 8 publications

(2 citation statements)

References 50 publications

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“…The significant correlations between PH and grain yield and TKW were reported in sorghum by Kante [ 50 ], which showed yield superiority of the tall hybrids over the well-adapted local varieties of West and Central Africa. Accordingly, our result is consistent with that of Kante and Adedugba [ 50 , 51 ].…”

Section: Genetic Diversity and Population Structuresupporting

confidence: 93%

Genetic variation for grain nutritional profile and yield potential in sorghum and the possibility of selection for drought tolerance under irrigated conditions

Kamal,

Gorafi,

Tomemori

et al. 2023

BMC Genomics

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Background Increasing grain nutritional value in sorghum (Sorghum bicolor) is a paramount breeding objective, as is increasing drought resistance (DR), because sorghum is grown mainly in drought-prone areas. The genetic basis of grain nutritional traits remains largely unknown. Marker-assisted selection using significant loci identified through genome-wide association study (GWAS) shows potential for selecting desirable traits in crops. This study assessed natural variation available in sorghum accessions from around the globe to identify novel genes or genomic regions with potential for improving grain nutritional value, and to study associations between DR traits and grain weight and nutritional composition. Results We dissected the genetic architecture of grain nutritional composition, protein content, thousand-kernel weight (TKW), and plant height (PH) in sorghum through GWAS of 163 unique African and Asian accessions under irrigated and post-flowering drought conditions. Several QTLs were detected. Some were significantly associated with DR, TKW, PH, protein, and Zn, Mn, and Ca contents. Genomic regions on chromosomes 1, 2, 4, 8, 9, and 10 were associated with TKW, nutritional, and DR traits; colocalization patterns of these markers indicate potential for simultaneous improvement of these traits. In African accessions, markers associated with TKW were mapped to six regions also associated with protein, Zn, Ca, Mn, Na, and DR, suggesting the potential for simultaneous selection for higher grain nutrition and TKW. Our results indicate that it may be possible to select for increased DR on the basis of grain nutrition and weight potential. Conclusions This study provides a valuable resource for selecting landraces for use in plant breeding programs and for identifying loci that may contribute to grain nutrition and weight with the hope of producing cultivars that combine improved yield traits, nutrition, and DR.

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Section: Genetic Diversity and Population Structuresupporting

confidence: 93%

Genetic variation for grain nutritional profile and yield potential in sorghum and the possibility of selection for drought tolerance under irrigated conditions

Kamal,

Gorafi,

Tomemori

et al. 2023

BMC Genomics

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“…In the current investigation, distinct levels of PCV, GCV, H and MAG were assessed within the evaluated genotypes. For this investigation, higher values of PCV were recorded in comparison to GCV [56,57]. High PCV and GCV values indicate an extensive gene pool that adjusts positively to a favorable environment [58,59].…”

Section: Discussionmentioning

confidence: 62%

Characterization and Trait Association Analysis of 27 Pearl Millet Landraces in Southern Tunisia

et al. 2023

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Pearl millet (Pennisetum glaucum (L.) R. Br., 2n = 2x = 14, Poaceae), is a cross-pollinated, warm-season crop grown worldwide. To select genotypes for breeding pearl millet cultivars that adapt to drought condition in southern Tunisia, we evaluated the grain yield (GY) and yield-related traits using a set of 27 landraces at two locations in southern Tunisia for two grown seasons (2019 and 2020). The genetic variability, phenotypic and genotypic association, and path coefficient (PC), based on grain yield (GY) and different yield-related agronomic traits, were evaluated. Analysis of variance and BLUPs value revealed a wide range of variability and the possibility of genetic selection for traits that are advantageous. Broad sense heritability (H) for all the traits ranged from 24.10% for grain yield (GY) to 57.11% for spike length (SL), indicating low to moderate inheritability. Genetic advance as a percentage of the mean (GAM) ranged from high (29.56%) for principal panicle weight (PPW) to moderate for all the traits except from plant high (PH) (7.31%). For all the traits, the phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV), indicating the magnitude of environmental conditions. GY was significantly correlated with all the traits at the genotypic and phenotypic level. According to the path coefficient, the traits PPW and SL displayed the highest direct effects on GY. Heatmap analysis demonstrated a clear segregation between the early and late genotypes based on their geographic origin. Based on the cluster analysis and FAI-BLUPS analysis, genotypes G11, G13, G12, G17 and G18 were selected as the best-performing genotypes with the shortest cycle.

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Phenotypic characterization of core accessions of grain amaranth (Amaranthus hypochondriacus L.)

Boro,

Kumar,

Yadav

2024

Genet Resour Crop Evol

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

Cited by 8 publications

References 50 publications

Genetic variation for grain nutritional profile and yield potential in sorghum and the possibility of selection for drought tolerance under irrigated conditions

Genetic variation for grain nutritional profile and yield potential in sorghum and the possibility of selection for drought tolerance under irrigated conditions

Characterization and Trait Association Analysis of 27 Pearl Millet Landraces in Southern Tunisia

Phenotypic characterization of core accessions of grain amaranth (Amaranthus hypochondriacus L.)

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