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Agronomic, Genetic and Quantitative Trait Characterization of Nightshade Accessions

Nightshades are among many underutilized and neglected African indigenous leafy vegetable (AILVs) species, and if adequately exploited, they could improve food, nutrition and income among the rural population. Morphological characterization of available accessions is key for the breeder to identify...

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Autores principales: Mabuza, Ntombifuthi Msewu, Mavengahama, Sydney, Mokolobate, Motlogeloa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182925/
https://www.ncbi.nlm.nih.gov/pubmed/35684262
http://dx.doi.org/10.3390/plants11111489
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author Mabuza, Ntombifuthi Msewu
Mavengahama, Sydney
Mokolobate, Motlogeloa
author_facet Mabuza, Ntombifuthi Msewu
Mavengahama, Sydney
Mokolobate, Motlogeloa
author_sort Mabuza, Ntombifuthi Msewu
collection PubMed
description Nightshades are among many underutilized and neglected African indigenous leafy vegetable (AILVs) species, and if adequately exploited, they could improve food, nutrition and income among the rural population. Morphological characterization of available accessions is key for the breeder to identify and select superior accessions as parents for utilization in breeding programs. Fifteen accessions of nightshade were evaluated for morpho-agronomic variation in an open field trial implemented in a randomized complete block design with three replicates across the two growing seasons. The accessions exhibited significant (p < 0.0001) differences in all quantitative traits. The data analysis showed that Scabrum (805.30 g/plant) followed by Ncampus (718.60 g/plant) produced the highest fresh leaf yield; for fruit fresh yield, the accession NigSN18 (1782.00 g/plant) recorded the highest, followed by ManTown (1507.90 g/plant). The accession N5547 had the tallest plants (66.83 cm), followed by accession Timbali (62.31 cm). The first four principal components (PCs) accounted for 86.82% of the total variation, which had an eigenvalue greater than 1. The cluster analysis grouped the accessions into 14 clusters based on their genetic similarity. Results of genetic studies revealed that phenotypic coefficient variation was higher than genotypic coefficient of variation for all parameters evaluated, indicating the environmental influence on the expression of these traits. Both GCV and PCV were higher for the largest leaf area, moderate to high for the remaining characters and low for leaf fresh yield per plant. High heritability coupled with genetic advance as a mean percentage (H(2)-70.59%, GAM-142.4%), indicating the presence of additive gene effects. Hence, selection can be employed for the improvement of this trait in nightshades. The study revealed sufficient genetic variability in the nightshade accessions, which can be exploited for crop improvement.
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spelling pubmed-91829252022-06-10 Agronomic, Genetic and Quantitative Trait Characterization of Nightshade Accessions Mabuza, Ntombifuthi Msewu Mavengahama, Sydney Mokolobate, Motlogeloa Plants (Basel) Article Nightshades are among many underutilized and neglected African indigenous leafy vegetable (AILVs) species, and if adequately exploited, they could improve food, nutrition and income among the rural population. Morphological characterization of available accessions is key for the breeder to identify and select superior accessions as parents for utilization in breeding programs. Fifteen accessions of nightshade were evaluated for morpho-agronomic variation in an open field trial implemented in a randomized complete block design with three replicates across the two growing seasons. The accessions exhibited significant (p < 0.0001) differences in all quantitative traits. The data analysis showed that Scabrum (805.30 g/plant) followed by Ncampus (718.60 g/plant) produced the highest fresh leaf yield; for fruit fresh yield, the accession NigSN18 (1782.00 g/plant) recorded the highest, followed by ManTown (1507.90 g/plant). The accession N5547 had the tallest plants (66.83 cm), followed by accession Timbali (62.31 cm). The first four principal components (PCs) accounted for 86.82% of the total variation, which had an eigenvalue greater than 1. The cluster analysis grouped the accessions into 14 clusters based on their genetic similarity. Results of genetic studies revealed that phenotypic coefficient variation was higher than genotypic coefficient of variation for all parameters evaluated, indicating the environmental influence on the expression of these traits. Both GCV and PCV were higher for the largest leaf area, moderate to high for the remaining characters and low for leaf fresh yield per plant. High heritability coupled with genetic advance as a mean percentage (H(2)-70.59%, GAM-142.4%), indicating the presence of additive gene effects. Hence, selection can be employed for the improvement of this trait in nightshades. The study revealed sufficient genetic variability in the nightshade accessions, which can be exploited for crop improvement. MDPI 2022-05-31 /pmc/articles/PMC9182925/ /pubmed/35684262 http://dx.doi.org/10.3390/plants11111489 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mabuza, Ntombifuthi Msewu
Mavengahama, Sydney
Mokolobate, Motlogeloa
Agronomic, Genetic and Quantitative Trait Characterization of Nightshade Accessions
title Agronomic, Genetic and Quantitative Trait Characterization of Nightshade Accessions
title_full Agronomic, Genetic and Quantitative Trait Characterization of Nightshade Accessions
title_fullStr Agronomic, Genetic and Quantitative Trait Characterization of Nightshade Accessions
title_full_unstemmed Agronomic, Genetic and Quantitative Trait Characterization of Nightshade Accessions
title_short Agronomic, Genetic and Quantitative Trait Characterization of Nightshade Accessions
title_sort agronomic, genetic and quantitative trait characterization of nightshade accessions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182925/
https://www.ncbi.nlm.nih.gov/pubmed/35684262
http://dx.doi.org/10.3390/plants11111489
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