Genomic and Phenotypic Diversity of Cultivated and Wild Tomatoes with Varying Levels of Heat Tolerance

Simple item page
dc.contributor.authorAyenan, Mathieu Anatole Tele
dc.contributor.authorDanquah, Agyeman
dc.contributor.authorAgre, Paterne A.
dc.date.accessioned2023-04-21T19:27:52Z
dc.date.available2023-04-21T19:27:52Z
dc.date.issued2021-03-29
dc.description.abstractAssessment of genetic variability in heat-tolerant tomato germplasm is a pre-requisite to improve yield and fruit quality under heat stress. We assessed the population structure and diversity in a panel of three Solanum pimpinellifolium (wild tomatoes) and 42 S. lycopersicum (cultivated tomatoes) lines and accessions with varying heat tolerance levels. The DArTseq marker was used for the sequencing and 5270 informative single nucleotide polymorphism (SNP) markers were retained for the genomic analysis. The germplasm was evaluated under two heat stress environments for five yield and flower related traits. The phenotypic evaluation revealed moderate broad-sense heritabilities for fruit weight per plant and high broad-sense heritabilities for fruit weight, number of inflorescences per plant, and number of flowers per inflorescence. The hierarchical clustering based on identity by state dissimilarity matrix and UPGMA grouped the germplasm into three clusters. The cluster analysis based on heat-tolerance traits separated the germplasm collection into five clusters. The correlation between the phenotypic and genomic-based distance matrices was low (r = 0.2, p < 0.05). The joint phenotypic and genomic-based clustering grouped the germplasm collection into five clusters well defined for their response to heat stress ranging from highly sensitive to highly tolerant groups. The heat-sensitive and heat-tolerant clusters of S. lycopersicum lines were differentiated by a specific pattern of minor allele frequency distribution on chromosome 11. The joint phenotypic and genomic analysis revealed important diversity within the germplasm collection. This study provides the basis for efficient selection of parental lines to breed heat-tolerant varieties.en_US
dc.description.sponsorshipACE: Crop Improvementen_US
dc.identifier.citationhttps://doi.org/10.3390/genes12040503en_US
dc.identifier.issn2073-4425
dc.identifier.urihttps://datad.aau.org/handle/123456789/1500
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.subjectgenetic variabilityen_US
dc.subjectheat toleranceen_US
dc.subjectheritabilityen_US
dc.subjectSNP markersen_US
dc.subjecttomatoesen_US
dc.subjectPeter Hansonen_US
dc.subjectIsaac Kwadwo Asanteen_US
dc.subjectEric Yirenkyi Danquahen_US
dc.subjectAgricen_US
dc.subjectUniversity of Ghanaen_US
dc.titleGenomic and Phenotypic Diversity of Cultivated and Wild Tomatoes with Varying Levels of Heat Toleranceen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Genomic and Phenotypic Diversity of Cultivated and Wild Tomatoes.pdf
Size:
1.61 MB
Format:
Adobe Portable Document Format
Description:
Main article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Agriculture