Mapping Quantitative Trait Loci (QTL) for Resistance to Late Blight in Tomato

Panthee, Dilip R.; Piotrowski, Ann; Ibrahem, Ragy

doi:10.3390/ijms18071589

Cited by 23 publications

(12 citation statements)

References 35 publications

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“…Dominance effects were not estimated as lines were mostly in the homozygous condition in F 5:6 generation. QTL explaining more than 10% of the phenotypic variance was considered as major QTL [ 31 , 32 ]. Considering the bi-parental mapping population and the size of the mapping of the population used in this study, any QTL within 10 cM distance on the same chromosomes were regarded as a single QTL, and if detected in both environments were considered as a consistent QTL [ 33 ].…”

Section: Methodsmentioning

confidence: 99%

Detection of Quantitative Trait Loci (QTL) Associated with the Fruit Morphology of Tomato

Adhikari

McNellie

Panthee³

2020

Genes

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Tomato (Solanum lycopersicum L.) is the second most-consumed vegetable in the world. The market value and culinary purpose of tomato are often determined by fruit size and shape, which makes the genetic improvement of these traits a priority for tomato breeders. The main objective of the study was to detect quantitative trait loci (QTL) associated with the tomato fruit shape and size. The use of elite breeding materials in the genetic mapping studies will facilitate the detection of genetic loci of direct relevance to breeders. We performed QTL analysis in an intra-specific population of tomato developed from a cross between two elite breeding lines NC 30P × NC-22L-1(2008) consisting of 110 recombinant inbred lines (RIL). The precision software Tomato Analyzer (TA) was used to measure fruit morphology attributes associated with fruit shape and size traits. The RIL population was genotyped with the SolCAP 7720 SNP array. We identified novel QTL controlling elongated fruit shape on chromosome 10, explaining up to 24% of the phenotypic variance. This information will be useful in improving tomato fruit morphology traits.

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Section: Methodsmentioning

confidence: 99%

Detection of Quantitative Trait Loci (QTL) Associated with the Fruit Morphology of Tomato

Adhikari

McNellie

Panthee³

2020

Genes

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“…An optimized subset of 140 SNPs markers that were derived from the 7,725 SNP array developed by the Solanaceae Coordinated Agricultural Project (SolCap) were used (Panthee et al, 2017). The polymorphism rates between the tomato lines aided in the selection of the markers.…”

Section: Background Selectionmentioning

confidence: 99%

Marker assisted backcrossing of alcobaca gene into two elite tomato breeding lines

Osei¹,

Danquah²,

Adu-Dapaah³

et al. 2022

Front. Hortic.

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Tomato is one of the most important vegetable crops cultivated and consumed worldwide. Demand is increasing daily because of increase in per capita fresh fruit consumption. Despite the economic importance of tomato, it has relatively short shelf-life after ripening and experiences remarkable post-harvest losses. This study was aimed at using marker-assisted backcrossing (MABC) to transfer shelf-life gene (alc) into the genetic background of two elite Ghanaian tomato breeding lines. The MABC derived lines at BC2F3 were evaluated to confirm selections using molecular markers. All the MABC-derived lines gave significant extended shelf life compared to the checks except for Alc-LA3134, the alc donor parent, which was, however, not significantly different from one of the backcrosses (BC2F2.3-E-80-19-26). This confirms that the genetic regulation of the shelf-life trait is dependent on the alc gene. The performance of the donor check (Alc-LA3134) against the 12 MABC-derived lines indicated no significant differences for the fruit firmness (except for BC2F2.3-E-80-19-4), number of locules per fruit and shelf life (for only BC2F2.3-E-80-19-26), thus suggesting similar backgrounds of the MABC as the recurrent parents. A considerable increase in the shelf-life value was observed among the MABC-derived lines. The introgression of the alc gene into cultivated tomatoes for extended shelf-life could reduce post-harvest losses of tomato in Ghana.

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“…Transgene Insertion Sites (Salvo-Garrido et al, 2004) Genetic and physical mapping (Simpson and Luna-Martinez, 2011) Maize resistance against borer (Sadder and Weber, 2002) QTL Mapping molecular breeding (Khan, 2015); Mulualem and Bekeko, 2015;Veeresha et al, 2015;Sehgal et al, 2016;Xu et al, 2017) resistance to multiple races of loose smut in wheat (Kumar et al, 2018); resistance to late blight in tomato (Panthee et al, 2017) Planthopper resistance in rice (Ren et al, 2004;Yang et al, 2019),…”

Section: Genomicsmentioning

confidence: 99%

Applications of Biotechnology for Characterization of Plants and Pests as the Key Components of Plant Protection and Production Strategies: A Review

Alemu

2020

Int J Appl Sci Biotechnol

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The second Sustainable Developmental Goals (SDG), among the seventeen SDG, is concerned with the pursuit of global food security and agricultural sustainability, which become the key to the success of the entire SDG. Whereas agricultural production and productivity are heavily threatened by the incidence of pests that inflict huge losses in various forms. This calls for prompt applications of biotechnology for the fast, accurate and reliable means for characterization of plant generic resources and pests as it is the pre-requisite and gateway for designing appropriate plant protection and production strategies. It is imperative that pests be identified properly so that judicious use of the literature can be made and sustainable management strategies can be implemented at the right stage. To this end, the application of biotechnology has made significant advances for reliable characterization of plant genetic resources as well as accurate diagnosis of pests, study of their genetic diversity and variability, detailed mechanisms of their transmission and evolutionary relationships. Accordingly, this review article covers the comprehensive account of the various molecular techniques, genome mapping and OMICS sciences utilized for characterization plants and pests that ultimately allow the detailed study of the biology and epidemiology of pests at any stage of their life cycle. The resulting data are eventually employed for enhancing successful implementation of sustainable plant protection and production strategies. In conclusion, the increasing projections of transboundary pests, environmental and abiotic factors together with the continuous scientific advancements and breakthroughs have made biotechnology to be an important engine of bioeconomy for generating invaluable products, processes and services. Int. J. Appl. Sci. Biotechnol. Vol 8(3): 247-288

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Mapping Quantitative Trait Loci (QTL) for Resistance to Late Blight in Tomato

Cited by 23 publications

References 35 publications

Detection of Quantitative Trait Loci (QTL) Associated with the Fruit Morphology of Tomato

Detection of Quantitative Trait Loci (QTL) Associated with the Fruit Morphology of Tomato

Marker assisted backcrossing of alcobaca gene into two elite tomato breeding lines

Applications of Biotechnology for Characterization of Plants and Pests as the Key Components of Plant Protection and Production Strategies: A Review

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