&lt;b&gt;The genetic diversity of strawberry (&lt;i&gt;Fragaria ananassa&lt;/i&gt; Duch.) hybrids based on ISSR markers&lt;/b&gt; - doi: 10.4025/actasciagron.v35i4.16737

Nunes, Claudinéia Ferreira; Ferreira, Juliano Lino; Generoso, Andressa Leal; Dias, Mário Sérgio Carvalho; Pasqual, Moacir; Cançado, Geraldo Magela de Almeida

doi:10.4025/actasciagron.v35i4.16737

Cited by 17 publications

(8 citation statements)

References 19 publications

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“…The efficiency of using Bayesian statistics for the genetic diversity and populations structure analyses is well-known and has been used in different crops, such as olive (do Val et al, 2012), coffee (Setotaw et al, 2010), and strawberry (Nunes et al, 2013). In our study, the 94 accessions were grouped into three clusters that agreed with the geographical distribution of the populations.…”

Section: Discussionmentioning

confidence: 56%

Myrciaria dubia, an Amazonian fruit: population structure and its implications for germplasm conservation and genetic improvement

Nunes¹,

Setotaw²,

Pasqual³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. Myrciaria dubia (camu-camu) is an Amazon tree that produces a tart fruit with high vitamin C content. It is probably the fruit with the highest vitamin C content among all Brazilian fruit crops and it can be used to supplement daily vitamin C dose. This property has attracted the attention of consumers and, consequently, encouraged fruit farmers to produce it. In order to identify and select potential accessions for commercial exploitation and breeding programs, M. dubia has received considerable research attention. The identification and characterization of genetic diversity, as well as identification of the population structure of accessions preserved in germplasm banks are fundamental for the success of any breeding program. The objective of this study was to evaluate the genetic variability of 10 M. dubia populations obtained from the shores of Reis Lake, located in the municipality of Caracaraí, Roraima, Brazil. Fourteen polymorphic inter simple sequence repeat (ISSR) markers were used to study the population genetic diversity, which resulted in 108 identified alleles. Among the 14 primers, GCV, UBC810, and UBC827 produced the highest number of alleles. The study illustrated the suitability and efficiency of ISSR markers to study the genetic diversity of M. dubia accessions. We also revealed the existence of high genetic variability among both accessions and populations that can be exploited in future breeding programs and conservation activities of this species.

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Section: Discussionmentioning

confidence: 56%

Myrciaria dubia, an Amazonian fruit: population structure and its implications for germplasm conservation and genetic improvement

Nunes¹,

Setotaw²,

Pasqual³

et al. 2017

Genet. Mol. Res.

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“…This variability can be observed when comparing the means of hybrids in relation to the controls and the occurrence of outliers within populations (Figures 1-3). These results highlight the different genotypic constitutions for each hybrid, which makes it easier to select new cultivars with good traits of economic interest [33].…”

Section: Discussionmentioning

confidence: 96%

Selection of Experimental Hybrids of Strawberry Using Multivariate Analysis

et al. 2020

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The selection of superior strawberry genotypes is a complex process due to the high variability after hybridization that is caused by the octoploid nature and the heterozygosis, making the selection of multiple traits difficult. This study aimed to select strawberry hybrids with the potential for fresh consumption and/or processing by applying multivariate analysis to obtain traits of interest simultaneously. Hybrids were obtained from the crossing among seven commercial cultivars, defining a selection of 10% of them. The experimental design consisted of an augmented block design, with two commercial cultivars, Camarosa and Camino Real, as the controls. Different variables, including the number and average mass of commercial fruits, total fruit mass, pH, soluble solids (SS), titratable acidity (TA), SS/TA ratio, reducing sugars, pectin, ascorbic acid, phenolic compounds, and anthocyanin’s, were assessed. The selection of hybrids was based on the Mulamba and Mock rank-summation index, principal component analysis, and Ward’s hierarchical cluster analysis. The selection index was based on different weights being adopted for fresh market and processing. The assessed traits had high variability between hybrids. The highest selection gains were obtained for production traits, but the different weight assignment resulted in different classifications of hybrids for both fresh consumption and processing. Most of the hybrids selected by the index remained in the same group in the principal component and hierarchical cluster analyses, which indicates that multivariate analysis is a valuable tool for assisting in the selection of superior hybrids in the strawberry crop.

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“…We used ISSR molecular markers (inter-simple sequence repeat), widely deployed in studies of economically important species and their wild relatives that focus on genotype identification, genetic conservation and cultivar development (e.g. Nunes et al 2013;Martins et al 2014;Oliveira et al 2014;Rodrigues et al 2015;Carmo et al 2017;Wu et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity in wild populations of the restinga ecotype of the cashew (Anacardium occidentale) in coastal Piauí, Brazil

et al. 2019

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The cashew, Anacardium occidentale, is a globally important tropical fruit tree, but little is known about its natural infraspecific systematics. Wild Brazilian populations occur in the cerrado biome and coastal restinga vegetation. We investigated whether wild coastal and domesticated populations could be distinguished genetically using inter-simple repeat molecular markers (ISSRs). In total, 94 polymorphic loci from five primers were used to characterise genetic diversity, structure and differentiation in four wild restinga populations and four domesticated ones from eight localities in Piauí state (30 individuals per population). Genetic diversity was greater overall in wild (%P: 57.2%, I: 0.24, H e : 0.15) than domesticated populations (%P: 49.5%, I: 0.19, H e : 0.12). Significant structure was observed among the eight populations (between-population variance 22%, Φ PT = 0.217, P ≥ 0.001), but only weak distinctions between wild and domesticated groups. Cluster and principal coordinate analyses showed marked genetic disparity in populations. No correlation of genetic and geographical interpopulation distance was found (Mantel test, r = 0.02032, P = 0.4436). Bayesian analysis found an eight-group optimal model (ΔK = 50.2, K = 8), which mostly corresponded to sampled populations. Wild populations show strong genetic heterogeneity within a small geographical area despite probable gene flow between them. Within-population genetic diversity of wild plants varied considerably and was lower where extractive activities by local people are most intense (Labino population). The study underlines the importance of wild populations as in situ genetic reserves and the urgent need for further studies to support their conservation.

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<b>The genetic diversity of strawberry (<i>Fragaria ananassa</i> Duch.) hybrids based on ISSR markers</b> - doi: 10.4025/actasciagron.v35i4.16737

Cited by 17 publications

References 19 publications

Myrciaria dubia, an Amazonian fruit: population structure and its implications for germplasm conservation and genetic improvement

Myrciaria dubia, an Amazonian fruit: population structure and its implications for germplasm conservation and genetic improvement

Selection of Experimental Hybrids of Strawberry Using Multivariate Analysis

Genetic diversity in wild populations of the restinga ecotype of the cashew (Anacardium occidentale) in coastal Piauí, Brazil

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