Quantitative and Qualitative Differences in Morphological Traits Revealed between Diploid Fragaria Species

Geibel, M.; Hawkins, Julie A.; Wilkinson, M. J.; Battey, Nicholas H.; Simpson, D. W.

doi:10.1093/aob/mch217

Cited by 28 publications

(19 citation statements)

References 22 publications

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“…Notably, our investigation included a widely studied and utilized accession, CFRA 520 ( = PI551851 = IPK accession 94056-33.K = FDP 601), that had initially been misidentified as F. nubicola [28] and referred to as F. nubicola by a host of researchers [2], [3], [47], [48], [49], [50], [51], [52], [53], [54], [55]. This error was recognized and corrected by Staudt [28], who reclassified CFRA 520 as F. bucharica .…”

Section: Methodsmentioning

confidence: 99%

A Phylogenetic Analysis of the Genus Fragaria (Strawberry) Using Intron-Containing Sequence from the ADH-1 Gene

DiMeglio

Staudt²,

et al. 2014

PLoS ONE

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The genus Fragaria encompasses species at ploidy levels ranging from diploid to decaploid. The cultivated strawberry, Fragaria×ananassa, and its two immediate progenitors, F. chiloensis and F. virginiana, are octoploids. To elucidate the ancestries of these octoploid species, we performed a phylogenetic analysis using intron-containing sequences of the nuclear ADH-1 gene from 39 germplasm accessions representing nineteen Fragaria species and one outgroup species, Dasiphora fruticosa. All trees from Maximum Parsimony and Maximum Likelihood analyses showed two major clades, Clade A and Clade B. Each of the sampled octoploids contributed alleles to both major clades. All octoploid-derived alleles in Clade A clustered with alleles of diploid F. vesca, with the exception of one octoploid allele that clustered with the alleles of diploid F. mandshurica. All octoploid-derived alleles in clade B clustered with the alleles of only one diploid species, F. iinumae. When gaps encoded as binary characters were included in the Maximum Parsimony analysis, tree resolution was improved with the addition of six nodes, and the bootstrap support was generally higher, rising above the 50% threshold for an additional nine branches. These results, coupled with the congruence of the sequence data and the coded gap data, validate and encourage the employment of sequence sets containing gaps for phylogenetic analysis. Our phylogenetic conclusions, based upon sequence data from the ADH-1 gene located on F. vesca linkage group II, complement and generally agree with those obtained from analyses of protein-encoding genes GBSSI-2 and DHAR located on F. vesca linkage groups V and VII, respectively, but differ from a previous study that utilized rDNA sequences and did not detect the ancestral role of F. iinumae.

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Section: Methodsmentioning

confidence: 99%

A Phylogenetic Analysis of the Genus Fragaria (Strawberry) Using Intron-Containing Sequence from the ADH-1 Gene

DiMeglio

Staudt²,

et al. 2014

PLoS ONE

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“…A principal component analysis (PCA) and multidimensional scaling were employed to explore the correlation structure of the quantitative and qualitative characteristics, respectively, and to assess the relative importance of each characteristic to dissimilarity between taxa. Both procedures allowed the variance within the phenotypic characteristics to be considered simultaneously ( Sargent et al 2004 ).…”

Section: Methodsmentioning

confidence: 99%

Morphological Variation within and Between taxa of the Santolina rosmarinifolia L. (Asteraceae: Anthemideae) Aggregate

Rivero-Guerra¹

2011

Systematic Botany

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“…A comprehensive evaluation would include the following descriptors: (1) yield, plant habit, firmness, (2) fruit size, time of ripening, stolon number, flower size (3) time of flowering, leaf color, (4) fruit characteristics like color, flesh color, band without achenes, insertion of calyx, and size of calyx in relation to the fruit diameter. Similar analyses in Fragaria wild species accessions, leaf, flower and stolon descriptors resulted in higher significance [24,30]. The first grouping of the cultivars could be derived from scores for the first four principal components (Table 5).…”

Section: Discussionmentioning

confidence: 75%

Morphological evaluation of 108 strawberry cultivars – and consequences for the use of descriptors

Höfer

Drewes-Alwarez

Scheewe

et al. 2012

Journal of Berry Research

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Strawberry cultivars in current commercial use have a very narrow genetic base and reduced morphological and genetic diversity that puts them at risk from disease and climate change. Germplasm collections hold examples of the agricultural biodiversity of small berries where they are conserved, characterized and made available to breeders to improve productivity. Phenological evaluations of existing strawberry cultivars provide information for use by breeders in developing cultivars with improved qualities and more diverse genetic background. Leaves, flowers and fruits are the most important morphological descriptors for identification of strawberry cultivars. A comprehensive catalogue of descriptors drawn up by UPOV and IPGRI served as the basis for evaluation of 108 cultivars in a field trial. Each plot consisted of 21 one-year-old plants per genotype and plants were evaluated once with a range of descriptors; 10 of plant and leaf morphology, 7 of the flower and 25 of the fruit. On the basis of this comprehensive evaluation and data analysis, eighteen primary descriptors (plant, leaf, flower and fruit characteristics) independent of cultivation effects were selected for a large screening. Further descriptors for yield, inner fruit quality and disease resistance should be used as secondary descriptors as they are more environmentally influenced. These descriptors were proposed as appropriate primary and secondary descriptors for the European GENBERRY project of the cultivated strawberry (Fragaria x ananassa Duch.).

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Quantitative and Qualitative Differences in Morphological Traits Revealed between Diploid Fragaria Species

Cited by 28 publications

References 22 publications

A Phylogenetic Analysis of the Genus Fragaria (Strawberry) Using Intron-Containing Sequence from the ADH-1 Gene

A Phylogenetic Analysis of the Genus Fragaria (Strawberry) Using Intron-Containing Sequence from the ADH-1 Gene

Morphological Variation within and Between taxa of the Santolina rosmarinifolia L. (Asteraceae: Anthemideae) Aggregate

Morphological evaluation of 108 strawberry cultivars – and consequences for the use of descriptors

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