Strawberries

Hancock, James F.; Sjulin, Thomas M.; Lobos, Germán

doi:10.1007/978-1-4020-6907-9_13

Cited by 49 publications

(38 citation statements)

References 165 publications

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“…Until now, the cultivar ‘Elsanta’ is dominating strawberry production in Europe (Hancock et al. ) but it is unlikely, that crosses with this cultivar raise the breeding success due to its mostly insignificant GCA values (Table ). A look on the parentage of the cultivars used in the diallel approach reveals that ‘Daroyal’ and ‘Darselect’ are offspring from the same crossing of ‘Elsanta’ × ‘Parker’ (Table ), but ‘Daroyal’ has a higher value for further breeding progress concerning its GCA values (Table ).…”

Section: Discussionmentioning

confidence: 99%

A diallel crossing approach aimed on selection for ripening time and yield in breeding of new strawberry (Fragaria × ananassa Duch.) cultivars

et al. 2013

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The extension of the ripening season in open field production is of high economic interest for strawberry growers. Therefore, targeted breeding for extreme early or late ripening cultivars with high yield potential is of particular interest. Thirteen strawberry cultivars were crossed in a reciprocal way without selfing, and the 144 resulting F1 populations were evaluated in a field trial over a period of two consecutive years. The data were analysed using a mixed‐model approach adapted for diallel crossing designs using SAS 9.3. The variability in the crossing approach is mainly based on the general combining ability (GCA) of the cultivars (additive effects). Specific and reciprocal combining abilities (non‐additive effects) appear less important. The highest GCAs for the trait Marketable Yield were found for the cultivars ‘Polka’ and ‘Yamaska’. The trait Earliness is bilateral with significantly low GCAs for early ripening in ‘Clery’ and ‘Daroyal’ and significantly high GCAs for late ripening in ‘Yamaska’ and ‘Florence’. Crosses with these cultivars are likely to deliver populations with both high yield and an extended ripening period.

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Section: Discussionmentioning

confidence: 99%

A diallel crossing approach aimed on selection for ripening time and yield in breeding of new strawberry (Fragaria × ananassa Duch.) cultivars

et al. 2013

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“…in the Royal Botanical Garden of the French king around 1700 (Finn et al , ). This subspecies was subsequently named as Fragaria × ananassa by the great French botanist, Antoine Nicholas Duchesne (Hancock et al , ). Due to the superior fruit quality of this hybrid subspecies, it was quickly distributed across the world and gradually displaced different indigenous cultivated subspecies of F. chiloensis in North and South America (Finn et al , ).…”

Section: Introductionmentioning

confidence: 99%

“…Due to the superior fruit quality of this hybrid subspecies, it was quickly distributed across the world and gradually displaced different indigenous cultivated subspecies of F. chiloensis in North and South America (Finn et al , ). By the middle of the 20th century, Fragaria × ananassa and its derivatives had emerged as the most dominant cultivated strawberry varieties across the world (Hancock et al , ). As globalization has progressed, this octoploid cultivated strawberry subspecies has grown to be one of the most important fruit crop plants and its total annual production had reached over 8.11 million tonnes by 2014 (FAO, ).…”

Section: Introductionmentioning

confidence: 99%

The control of red colour by a family of MYB transcription factors in octoploid strawberry (Fragaria × ananassa) fruits

Wang

Zhang

Yang

et al. 2019

Plant Biotechnology Journal

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Summary Octoploid strawberry (Fragaria × ananassa Duch.) is a model plant for research and one of the most important non‐climacteric fruit crops throughout the world. The associations between regulatory networks and metabolite composition were explored for one of the most critical agricultural properties in octoploid strawberry, fruit colour. Differences in the levels of flavonoids are due to the differences in the expression of structural and regulatory genes involved in flavonoid biosynthesis. The molecular mechanisms underlying differences in fruit colour were compared between red and white octoploid strawberry varieties. FaMYB genes had combinatorial effects in determining the red colour of fruit through the regulation of flavonoid biosynthesis in response to the increase in endogenous ABA at the final stage of fruit development. Analysis of alleles of FaMYB10 and FaMYB1 in red and white strawberry varieties led to the discovery of a white‐specific variant allele of FaMYB10, FaMYB10‐2. Its coding sequence possessed an ACTTATAC insertion in the genomic region encoding the C‐terminus of the protein. This insertion introduced a predicted premature termination codon, which suggested the loss of intact FaMYB10 protein playing a critical role in the loss of red colour in white octoploid strawberry.

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“…These mapping studies also conclusively revealed that the octoploid strawberry showed genome-wide disomic inheritance [1,2] and could therefore be classified as a full allopolyploid.…”

Section: Introductionmentioning

confidence: 99%

Genomic rearrangements and signatures of breeding in the allo-octoploid strawberry as revealed through an allele dose based SSR linkage map

et al. 2014

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BackgroundBreeders in the allo-octoploid strawberry currently make little use of molecular marker tools. As a first step of a QTL discovery project on fruit quality traits and resistance to soil-borne pathogens such as Phytophthora cactorum and Verticillium we built a genome-wide SSR linkage map for the cross Holiday x Korona. We used the previously published MADCE method to obtain full haplotype information for both of the parental cultivars, facilitating in-depth studies on their genomic organisation.ResultsThe linkage map incorporates 508 segregating loci and represents each of the 28 chromosome pairs of octoploid strawberry, spanning an estimated length of 2050 cM. The sub-genomes are denoted according to their sequence divergence from F. vesca as revealed by marker performance. The map revealed high overall synteny between the sub-genomes, but also revealed two large inversions on LG2C and LG2D, of which the latter was confirmed using a separate mapping population. We discovered interesting breeding features within the parental cultivars by in-depth analysis of our haplotype data. The linkage map-derived homozygosity level of Holiday was similar to the pedigree-derived inbreeding level (33% and 29%, respectively). For Korona we found that the observed homozygosity level was over three times higher than expected from the pedigree (13% versus 3.6%). This could indicate selection pressure on genes that have favourable effects in homozygous states. The level of kinship between Holiday and Korona derived from our linkage map was 2.5 times higher than the pedigree-derived value. This large difference could be evidence of selection pressure enacted by strawberry breeders towards specific haplotypes.ConclusionThe obtained SSR linkage map provides a good base for QTL discovery. It also provides the first biologically relevant basis for the discernment and notation of sub-genomes. For the first time, we revealed genomic rearrangements that were verified in a separate mapping population. We believe that haplotype information will become increasingly important in identifying marker-trait relationships and regions that are under selection pressure within breeding material. Our attempt at providing a biological basis for the discernment of sub-genomes warrants follow-up studies to streamline the naming of the sub-genomes among different octoploid strawberry maps.

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Strawberries

Cited by 49 publications

References 165 publications

A diallel crossing approach aimed on selection for ripening time and yield in breeding of new strawberry (Fragaria × ananassa Duch.) cultivars

A diallel crossing approach aimed on selection for ripening time and yield in breeding of new strawberry (Fragaria × ananassa Duch.) cultivars

The control of red colour by a family of MYB transcription factors in octoploid strawberry (Fragaria × ananassa) fruits

Genomic rearrangements and signatures of breeding in the allo-octoploid strawberry as revealed through an allele dose based SSR linkage map

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