Progress Report in Fragaria Species Hybridization at Balsgård, Sweden

Trajkovski, Klemen Kozmus

doi:10.17660/actahortic.1993.348.14

Cited by 10 publications

(8 citation statements)

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“…Several attempts to increase the flavour quality of cultivars by cross breeding with accessions of wild species have been reported (Hancock and Luby 1993, Trajkowski 1993, 1997, Mochizuki et al. 1997, Noguchi et al.…”

Section: Discussionmentioning

confidence: 99%

Inheritance of aroma compounds in a model population of Fragaria × ananassa Duch.

et al. 2007

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The inheritance of important aroma compounds is demonstrated by the use of a model population of Fragaria · ananassa. Two cultivars were chosen for the crossing, ÔMieze SchindlerÕ and ÔElsantaÕ, which differ strongly in pedigree, phenotype, and fruit traits, including flavour. Two hundred seedlings of this cross-combination were randomly selected from a population of 438 seedlings and propagated, with three plants per seedling. Aroma analysis was performed by automated headspace solid phase micro-extraction in combination with non-targeted data analysis (pattern recognition). This method can assist breeding programmes by the preparation and analysis of hundreds of samples by a simple procedure. The method was backed up by the substance identification using gas chromatography/mass spectrometry. Data processing of 78 detectable volatile compounds by Chromstat TM in the F 1 population showed very high variability of the volatile patterns. The ester methyl anthranilate (MA) is a discriminative key compound, being present only in the mother cultivar ÔMieze SchindlerÕ, and not detectable in ÔElsantaÕ. Methyl anthranilate was detectable in one fourth of the F 1 population. This low degree of inheritance shows that this important compound is easily lost in the breeding process, which could explain why all investigated modern cultivars do not contain MA. The results are valuable for the choice of breeding partners and for selection in seedling populations.

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Section: Discussionmentioning

confidence: 99%

Inheritance of aroma compounds in a model population of Fragaria × ananassa Duch.

et al. 2007

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“…'Florika' (Jones 1966;Bauer and Bauer 1979). F. moschata is permanently an object of breeding activities (Trajkowski 1993). However, cross breeding resulted in steril F1 plants (Hancock and Luby 1993).…”

Section: Breeding Potential Of Investigated Accessionsmentioning

confidence: 99%

Diversity of aroma patterns in wild and cultivated Fragaria accessions

Ulrich

Komes

Olbricht

et al. 2006

Genet Resour Crop Evol

122

113

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Plant breeders are interested in strawberry species as donors of volatile compounds in breeding programmes because of the diversity and intensity of wild strawberry aroma. Therefore, the topic of this paper is the prospective analysis of four accessions of four wild strawberry accessions in comparison to a standard cultivar of Fragaria · ananassa Duch. by using human sensory, gas chromatography mass spectrometry (GCMS) and gas chromatographyolfactometry (GCO). The wild species have higher aroma intensities compared with the cultivated one. The flavour quality differs significantly. Semiquantitative GC analysis revealed that F. · ananassa cv. 'Elsanta' has the lowest content of volatile compounds whereas Fragaria moschata L. 'Cotta' has the highest. The aroma impressions, measured by GCO, support the findings of GCMS analyses. The nasal impact frequency (NIF)-profiles of the wild types are more manifold and of higher intensities than those of the cultivated F. · ananassa cv. 'Elsanta' which corresponds with the overall flavour impression when tasting the fresh fruits.

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“…A fertile SO released by Evans was created by crossing F. moschata (6×) × F. nubicola (2×) and applying colchicine to seeds to create an octoploid hybrid (Evans, 1982a(Evans, , 1982c. Guelph SO1 was semi-fertile and was used in breeding programs in Guelph (Sangiacomo and Sullivan, 1994) and Sweden (Trajkovski, 1993). Kantor (1984) introgressed F. moschata into F. × ananassa by crossing F. moschata directly to cultivars and using mutagens to overcome sterility in the 7× hybrids.…”

Section: Introductionmentioning

confidence: 99%

“…These include resistance to angular leafspot (Xanthomonas fragaria) and powdery mildew (Sphaerotheca macularis) leaf diseases (Evans, 1982c;Kantor, 1984;Maas et al, 1995;Trajkovski, 1993), cold hardiness (Kantor, 1984;Reed, 1966), large plants more vigorous than octoploid species (Reed, 1966), unique, highly aromatic flavor (Kantor, 1984;Reed, 1966), upright flower stalks that hold fruit above the canopy (Evans, 1982a;Kantor, 1984) and uniform ripening (Reed, 1966). Evans (1977) described a means of taking F. moschata to the synthetic octoploid level by first crossing it with a diploid species to create a tetraploid.…”

Section: Introductionmentioning

confidence: 99%

Interspecific hybridization of Fragaria moschata with two diploid species, F. nubicola and F. viridis

Bors

Sullivan

2005

Euphytica

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The crosses Fragaria moschata × F. nubicola, F. moschata × F. viridis, and their reciprocal combinations were done to create tetraploids for eventual introgression into octoploid cultivars of Fragaria × ananassa via the synthetic octoploid system. The combination F. nubicola × F. moschata averaged 3.3 healthy plants/pollination, which was 2.3 times higher than the next best combination, F. moschata × F. viridis. Fragaria viridis × F. moschata crosses averaged only 0.1 healthy plants/pollination and no plants were obtained from F. moschata × F. nubicola hybridizations. The success of the F. nubicola × F. moschata crosses in this study indicated that embryo/endosperm ratios were not as important a factor in producing hybrids with F. moschata × diploids species, as previously suggested.Although 90% of pollinated flowers set fruit with an average of 19 seeds/pollination only 15% of the seeds contained healthy, white embryos and only 38% of these developed into healthy seedlings. The remaining 62% of embryos lacked pigment, had short hypocotyls or arrested development after slight expansion out of the seed coat. Only 39% of the crosses resulted in viable progenies. After one year, 27% of these hybrids bloomed and 71% of the blooming hybrids were tetraploids. All six diploid and six of the seven hexaploid accessions were successfully incorporated into 89 hybrids.

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Progress Report in Fragaria Species Hybridization at Balsgård, Sweden

Cited by 10 publications

References 0 publications

Inheritance of aroma compounds in a model population of Fragaria × ananassa Duch.

Inheritance of aroma compounds in a model population of Fragaria × ananassa Duch.

Diversity of aroma patterns in wild and cultivated Fragaria accessions

Interspecific hybridization of Fragaria moschata with two diploid species, F. nubicola and F. viridis

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