Hardy-rose Breeding at the Morden Research Station

Collicutt, Lynn M.

doi:10.21273/hortsci.27.10.1070

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The hybrid tea rose [Rosa L. (Hybrid Tea Group)] is the most popular type of rose. It does not survive consistently in climates cold er than hardiness zone 5 (Collicutt, 1992). Many of the rose cultivars used by Swedish gar den ers are imported from countries south of Swe den and are not acclimatized to the Swedish boreal vegetation zone (Walter, 1979).…”

Section: Originmentioning

confidence: 99%

Four Novel Swedish Rose Cultivars

Carlson-Nilsson¹

2004

HortSci

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Section: Originmentioning

confidence: 99%

Four Novel Swedish Rose Cultivars

Carlson-Nilsson¹

2004

HortSci

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“…In the last decades, interspecific breeding for fungus resistance between Hybrid Tea (HT)-like varieties and species has been carried out with R.rugosa and R.carolina (Svejda and Bolton, 1980), with R.arkansana, R.laxa and R.spinosissima (Collicutt, 1992), and with R.moschata, R.chinensis sempervirens, R.bella, R.nutkana and R.marginata (De Vries, 2000). Various ways to develop resistant germplasm have been indicated by Feuerhahn and Spethmann (1995), Ballard et al(1996) and .…”

Section: Fungus Resistance In Species Rosesmentioning

confidence: 99%

Developments in Breeding for Horizontal and Vertical Fungus Resistance in Roses

Vries¹,

Dubois²

2001

Acta Hortic.

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Garden rose varieties certified as 'Toproos' form the best choice for nurserymen and garden lovers in The Netherlands. However, these varieties had not been tested for fungus resistance before 1995. Therefore, 63 'Toproos' varieties planted in 3 different locations during 3 years, unsprayed, were re-selected by Dutch Permanent Judging Committee (VKC) for resistance to black spot, mildew and rose rust, as well as for disease effects on new growth. Re-selection greatly contributed to the status of the certificate, as only 44 varieties (68%) proved to be satisfactory under prevailing conditions. Observations indicated horizontal resistance for each disease; despite annual variation in disease level, genotype-location interaction did not occur. New growth was significantly affected by black spot and rose rust. Varieties infected by black spot and rose rust were the same. The selected varieties form an excellent collection of progenitors in a breeding programme for horizontal resistance. To introduce new black spot and mildew resistant germplasm, interspecific crosses between recurrent flowering, tetraploid (2n=4x=28) Hybrid Tea varieties and non-recurrent, putatively vertically resistant selections from R.moschata (2x), R.bella (4x), R.acicularis (6x), R.nutkana (6x) and R.marginata (8x) were carried out. Most crosses resulted in F1-populations. Sofar, F2-back crosses have yielded seeds. Percentages between 10-40% of recurrent flowering F2-seedlings are expected. Resistance of recurrent F2-plants will be tested.

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“…Repeated crossing with the more traditional shrub and garden roses has resulted in recombinants with good floral qualities and greatly improved hardiness. Hardiness in this rose cultivar group was obtained originally from R. arkansana Porter, a species native to the Great Plains region of North America (Collicutt, 1992;Marshall, 1977). 'Morden Sunrise' combines hardiness, abundant flowering, disease resistance and excellent plant form in a hardy shrub-type Parkland rose.…”

mentioning

confidence: 99%

'Morden Sunrise' Rose

Davidson¹

2002

HortSci

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Hardy-rose Breeding at the Morden Research Station

Cited by 3 publications

References 4 publications

Four Novel Swedish Rose Cultivars

Four Novel Swedish Rose Cultivars

Developments in Breeding for Horizontal and Vertical Fungus Resistance in Roses

'Morden Sunrise' Rose

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