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- Q22285523 subject Q6535635.
- Q22285523 abstract "Rosa kordesii, or Rosa × kordesii is a type of rose that arose naturally from hybridization followed by chromosome doubling. A hybrid between R. rugosa and R. wichurana was created called Rosa 'Max Graf', but it was diploid and nearly sterile, producing flowers but no fruit. This rose produced a few viable seeds as a result of self-pollination, and the seedlings that resulted were tetraploid instead of diploid, i.e., the chromosomes of both pollen and egg cells had been naturally duplicated. The tetraploid seedlings are amphidiploids. A selection with double deep pink flowers and repeat bloom, also called 'K01 AgCan' was released by W. Kordes' Söhne in 1951.These tetraploid roses interbreed readily with one another, but not with their diploid ancestors. Under the biological species concept, a new species name Rosa kordesii was created for the tetraploid hybrid roses and their descendants.Amphidiploid roses can also be created deliberately from diploid-diploid hybrids by using colchicine spray on the growing tips of the plants. That strategy gives few successes, however, because the plant tissue has various chromosome numbers in different cells. Amphidiploid roses including Rosa kordesii have been used to some degree in breeding programs in combination with naturally occurring tetraploid roses.".
- Q22285523 class Q165468.
- Q22285523 division Q25314.
- Q22285523 family Q46299.
- Q22285523 genus Q34687.
- Q22285523 kingdom Q756.
- Q22285523 order Q21895.
- Q22285523 order Q338878.
- Q22285523 thumbnail Rosa_kordesii_L_15.jpg?width=300.
- Q22285523 wikiPageWikiLink Q118406.
- Q22285523 wikiPageWikiLink Q1321695.
- Q22285523 wikiPageWikiLink Q165468.
- Q22285523 wikiPageWikiLink Q213410.
- Q22285523 wikiPageWikiLink Q21895.
- Q22285523 wikiPageWikiLink Q25314.
- Q22285523 wikiPageWikiLink Q2984250.
- Q22285523 wikiPageWikiLink Q326224.
- Q22285523 wikiPageWikiLink Q338878.
- Q22285523 wikiPageWikiLink Q34687.
- Q22285523 wikiPageWikiLink Q42621.
- Q22285523 wikiPageWikiLink Q46299.
- Q22285523 wikiPageWikiLink Q553212.
- Q22285523 wikiPageWikiLink Q634975.
- Q22285523 wikiPageWikiLink Q6535635.
- Q22285523 wikiPageWikiLink Q756.
- Q22285523 familia Q46299.
- Q22285523 genus "Rosa".
- Q22285523 ordo Q21895.
- Q22285523 regnum "Plantae".
- Q22285523 unrankedClassis Q165468.
- Q22285523 unrankedDivisio Q25314.
- Q22285523 unrankedOrdo Q338878.
- Q22285523 type Eukaryote.
- Q22285523 type Plant.
- Q22285523 type Species.
- Q22285523 type Thing.
- Q22285523 type Q19088.
- Q22285523 type Q756.
- Q22285523 comment "Rosa kordesii, or Rosa × kordesii is a type of rose that arose naturally from hybridization followed by chromosome doubling. A hybrid between R. rugosa and R. wichurana was created called Rosa 'Max Graf', but it was diploid and nearly sterile, producing flowers but no fruit. This rose produced a few viable seeds as a result of self-pollination, and the seedlings that resulted were tetraploid instead of diploid, i.e., the chromosomes of both pollen and egg cells had been naturally duplicated.".
- Q22285523 label "Rosa kordesii".
- Q22285523 depiction Rosa_kordesii_L_15.jpg.