Morphological Differentiation of the Flower Bud of Rosa persica Physical Location of 45S rDNA and 5S rDNA in the Genomes of Three Wild Rose Species Physical Location of 45S rDNA and 5S rDNA in the Genomes of Three Wild Rose Species Morphological Differentiation of the Flower Bud of Rosa persica Study on Genetic Diversity of Some Rosa Germplasm in Yunnan Based on SSR Markers Relationship of 17 Rosa Plants Detected by Morphology and ISSR Analysis A new species of Rosa L.(Rosaceae) from Guizhou, China Study on Genetic Diversity of Some Rosa Germplasm in Yunnan Based on SSR Markers