Studies on Agrobacterium-mediated Transformation of Rose Callus with SeNHX1 Gene Essence Constituents of Rosa chinensis Flower Transformation of Tobacco with Rchsp1718 from Chinese Rose EnhancesTolerance to Different Abiotic Stresses Chemical constituents from flowers of Rosa chinensis Ecological effects of short-time increased air temperature in Summer and Autumn periods on dark respirations and typical photosynthetic characteristics for Rosa chinensis in Beijing urban areas Transformation of Tobacco with Rchsp1718 from Chinese Rose EnhancesTolerance to Different Abiotic Stresses Chemical constituents from flowers of Rosa chinensis