Anther development and microsporogenesis of Paeonia rockii CVS Cytogeneticstudy on microspore formativeprocess of Paeonia rockii ‘Spring in Arm’(Paeonia rockii‘Wan Chun’)——An Outstanding Cultivar in the Northwest Rockii Tree Peony Cultivar Group in China Paeonia rockii and Its One New Subspecies from Mt. Taibai, Shaanxi of China STUDIES ON CHROMOSOMES AG-BANDING AND GIEMSA C-BANDING IN VARIETIES OF PAEONIA ROCKII AND PAEONIA SUFFRUTICOSA Life Table Analysis of Population Between Two Allopatric Subspecies of Paeonia rockii Life Table Analysis of Population Between Two Allopatric Subspecies of Paeonia rockii Photosynthetic Characteristics and Its Micro-environmental Limiting Factors of Two Main Oil Peony DNA Molecular Evidences of the Hybrids between Paeonia rockii and Psuffruticosa Based on ISSR Markers RAPD Classification and Identification of Paeonia rockii Varieties Planted in Gansu Province Three New Varieties of Paeonia rockii Hybrids(Flare Tree Peony) Study on development of dormant underground buds of Paeonia rockii under tissue culture condition Genetic Diversity of Paeonia rockii Revealed by ISSRs