A New Iris germanica Cultivar‘Huangjinjia’ A New Iris germanica Cultivar‘Huanwu’ Comparison of Cold Tolerance Within 6 Cultivars of Iris germanica Physiological-ecological responses of Iris germanica L. to Cd stress and its accumulation of Cd Comparison of Cold Tolerance Within 6 Cultivars of Iris germanica A New Iris germanica Cultivar‘Huangjinjia’ Morphological Studies and Changes of Two Metabolites Content During Floral Bud Differentiation Period in Iris germanica cv. Lovely Again A New Iris germanica Cultivar‘Huanwu’ Chemical constituents from rhizomes of Iris germanica Effects of Different Photoperiods on Flower Bud Differentiation and Photosynthesis in Iris germanica 'Royal touch' Effects of 6-BA Application on Promotion of offset formation in Iris germanica Effects of 6-BA Application on Promotion of offset formation in Iris germanica