关键词: 品种, 彩叶, 生理, 适应性

Abstract: In order to screen suitable color-leaf plants to grow in Tianjin, the 6 kinds of color-leaf plants were regarded as the research objects, including Sophora japonica cv. Golden Stem, Ulmus pumila cv.Jinye and Ailanthus altissima Var. et al. The differences of 6 cultivar's anti-stress physiological indexes were analyzed. The results showed that Ailanthus altissima（0.195%） had the highest soluble sugar, the lowest one was Prunus cerasifera Ehrhar f. （0.11%）; the Ulmus pumila cv.Jinye（13.07 mg/g） had the highest soluble protein, and the lowest one was Prunus×cistena N.E.Hansen ex Koehne（7.135 mg/g）; the Amygdalus persica f.（51.954 μg/g）had the highest free proline, and the lowest one was Prunus×cistena N.E.Hansen ex Koehne（37.9 μg/g）; the Ulmus pumila cv.Jinye（52.38 U/（g·min））had the highest peroxidase activity（POD）, and the lowest one was Prunus×cistena N.E.Hansen ex Koehne（15.012 U/（g·min））; the Sophora japonica cv. Golden Stem（0.499 U/g）had the highest superoxide dismutase, the lowest one was Prunus cerasifera Ehrhar f.（0.341 U/g）; the Prunus×cistena N.E.Hansen ex Koehne（0.027 μmol/g）had the highest malondialdehyde, the lowest one was Ulmus pumila cv.Jinye（0.003 μmol/g）. According to comprehensive analysis of the index membership function, the adaptability of 6 kinds of color-leaf plants could be divided into four categories. One of the best categories included Ulmus pumila cv. Jinye and Sophora japonica cv. Golden Stem; the second category were Amygdalus persica f. and Ailanthus altissima Var; the third category was Prunus cerasifera Ehrhar f.; the last category was Prunus×cistena N.E.Hansen ex Koehne.

Key words: cultivar, color-leaf, physiologica, adaptability