| The experiment was conducted in the viewing and admiring fruit trees station of Shangdong Agricultrue University from 2003 to 2004. The materials of the experiment were Prunus persica Bastsch. var.dupelex Sieb.et Zucc.; Prunus cerasifera var. atropurpurea Jacg.; Prunus×bliriana 'Meirenmdi; Prunus×Cistena 'Pissardii'and Prunus persica compressa. The mainly purpose of the experiment was to detect the characterics of anthocyanin in the leaves and its photosynthetic level. The chief results was followed : 1. Through different comparison the optimum extraction conditions of crude anthocyanins from the materials was established: 0.1%HCL-MOH. The expiration was relatively pure and highly concentrated. 2. The anthocyanins were seperated ,purified and identified by paper and spectral chromatography . The mainly type of anthocyanin in the leaves of the four plants is cyanidin. 3. Using the UV—7450 Visible Spectrophotometer to determine the dynamic change of the pigments in the leaves and the results indicate that in spring and autumn, the content of anthocyanin is higher and at this time the effect of viewing and admiring is better. On the other hand in summer the anthocyanin concent is relatively lower. 4. Spraying 0.2%KH2PO4,0.2% citric acid,300 times 934 can improve the content of the anthocyanin and chlorophyll, 0.2%KH2PO4 is the best of the three treatments which can improve the anthocyanin content 20%60% . The experiment of detecting the stability of the pigments under different light condition and in different metal ions solution, including Na+,Mg+,Cu2+,K+,... |
