Studies On Collection And Utilization Of Ornamental Citrus

1. There are many kinds in citrus group, and parts of them are suit to as ornamental plants. The characteristics of biology and ornament are introduced aboutFortunella margarita (Lour.) Swing., F. crassifolia Swingle, Citrus madurensis Lour; C. mitis Blanco, F. obovata Tan., C. sinensis (L.) Osbeck , C. limon (L.) Burm, C. medica var. sarcodactylis (Noot. ) Swing.) and P. trifoliate var. monstrosa(T. Ito) Swing..2. The affinities of graft are high between Poncirus Raf. and all kinds of the materials involved in last except P. trifoliate var. monstrosa(T. Ito) Swing.. All the rates of survive beyond 60 %, and the highest ones are C. sinensis (L.) Osbeck and F. obovata Tan. They are separate 93.10% 和 94.87%. The following are C. medica var. sarcodactylis (Noot. ) Swing and C. limon (L.) Burm., and their rates are between 84.78 % ~75.11 % ; The lowest ones are F. crassifolia Swingle and Fortunella margarita (Lour.) Swing.. Their rates are 60.56 % and 67.98 %, and the growing way of all kinds are all right, so the better generation way of those ornamental citru is graftwith Poncirus Raf. as rootstock..3. Effect of low temperature stress on CAT activation and water potential was studied in ornamental orange. The result shows: When coercing, cell total water content reduce and relative to increase amount of fetters water in slight low temperature, helping plants to resist cold enhancement, CAT activation and water potential of ornamental citru are on the rise. But when reach the critical point of freeze injury. CAT activation and water potential rise to the peak. Thereafter, Because the low temperature makes the cell membrane damaged, CAT activation and water potential which ornamental citru drop irreversibly, degree that drop its can reflect which ornamental orange every cold-resistant size of strength of variety.4. Among the patterns of utilization, the ornamental effect of potted-plant way is better than the way planted in the earth., at the same time , the plant way of line is better than the patch..5. As to Longevty kumquat(F.obvata), florescence is living June the first ten-day of a month the fruits be able to be living 10 middle of the month last ten-day period of a month becomes mature. By means of specified the growing together with regulates and control the measure of this two lotes fruits is leaveed each other and be able to be meeied National Day and the spring festival marketplace necessaries.