毛柿切接與高接試驗

Graftings of Diospyros discolor Willd.

毛柿嫁接成活過程歷時較長，嫁接後約34個月存活率才達到穩定狀態。以一年生枝條做為接穗，春梢枝條成活率（7.76±2.48%）優於秋梢枝條（1.61±1.17%）。切接試驗台北部份成活率最高在四月（40±11%），次高在十月（20±9%）；恆春部份成活率最高則在三月（45±11%），六月次之（30±10%）。高接成活率最高亦在三月（39.9±4.3），但在六月卻低（4.1±1.7%）。接穗來源間成活率有顯著差異，以水源地者最佳（26.01±3.83%）。砧木間亦存在差異，尤其是雄砧木（25.38±3.41%及17.72±2.99%）有優於雌砧木（16.56±2.91%及11.41±2.495%）的趨勢，且雄砧木嫁接隔年就開花結果。因雄性砧均位於同區，此現象是否由所處環境造成，仍需進一步求證。由於所採接穗皆為側枝，因此嫁接成活後之新生枝條初步觀察均具有一般側枝的惰性生長現象。 Normally, it takes three to four months to reach a stable Survival rate for grafting of Diospyros discolor. In this test, one-year-old shoots were used as grafting scions. The survival rate of spring-shoots (7.76±2.48%) is higher than that of autumnshoots (1.61±1.17%). The highest survival rate of the cut-grafting test in Taipei appeared in April (40±11%), and the next appeared in October (20±9%). The highest survival rate of the cut-grafting test in HengChuen appeared in March (45±11%), and the next appeared in June (30±10%). The highest survival rate of top-grafting in Heng-Chuen appeared also in March (39.9±4.3%), but a very low survival rate appeared in June (4.1±1.7%). Scion-source affects survival rate significantly, and the highest survival-rate scion came from shui-yuan-di (in Heng-Chuen). As source of scions, source of stocks also affect survival rate significantly. Male stocks (25.38±3.41%, 17.72±2.99%) were better than female stocks (16.56±2.91%, 11.41±2.49%), and only male stocks got flowering and fruiting in the next year after grafting. Whether this phenomenon was influenced by environmental factors is not confirmed yet, further studies are needed. The survival grafting scions were topophysis in all observations.