不同插穗來源對茶樹扦插成活之影響

茶樹相關的扦插繁殖試驗甚多，但並無比較不同來源茶樹枝條之扦插報告，本研究有鑑於此，以臺灣目前栽培品種最多之青心烏龍及台茶十二號採自不同來源之插穗為材料，探討栽植於不同來源之茶樹即取廬山(海拔1400m)、魚池(海拔950m)及竹山(海拔220m)三地區插穗對茶樹扦插繁殖之影響，提供茶樹扦插繁殖母穗留養之參考。 試驗結果顯示，無土介質扦插三地區插穗均以台茶十二號生育表現明顯優於青心烏龍。就土壤袋插之茶樹扦插苗生育而言，台茶十二號以竹山地區的插穗長的最好，其次為魚池地區，廬山地區長的最差;青心烏龍則以廬山及竹山之插穗長的最好，魚池地區長的較差，不同來源之合茶十二號扦插一年之成苗率以竹山(99.6%)＞魚池(98.2%)＞廬山(44.2%)；青心烏龍以廬山(99.6%)＞竹山(98.9%)＞魚池(87.7%)。在土壤扦插整體表現上，以竹山所取的插穗(台茶十二號和青心烏龍)生長最佳。其次為廬山的青心烏龍及魚池插穗(台茶十二號和青心烏龍)，廬山地區的台茶十二號生長最差扦插成活率及成苗率最低僅63.8%及44.2%。由扦插苗之生育狀況所得到的結論是:青心烏龍不同插穗來源對其成活率及扦插苗生育影響不大，反而受扦插介質影響較大，青心烏龍較適用土壤扦插。台茶十二號對扦插介質的適應性較廣以竹山、魚池插穗生長較好，但仍以土壤扦插成活率較高。總而言之，慎重選擇茶樹品種，加強母樹園管理及妥善照顧扦插苗是扦插成功之不二法門，不同插穗來源非影響茶樹扦插成活之主要因子。Cuttings of two tea cultivars(Chin-Shin Oolong tea and TTES No. 12 tea) collected from three altitudes(Lu-Shan 1400m, Yu-Chin 950m and Ju-Shan 220m) were propagated at experiment station(770m) to study the effect of elevation to the rooting and plant growth in the nursery. The results show that survival rate of TTES No. 12 are 99.6% from Ju-Shan,98.2% from Yu-Chin, and 44.2% from Lu-Shan, respectively. On the contrary, Chin-Shin Oolong cuttings from Lu-Shan had the result with 99.6%, 98.9% from Ju-Shan, and 87.7% from Yu-Chin. There is no significant difference among altitudes. The medium in the nursery with cleaned clay is better than other soilless medium