在嘉義及雲林的三個試區進行茂谷柑之八種砧木試驗,調查植株生長、產量與果實品質至定植後第六或第七年。生育正常植株之產量以廣東檸檬及粗皮檸檬較高,枳殼及Swingle枳柚中等,酸橘及酸橙較低。果實品質在三個試區的表現甚相近,砧木间的主要差異爲可溶性固形物及含酸量,根殼及其雜交種Troyer枳橙、Swingle枳柚之可溶性固形物及含酸量較高,酸橘及酸橙中等,雜交柚、廣東檸檬及粗皮檸檬最低。嘉義試區疫病與黃龍病發生嚴重,是影響植株生長與產量的主要因素,前者以酸橘及Troyer枳橙、後者以Swingle枳柚之感染率較高,是導致產量低的原因。
In order to evaluated the effects of different species of rootstocks on fruit production of 'Murcott' tangor. Scions of 'Murcott' tangor were grafted on one year old seedlings of eight species of rootstocks and planted in the Chia-Yi Agricultural Experiment Station and two sites at Gu-Keng, Yunlin County. Tree growth, yield and fruit quality were investigated at the sixth and seventh year after transplanting. Accumulated yields of healthy plants were high on rough lemon and 'Rangpur' lime, intermediate on trifoliate, 'Swingle' citrumelo and 'Troyer' citrange, low on sour orange and Sunki. The fruit qualities were similar among most combination of the 'Murcott' tangor and rootstocks species. Total soluble solids and acid contents were high from 'Murcott' tangor grafted on trifoliate, 'Swingle' citrumelo and 'Troyer' citrange, intermediate on Sunki and sour orange, and low on 'Rangpur' lime and rough lemon. In Chia-Yi Agricultural Experiment Station low yield of 'Murcott' tangor on 'Swingle' was resulted from infection with Huanglongbing, whereas low yield on Sunki and 'Troyer' citrange was due to Phytophthora foot or root rot.