加工番茄機械化栽培之研究（一）益收生長素對加工番茄成熟期之影響

Studies on the Mechanized Cultivation of Processing Tomato (I)Effect of Ethephon Concentrations on Ripening of Processing Tomato

兩品種加工番茄TM 103及Peto 86於採收前施用不同濃度之益收生長素，兩品種分別於處理後16天及21天進行第一次採收。益收生長素處理顯著提高TM 103及Peto 86兩加工番茄品種第一次採收之紅熟果產量，隨250、500、1000及2000 ppm之處理濃度增加而呈直線增加。第一次採收二週後進行第二次採收，第二次採收之紅熟果產量於處理間無顯著差異，但益收生長素處理顯著降低綠熟果產量。益收生長素處理較對照組平均可增加總產量12.5%之紅熟果，但果實總產量則不影響。益收生長素處理對第一次採收之果實大小並無影響，但降低第二次採收之果實大小。加工品質則不受益收生長素處理之影響。依經濟評估以處理1000 ppm益收生長素為宜。

Two processing tomato, TM 103 and peto 86, were treated with different rates of ethephon 16 days and 21 days before the first harvest. Ethephon treatment significantly increased the ripen fruit yield of the first harvest. Treated with ethephon concentrations of 250, 500, 1000 and 2000 ppm showed a linear increased in yield. Ethephon treatment did not increase the ripen fruit yield in the second harvest which harvested 14 days later after first harvest, but the green fruit yield was reduced. Ethephon treatment had 12.5% increase of ripen fruit compared to control (no ethephon treatment), but there was no difference in total yield. Ethephon did not affect the ripen fruit size in the first harvest, however, the ripen fruit size was significantly reduced in the second harvest. Fruit processing quality is not affected by ethephon. The optimum concentration for the two cultivars was 1000 ppm.