| 摘要: | 本試驗目的為探討鏈黴素及激勃素應用於茂谷柑少子化之效果及對茂谷柑果實發育與品質之影響。試驗於新竹縣寶山鄉果園進行，以16年生茂谷柑為試驗材料，於茂谷柑開花前與盛花期噴施不同濃度鏈黴素及激勃素等組合7種，以不處理為對照。試驗結果顯示，種子數以鏈黴素500 ppm配合激勃素300 ppm處理之種子數最少，平均種子數為5.5顆，對照處理之種子數13.3顆最多，處理間差異達5%顯著水準，顯示該處理可有效降低茂谷柑果實的種子數。於開花後4週，果高和果徑均呈直線生長；自開花後33－37週，果高及果徑發育則趨於平緩。各處理間著果率為39.3－50.8%，可溶性固形物含量為12.5－12.8°Brix，酸度含量為0.75－0.80%，處理間差異未達顯著水準。
The experiment was carried out with 16 year old Murcott to evaluate the effects of streptomycin and gibberellins on seedless, fruit development and quality of Murcott in Baoshan village, Hsinchu County. Seven combinations of streptomycin and gibberellins in different concentrations were treated at pre-flowering and full-flowering stage. The results showed that average number of seed in the fruits sprayed by streptomycin 500ppm combined with gibberellins 300ppm was 5.5 seeds whereas 13.3 in those of control. Both were significantly different at 5% probability level. This experiment showed streptomycin 500ppm combined with gibberellins 300ppm sprayed pre-flowering and full-flowering stage could reduce the Murcott fruit seeds effectively. The fruit diameter and fruit height showed linear growth at 4 week after flowering, and flat growth during 33-37 weeks after flowering. The percentage of fruit setting with the range of 39.3-50.8%, total soluble solids content with the range of 12.5-12.8°Brix, and acidity content with the range of 0.75-0.80% were not significantly different among the treatments. |
