Ethrel及Gibberellin對荔枝果實發育及成熟之影響

Effect of Ethrel and Gibberellin on Fruit Development and Maturation of Lychee (Litchi chinensis Sonn.)

各種濃度之Ethrel在荔枝採收前處理果實均有促進成熟，提高產量及增進品質之效果，其中以120ppm之效果最佳，而處理之時期以採收前二個星期左右最為適宜。GA對荔枝在果實發育後期處理時，稍有抑制成熟作用，處理後且常有擬似藥害現象之黑斑產生。

Various concentrations of Ethrel were sprayed on Lychee (Litchi chinensis Sonn.) fruit which hastened fruit maturity, increased yield and improved fruit quality. The best concentration was 120ppm and applied two weeks prior to harvest. GA application at late stage was found to retard fruit maturity and cause some residue-like damage.