【摘要】 以红地球葡萄和克瑞森无核葡萄为试材,研究采前使用赤霉素（GA₃）处理对果实采收时的品质及采后贮藏特性的影响,测定贮藏期间果实的腐烂率、落果率、呼吸速率、果实硬度、可溶性固形物含量、可滴定酸含量和丙二醛含量等生理指标。结果表明:采前使用30mg/L GA₃处理可使采收时红地球葡萄和克瑞森无核葡萄果实单粒质量分别提高29.33%和32.30%,平均单穗质量分别增加49.71%和33.36%,在果实冷藏期间,能有效控制葡萄的腐烂和落粒,显著抑制红地球葡萄和克瑞森无核葡萄果实在贮藏过程中的呼吸速率,有效地维持果实硬度,减少可滴定酸的下降幅度,保持葡萄的营养成分,延缓果实丙二醛的生成,保持细胞膜的完整性。更多还原

【Abstract】 ’Redglobe’ and ’Crimson Seedless’ grapes（Vitis vinifera） were used to explore the effect of preharvest gibberellic acid（GA₃） treatment on postharvest quality and storage physiology of grape fruits.Respiration intensity,firmness,titratable acid content,soluble solid content,decay rate,drop rate and MDA content were measured on grape fruits stored at 0℃.The results showed that preharvest 30 m/L GA₃ treatment could increase single berry weight by 29.33%and 32.30%,and average single cluster weight by 49.71%and 33.36%for ’Redglobe’ and ’Crimson Seedless’ grapes,respectively.Moreover,the GA3 treatment could also effectively lower fruit decay rate and drop rate,notably inhibit respiration intensity,maintain fruit firmness and nutrients,reduce the decrease of titratable acid content,delay the generation of MDA,and preserve the completeness of the cell membrane.更多还原