赤霉素喷施对红灯甜樱桃果实品质及解剖结构的影响

研究红灯甜樱桃生长期喷施不同浓度(20、60、100 mg·L^-1)赤霉素(GA₃)对果实品质及解剖结构的影响。结果表明,60 mg·L^-1的GA₃处理增加了单果重与纵径。不同浓度GA₃处理对果实横径无显著影响,但降低了果实硬度、可溶性糖、维生素C和可溶性固形物含量,升高了可滴定酸含量,致果实品质总体下降。解剖结构结果表明,GA₃喷施浓度越大,果实角质层与表皮厚度越薄,果肉细胞与表皮细胞越大,硬度越小。建议在生产中减少GA₃的使用,尤其是高浓度(100 mg·L^-1)的GA₃喷施对果实不利。

Effect of gibberellin on fruit quality and anatomical structure of Hongdeng sweet cherry

In the present study, the effect of gibberellin (GA₃) on fruit quality and anatomical structure of Hongdeng sweet cherry was explored. It was shown that application of 60 mg·L^-1 GA₃ increased single fruit weight and longitudinal diameter. Application of GA₃ had no significant effect on fruit diameter, decreased the firmness of fruit, contents of soluble sugar, vitamin c and soluble solid, yet increased titratable acid content, which led to the overall decline in fruit quality. Anatomical structure analysis showed that with the increased concentration of GA₃, the thickness of cuticle and epidermis and firmness of fruit decreased, yet the size of flesh cells and epidermal cells become larger. It was suggested that the application of GA₃ should be reduced in production, especially for the application with high concentration (100 mg·L^-1).