Abstract: [Objective] To explore the effects of different concentrations of GA3 on Luntai Amerniaca Vulgaris fruit setting and quality and lay the foundation for the cultivation and regulation of Luntai Amerniaca Vulgaris fruit.[Method]Taking Luntai Amerniaca Vulgaris as the research object, 40 mg/L, 90 mg/L and 140 mg/L concentrations of GA3 were sprayed at full flowering stage and 20 d after anthesis.The fruit setting rate was analyzed 20 d after flowering, fruit vertical diameter, transverse diameter, lateral diameter and single fruit weight were measured regularly, the fruit quality was determined after the fruit ripening.[Result]GA3 treatment significantly increased the fruit setting rate, and the fruit vertical, horizontal and lateral size effectively, but the quality of the fruit has been reduced.90 mg/L GA3 significantly increased the fruit set, an increase of 117.32; compared to the CK.After the treatment of 40 mg/L and 90 mg/L GA3, the effect of fruit enlargement was positively correlated with the concentration of GA3.When the concentration reached 140 mg/L, the phenomenon of fruit enlargement was not obvious.[Conclusion]The 90mg/L concentration of GA3 could effectively improve the yield of fruit, which could be used to control the growth and development of Luntai Amerniaca Vulgaris.

摘要： [目的]研究不同浓度赤霉素(GA3)处理对轮台白杏坐果率及品质的影响,为杏果实调控奠定基础.[方法]以轮台白杏为研究对象,在盛花期和花后20 d分别喷施40、90和140 mg/L浓度的GA3,在花后20 d统计坐果率,定期测定果实纵径、横径、侧径及单果重,果实成熟后测定果实品质.[结果]GA3处理后均能有效提高果实坐果率,同时能有效促进果实纵径、横径、侧径的增大,但果实的品质有所降低.90 mg/L处理对提高轮台白杏的坐果率效果最明显,与对照相比,坐果率提高了117.32;,在40和90 mg/L GA3处理后,果实膨大的效果与GA3浓度成正相关,当浓度达到140 mg/L时,果实膨大现象不明显.[结论]90 mg/L浓度GA3处理能显著提高产量,可运用于轮台白杏生长发育的调控.