GA_3对轮台白杏坐果及果实品质的影响

Effects of GA_3 on Fruit Setting and Fruit Quality of Luntai Amerniaca Vulgaris

【目的】研究不同浓度赤霉素(GA_3)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GA_3,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】GA_3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 GA_3处理后,果实膨大的效果与GA_3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GA_3处理能显著提高产量,可运用于轮台白杏生长发育的调控。

[ Objective] To explore the effects of different concentrations of GA3 on Luntai Arnerniaca Vulgaris fruit setting and quality and lay the foundation for the cultivation and regulation of Luntai Arnerniaca Vul- garis 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 treat- ment 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 enlarge- ment 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.