外源油菜素内酯对酿酒葡萄“美乐”果实品质的影响

Effect of Exogenous Brassinolide on Fruit Quality of Wine Grape"Merlot"

以酿酒葡萄“美乐”为试材,于葡萄转色期前整株喷施质量浓度为0.2、0.4、0.6 mg·L^(-1)的外源油菜素内酯(EBR),以喷施蒸馏水为对照,研究不同质量浓度EBR对果实品质的影响。结果表明:在花后60~70 d,0.2、0.4、0.6mg·L^(-1)的EBR处理均提升了果实纵径、横径及百粒重,其中0.6mg·L^(-1)EBR处理的百粒重分别是对照的1.06倍和1.16倍;不同质量浓度EBR处理均提高了总糖、蔗糖和还原糖含量,花后80~110 d,0.6 mg·L^(-1)处理总糖含量高于其他处理。综上所述,外源喷施EBR能够促进浆果成熟,提高果实品质,以0.6 mg·L^(-1)EBR处理效果为最佳。

Exogenous brassinolide(EBR)with concentrations of 0.2,0.4 and 0.6 mg·L^(-1)were sprayed on the whole plant of wine grape"merlot"before the color transformation stage to study the effects of different mass concentrations of EBR on fruit quality with distilled water spray as control.The results showed as follows:At 60~70 days after flowering,0.2,0.4 and 0.6 mg·L^(-1)EBR treatments all increased the longitudinal diameter,transverse diameter and 100 grain weight of fruit,and the 100 grain weights of 0.6 mg·L^(-1)EBR treatments at 60,70 days after flowering was 1.06 times and 1.16 times that of control,respectively.The contents of total sugar,sucrose and reducing sugar were all increased by EBR treatments with different mass concentrations.The content of total sugar in 0.6 mg·L^(-1)treatment was higher than those in other treatments 80 to 110 days after floweing.In summary,EBR application can promote berry ripening and improve fruit quality,and 0.6 mg·L^(-1)EBR treatment has the best effect.