Foliar Application of Brassinolide Induced Regulation of Grain Yield and Quality, Antioxidant Responses and Aroma in Fragrant Rice

Brassinolide (BR) is a new green plant growth regulator. The present field study was conducted on two fragrant rice cultivars (i.e., Meixiangzhan-2 and Xiangyaxiangzhan) to the effects of foliar application BR performance. At heading stage, solutions at 0.05, 0.15, 0.25 0.50 mg L-1 were sprayed 600 liters per hectare; these treatments named as BR1, BR2, BR3 BR4, respectively. treatment with distilled water taken control (CK). Compared CK, BR2 significantly enhanced chlorophyll concentration net photosynthetic rate for Meixiangzhan-2, Xiangyaxiangzhan. BR4 increased concentrations a, b carotenoid, also by 31.91% 40.43%, Higher grain yields recorded in than CK while Xiangyaxiangzhan, yield compared CK. In relation higher head rates (BR2 activities GPX, SOD CAT 10.22% 23.00%, reduced malonaldehyde concentration. addition, we observed that some decreased 2-acetyl-1-pyrroline rice.