Foliar application of potassium nitrate and 2,4-dichlorophenoxyacetic acid affect some fruit splitting related characteristics and biochemical traits of mandarin cv. ‘page’

摘要: Fruit splitting and quality are the most values in mandarin cv. ‘Page’ since they playing main role production exporting potential. Therefore, this study was carried out to evaluated foliar application of KNO3 (0, 1 2%) 2,4-dichlorophenoxyacetic acid (2,4-D, 0, 50 100 mg/L) at three stages (full bloom, end petal fall, June drop) during two growing seasons (2016 2017) on some fruit related characteristics biochemical traits ‘Page’. Foliar 2,4-D treatment significantly reduced severity, peel firmness SSC/TA ratio, but enhanced size, β-galactosidase PG activity, SSC, TA, vitamin C, TPC, TAC as compared with control. A negative correlation revealed between activity severity. Moreover, a synergistic effect treatments found treated fruits highest content obtained 2% + mg/L treatment. Overall, it is proposed that trees could be more suitable reduce improve quality.