Effects of leaf application of organic selenium fertilizer on sucrose metabolism and fruit quality of peach
[Objective]To find the best selenium enrichment scheme of organic selenium fertilizer in peach fruit leaves.[Meth-ods]Peach variety'Jinmi No.4'was used as experimental material,and the organic selenium fertilizer concentration gradients of 0 mg/L,30 mg/L,60 mg/L,90 mg/L and 120 mg/L were set,and the leaves were sprayed three times during the fruit ex-pansion stage.Selenium content,single fruit mass,fruit shape index,fruit hardness,soluble solid,titrable acid,sugar-acidra-tio,vitamin C content,sucrose synthetase activity,sucrose phosphate synthetase activity,acid invertase activity,neutral in-vertase activity of peach fruit were determined.[Results]After organic selenium fertilizer was applied to leaves,the fruit weight,fruit hardness and soluble solid content of peach fruit were significantly increased.But the vitamin C content was lower than that of the control group.The activities of SS and AI were increased,while the activities of SPS and NI were decreased.[Conclusion]The comprehensive test results show that organic selenium fertilizer treatment can effectively increase the seleni-um content of peach fruit and improve the comprehensive quality of peach fruit.
万方数据
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