关键词: 骏枣; 生长发育; 激素代谢; 源库

Abstract: Objective To study changes in the relationship of hormone metabolism and their effects on fruit quality during fruit development by applying exogenous plant growth regulators and screen compound plant growth regulators that can improve fruit quality in the hope of providing technical basis for the sustainable development of jujube industry in Xinjiang.Method Three formulations were made from hypersensitive protein, spermidine, salicylic acid and DA-6 to investigate and analyze the effects of spraying on endogenous hormone content, yield and fruit quality during leaf and fruit development of 6-year-old jun jujube.Result The application of exogenous spermidine, salicylic acid and DA-6 compound reagent significantly enhanced the supply capacity of the source leaves and slowed the growth rate of the fruit. In the first rapid growth period of Jujube fruit, the ratio of IAA between the sink and fruit increased by 183.0%, the weight and yield of single fruit increased by 27.69% and 25.18% than those of CK, respectively. The combination of hypersensitive protein or salicylic acid with spermidine and DA-6 significantly increased the content of ZR in the leaves of Jujube from white maturity to maturity, and the ratio of leaf to fruit of ZR was maintained at a high level above 1.37. 30 mg/L DA-6 was one of the core substances to improve the nutrient supply capacity of leaves on junjube in the later stage. Conclusion Spraying 0.25 mmol/L salicylic acid with 0.1 mol/Lspermidine+30 mg/L DA-6 after fruit setting in jujube could solve the problem of fast growth in early stage and insufficient accumulation of dry matter, unfullness of fruit and resistance deficiency in later stage because leaves could not provide sufficient nutrition for fruit in late stage on jun jujube.

Key words: Jun jujube; growth and development; hormone metabolism; source and sink