【摘要】 【目的】通过外援复配新型植物生长调节剂的应用,研究骏枣果实发育过程中内源激素的变化关系及对果实品质的影响,筛选可改善果实品质的复合型植物生长调节剂,为新疆红枣产业的可持续发展提供技术依据。【方法】选用6 a生密植骏枣为对象,以超敏蛋白、亚精胺、水杨酸、DA-6为材料进行复配3个配方,调查分析喷施对叶片与果实发育过程中内源激素含量、产量和果实品质的影响。【结果】通过外援亚精胺、水杨酸和DA-6复混试剂的应用,显著增强源叶的供应能力,减缓了库果的生长速度。在骏枣果实第一次快速生长期源叶、库果之间的IAA比值较对照提高了183.0%,单果重和产量分别较CK提高了27.69%和25.18%。超敏蛋白或水杨酸与亚精胺和DA-6的组合均显著提高了骏枣叶片从白熟到成熟期ZR的含量,ZR的叶果比能持续维持在1.37以上的高水平。30 mg/L的DA-6是提升骏枣叶片后期营养供应能力的核心物质之一。【结论】在枣树坐果后喷施0.25 mmol/L水杨酸与0.1 mmol/L亚精胺和30 mg/L DA-6的混合试剂,可解决骏枣因前期生长过快,后期营养不足致使干物质积累不够,果实不饱满、抗性不足的问题。更多还原

【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.更多还原