不同类型土壤上种植的小麦籽粒中与淀粉合成相关的酶活性变化

测定池栽条件下灰潮土、水稻土、砂姜黑土上种植的强筋小麦‘郑麦9023’籽粒灌浆过程中腺苷二磷酸葡萄糖焦磷酸化酶（AGPP）、尿苷二磷酸葡萄糖焦磷酸化酶（UGPP）、可溶性淀粉合成酶（SSS）、淀粉粒结合淀粉合成酶（GBSS）、淀粉分支酶（SBE）5个与淀粉合成有关的酶活性变化的结果表明，不同类型土壤上种植的小麦籽粒中AGPP、UGPP、SSS、GBSS、SBE活性均呈单峰曲线变化，花后18d，AGPP、UGPP、SSS和SBE活性达到峰值，而GBSS则在花后24d达到峰值。AGPP、SSS、SBE活性峰值表现为灰潮土〉水稻土〉砂姜黑土，UGPP峰值表现为灰潮土〉砂姜黑土〉水稻土，GBSS峰值则表现为水稻土〉灰潮土〉砂姜黑土。

Changes in Activities of Enzymes Involved in the Starch Synthesis in the Kernel of Wheat (Triticum aestivum L.) in the Different Soil Types

Changes in activities of five enzymes ADP-glucose pyrophosphorylase (AGPP),UDP-glucose pyrophosphorylase (UGPP),soluble starch synthase (SSS),granule-bound starch synthase (GBSS) and starch branching enzyme (SBE) involved in starch synthesis were studied during grain filling of strong gluten wheat (Triticum aestivum L.) cultivar 'ZM 9023' in the three different soil types (gray damp soil,rice soil and Shajiang black soil) on the condition of pond culture.The results indicated that the changes in five enzyme activities all came to be a single-peak curve,the peaks of AGPP,UGPP,SSS and SBE appeared after anthesis for 18 d,but the peak of GBSS appeared after anthesis for 24 d.The peaks of AGPP,SSS and SBE showed that gray damp soil>rice soil>Shajiang black soil,the peak of UGPP showed that gray damp soil>Shajiang black soil>rice soil,but the peak of GBSS indicated that rice soil>gray damp soil>Shajiang black soil.