植物生长调节剂对马铃薯块茎淀粉含量及品质的影响

Effects of PGRs on starch content and quality of potato tubers

大田栽培条件下,以马铃薯(Solanum tuberosum L.)荷兰212为材料,叶面喷施不同植物生长调节剂,通过比较块茎中转化酶、淀粉酶活性变化以及蔗糖、淀粉、维生素C等含量变化的差异,研究喷施植物生长调节剂对马铃薯块茎品质的调控效应。结果表明:在块茎生长过程中,2-N,N-二乙氨基乙基己酸酯(DTA-6)对块茎内转化酶活性、维生素C和可溶性蛋白质含量的影响很大,而SOD模拟物(SODM)和氯化胆碱(Cc)处理对块茎生长过程中蔗糖、淀粉含量的调控效应不明显。对于块茎品质而言,SOD模拟物(SODM)显著提高块茎内淀粉和还原糖含量,显著降低酚类物质、可溶性蛋白质以及维生素C含量;氯化胆碱(Cc)显著提高可溶性蛋白质和维生素含量,显著降低淀粉、酚类物质和还原糖含量;DTA-6处理对马铃薯块茎品质影响不大。

Taking a potato（Solanum tuberosum L.）cultivar named Holand-212 as the material,different PGRs（plant growth regulators） were sprayed under the condition of field cultivation to study the regulatory effect of spraying of PGRs on the quality of potato tubers by comparing the activities of invertase and amylase,and the content of sucrose,starch,reduced sugar and vitamin C,etc.The results show that： Diethyl aminoethyl hexanoate（DTA-6） has great influence on the activities of invertase,the content of vitamin C and soluble protein,while the other treatments have mild regulatory effect on potato tubers at the growth period.For the purpose of tuber quality,SOD mimics（SODM） can significantly increase the content of starch and sugar content of tubers,significantly decrease the content of hydroxybenzene,soluble protein and vitamin;Choline chloride（Cc） can significantly increase the content of soluble protein and vitamin,significantly reduce the content of starch,hydroxybenzene and sugar;DTA-6 treatment has little effect on the quality of potato tubers.