利用矮化砧木是柑桔矮化栽培的主要途径之一.但柑桔矮化砧木的选育工作进展较缓慢,其原因之一就是缺乏合适的早期预选指标。叶片气孔密反、枝条电阻大小、枝皮率、根皮率、1年生枝木质部导管大小与密度、叶片栅栏组织与海绵组织的比值、枝条节间长度、吲哚乙酸氧化酶活性等皆已作 The use of dwarfing rootstocks is one of the main ways of dwarfing citrus cultivation, but the dwarfing of citrus dwarfing rootstocks is progressing slowly, one of the reasons is the lack of suitable early pre-selection indicators. Leaf stomatal density, branch resistance, shoot bark rate, root bark rate, 1-year-old branches xylem size and density, leaf palisade and sponge tissue ratio, length of shoots, indoleacetic acid oxidase activity