Under MPF treatment, the root RVA parameters of Pv, Ht, Fv, Sb, and PT were significantly lower than those under the control treatment in Jishu 18, while Pv, Ht, and Bd were higher in Aya. With MPF, the amylose content was high.er in Jishu 18, and the amylopectin content was enhanced in Aya