Fig. 1

A-B Physical appearance of inflorescence of CK (A) and GA₃-treated papaya (Carica papaya L. cv. Zhonghuang) (B). C, D Root system of CK (C) and GA₃-treated papaya (D). Bar=20cm in (C) and (D). E The root biomass, total length and root surface area of CK and GA₃-treated papaya. F The total first order, second order and third order lateral roots of CK and GA3-treated papaya