Comparative study on <i>Pseudaulacaspis pentagona</i> resistance of four different cultivars of kiwifruit

Kiwifruit is a common and popular fruit around the world. However, white peach scale (Pseudaulacaspis pentagona [Targioni-Tozzetti]), insect with wide range of hosts, seriously affects yield quality kiwifruit. To investigate differences in resistance different kiwifruit cultivars to P. pentagona, cellular structure gene expression assays were used explain mechanism. Based on stability infestation rate, we selected four from 50 kiwifruits for in-depth study, including ‘LC-04285’, ‘CF-3’, ‘DA-7B’ ‘Hayward’. The anatomical canes analysis revealed that resistant cultivar ‘LC-04285’ had thicker cuticle, denser epidermis cortex. levels genes related cuticle synthesis formation cortex also higher ‘LC-04285’. Further investigation Jasmonic acid (JA) receptors COI1 highly expressed AcJAZs susceptible Besides, AcICS, AcPAL4, AcPAL5 AcNPRs, which involved salicylic (SA) SA response, Our results preliminarily mechanism at molecular levels. This study provided useful guidance breeding insect-resistant future.