DEVELOPMENT AND SURVIVAL OF Bactrocera correcta (Bezzi) (DIPTERA : TEPHRITIDAE) ON SELECTED GUAVA CULTIVARS

S. MD. JALALUDDIN, S. SADAKATHULLA

Abstract


Effect of guava cultivars Ac 10, Chittidar; Lucknow 46 and Lucknow 49 on larval  survival, adult eclosion and size of Bactrocera mrrecra were investigated. There was significant  variation in larval and pupal periods but no significant difference in pupation rates. The per cent  adult emergence from puparia \vas found higher (90.6%) on Chittidar (susceptible) and lower  (59.0%) on Lucknow-46 (resistant). C/ritlidar yielded the largest adult (>2.l7 mm head width).  High Vitamin C, total soluble solids and total phenol in fruits were factors contributing to  resistance.


Keywords


Bactrocera correcta; Guava; host plant resistance; Psidium guajava.

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