ريزافزايي ارقام ايراني توسفيد و توسرخ گواوا

MICROPROPAGATION OF IRANIAN CULTIVARS OF WHITE FLESH AND RED FLESH OF GUAVA (PSIDIUM GUAJAVA L.)

In this investigtion, proliferation of shoots from seedling nodal sections of two guava cultivars namely `Local Iʹ from white-fleshed types and `Local 2ʹ from red-fleshed types was attempted. After surface sterilization. the explants were cultured on Murashige and Skoog medium (MS) with 0, 0.25 . 0.50, 0.75, 1.00. 1.2.5, 1.5 and 2.0 mg 1^-1 BA and 0 and 0.25 mg 1 ^-1 NAA and their combinations as well as Barba and Patella (BP) medium with 0 and 1.5 mg 1.1 BA. Generally, with increasing BA up to 1.5 mg 1^-1 the average shoot number was increased, but the shoot length decreased. The best shoot proliferation (5 shoots per explant) was obtained in `Local-1ʹ with 1.25 mg l^-1 BA and 0.25 mg 1^-1 NAA, while increasing NAA in the medium was ineffective for `Local 2ʹ. In comparison. MS was superior to BA medium. The best treatment for rooting was 0.5 g Ft IAA in MS medium which resulted in 4.75 roots per explant.