Effect of Paclobutrazol Concentrations and Dipping Period on Rooting of Soft Wood Cuttings of Guava (Psidium guajava)
Abstract: Effect of different concentrations of Paclobutrazol and dipping period on rooting of softwood cutting of Guava was studied at Ornamental Nursery, NWFP Agricultural University, Peshawar. Fresh softwood cuttings of Guava having 3-4 leaves were dipped in 0, 10, 20, 30, 40, 50 and 60 ppm solution of Paclobutrazol for 1, 2, 3, 4 and 5 h and were planted in plastic tubes and covered with polythene sheet for maintaining humidity. In various Paclobutrazol concentration 60 ppm resulted in maximum cutting success (73.3%), rooting (69.5%), shoot length (24.3 cm), number of branches (4.3), number of roots (87.1) and root volume per plant (1.64 cm3). In various dipping period five hours dipping resulted in maximum cutting success (34.9%), rooting (30.1%), shoot length (10.6 cm) and number of roots (47.2) while four hours dipping resulted in maximum number of branches (2.6) and root volume per plant (1.05 cm3). In interaction maximum cutting success (81.7%), shoot length (28.8 cm)and number of branches (5.3) was observed in 60 ppm Paclobutrazol concentration and 2 h dipping. 60 ppm Paclobutrazol concentration and 3 h dipping period gave maximum rooting (80%), number of roots (102.7) and root volume per plant (1.76 cm3).
Effect of Paclobutrazol Concentrations and Dipping Period on Rooting of Soft Wood Cuttings of Guava (Psidium guajava). Pakistan Journal of Biological Sciences, 7: 28-31.