EFFECT OF DIFFERENT CONCENTRATIONS OF INDOLE BUTYRIC ACID (IBA) AND AGE OF SHOOT ON AIR LAYERING OF MANGO (Mangifera indica Linn.)
Safina Naz and Muhammad AslamUniversity College of Agriculture, Bahauddin Zakariya University, Multan.
Abstract: The experiment was conducted at Faiz-e-Chamman Mango Orchard, Khanewal Road, Multan. The research was conducted to standardize the method of air layering in mango under climatic conditions of Multan. Different concentrations of IBA, 1000, 2000, 3000, 4000, 5000ppm and control (0.000ppm), were applied on one, two and three years old shoots of mango variety- Sindhri. The data were collected on number of roots and length of roots. The results showed maximum number of roots in two years old shoot treated with IBA concentration @ 2000ppm, whereas one year old shoot failed to produce roots with the application of different concentrations of IBA except 2000ppm IBA concentration. There were no significant differences in length of roots among shoots treated with IBA concentrations of 1000, 2000, 3000ppm and control, which produced maximum length of roots. Shoots treated with IBA concentration of 5000ppm resulted in minimum length of roots.
Keywords: Age of shoot, air layering, indole butyric acid (IBA), mango (Mangifera indica Linn.), number and length of roots.