Guava (Psidium guajava L.) is vital commercial fruit in tropics and subtropics as a result of its dietary price and huge adaptability to various soil and climatic stipulations. Unfortunately, guava does now not lend itself easily to the various asexual propagation methods. The best method of its business propagation is through seed and it is for this reason that the standardization of its cultivars has now not been conceivable.
Horticulturists in the subcontinent have attempted other asexual strategies for its propagation, also the use of plant expansion regulators with limited good fortune. Therefore, at NARC, the scientists started work on its vegetative propagation.
Although guava is difficult to root, our investigations (1988-2003) indicate that it can be successfully propagated axesually. The use of stem cuttings is considered to be the least expensive method for vegetative propagation. Therefore, several types of cuttings during other seasons of the yr, using different root promoting plant expansion regulators and rooting media underneath mist in the greenhouse have been attempted.
On the basis of our analysis findings, native selections were produced from guava rising spaces of Punjab, Khyber Pakhtunkhwa and Sindh retaining in view size, colour, form, seed to pulp ratio, style and yield. True-to-type plants of selected cultivars and training in propagation was also provided to the nurserymen of Pattoki and Sharqpur (Punjab), Kohat (Khyber Pakhtunkhwa) and Larkana (Sindh). A clonal orchard (10 acres) of native and exotic cultivars was once established at Sharqpur (Punjab).
Now a commercial nurseryman has set a clonal guava nursery in that space as neatly. This success will result in the status quo of true-to-type orchards of guava yielding top of the range fruit for recent consumption and processing business.
Shoot-tip cuttings (10-15 cm long with 4 leaves) of current season expansion treated with 12 ppm solution of Paclobutrazol (ICI Pakistan) gave 90% rooting after 6 weeks when planted in coarse sand media beneath mist within the greenhouse with 80-85% relative humidity and 25-30 oC temperature, and natural day period all through July-August. Similar results had been acquired when 4000 ppm IBA was used maintaining the entire other stipulations constant. Rooted cuttings are later shifted in polythene tubes containing a media mixture of soil, silt and neatly rotten manure in equivalent amounts and kept within the greenhouse for acclimatization.