• M. Gayathiri
• S. Madhavan
• S. Vijayaraj

An experiment was carried out to study the influence of plant growth regulators on rooting of hardwood cuttings in guava (Psidium guajava.L) cv. Lucknow-49. The treatments comprised of using three growth regulators like IBA, IAA and NAA with four different concentrations of 1000, 2000, 3000 and 4000 ppm. The guava cuttings were dipped in the growth regulators for twenty minutes and then planted in the poly bags were kept in the mist chamber. The results of the experiment revealed that the root parameters like rooting percentage (87.83%), number of roots per cutting (11.02), maximum root length (12.75 cm) and shoot parameters like days required for bud sprouting (13.50 days), number of sprouts per cutting (2.77) and survival percentage of rooted cuttings (90.59 %) were observed the highest in the treatment where IBA @ 3000 ppm was used. It was followed by the treatment tested with IBA @ 4000 ppm. The least parameters were observed in the control.

Guava, IBA, IAA, NAA, growth regulators

"INFLUENCE OF PLANT GROWTH REGULATORS ON ROOTING OF HARDWOOD CUTTINGS IN GUAVA (Psidium guajava.L) cv. Lucknow-49", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 1, page no.b162-b165, January-2022, Available :http://www.jetir.org/papers/JETIR2201122.pdf

"INFLUENCE OF PLANT GROWTH REGULATORS ON ROOTING OF HARDWOOD CUTTINGS IN GUAVA (Psidium guajava.L) cv. Lucknow-49", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 1, page no. ppb162-b165, January-2022, Available at : http://www.jetir.org/papers/JETIR2201122.pdf