STUDIES ON IMPACT OF ETIOLATION AND PLANT GROWTH REGULATORS CONCENTRATION ON ROOTING BEHAVIOUR OF AIR LAYERS OF GUAVA (Psidiumguajava L)
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 1
Abstract
The experiment was conducted in the horticulture garden at Bihar Agricultural college, Sabour in year 2009-2010.. The design of experiment was Randomized Block Design with three replications. The experiment comprised of twelve treatments including control. The symbol and treatment detail is are as follows ;- T1 – Control, T2- Etiolation, T3 – NAA @ 3000 ppm, T4 – NAA @ 6000 ppm, T5 – NAA @ 3000 ppm + etiolation, T6 – IBA @ 3000 ppm, T7 – IBA@6000 ppm, T8 – IBA @ 3000 ppm + etiolation, T9 – NAA @ 3000 ppm + IBA @ 3000 ppm, T10 – NAA@ 3000 ppm + IBA @ 6000 ppm, T11- NAA @ 6000 ppm + IBA @ 3000 ppm and T12 – NAA @ 6000 ppm + IBA @ 6000 ppm. Maximum rooting(94.66 %) was obtained with etiolation followed by application of IBA @ 3000 ppm concentration, which was statistically at par with T5(91.33 %) and T7(88.33 %). Whereas, control i.e., T1 showed 54.33 per cent rooting in air-layers.Etiolation followed by application of growth regulators i.e., IBA @ 3000 ppm showed the maximum number and length of secondary roots i.e., 15.75 & 11.62 cm. The maximum fresh weight(2.90 g), dry weight(0.94 g) and number(18.33) of new leaves were recorded with etiolation + IBA @ 3000 ppm concentration. The best treatment in respect of survivability was T8(etiolation + IBA @ 3000 ppm) which showed maximum survival(78.33 %). Next effective treatment was T5(etiolation + NAA @ 3000 ppm) with 75.90 per cent survival of air-layers in nursery.
Authors and Affiliations
BIBHA KUMARI, SURAJ PRAKASH, RAJESH KUMAR
Keywords
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