MULTIPLICATION OF WATER APPLE (Syzygium samarangense) CULTIVARS THROUGH STEM CUTTING USING DIFFERENT PLANT GROWTH REGULATORS

Abstract

An experiment was conducted at the Horticulture Germplasm Center, Horticulture Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from September 2019 to December 2019 to find out the multiplication of water apple (Syzygium samarangense) cultivars through stem cutting using different plant growth regulators. The experiment was laid out in Randomized Complete Block Design having twelve treatment combinations, comprising with two factors (A) Cultivars (C ii

1 : Red water apple, C : White water apple and C 3 : Green water apple) and (B) Growth regulators (H 2 0 : Control, H :Aloe vera gel, H 2 : NAA-15mg/L, H : Mixed rooting hormone (IAA, IBA and NAA) 3gm/L.

The treatments were repeated thrice. The effect of this treatments on shooting, rooting, shoot and root growth parameters, and survival percentage were studied. The results revealed that the different cultivars, growth regulators and their interactions exerted significant influence on different parameters studied. White water apple (C 3 ) showed better multiplication efficiency than Red and Green water apple. Whereas among the growth regulators H 3 2 found superior in terms of significantly less days taken for shooting and rooting of cuttings with maximum shooting and rooting percentage. Similar trend were observed on the growth parameters of shoot and root such as number of leaves, shoots and roots, percentage of shoot and root, length of shoot and root, fresh and dry weight of plant, sprouting and survival percentage. The interaction of cultivars and different growth regulators concentrations revealed that C 2 H recorded the maximum shooting, better growth rate of roots and shoots at different intervals with higher sprouting and survival percentage. On the basis of the results obtained, it was concluded that the C 2 cultivar treated with H 3 3 recorded the highest shoot growth and survival of cutting and was found most useful, healthy and vigorous planting materials of water apple.