INFLUENCE OF PLANT GROWTH REGULATORS AND WOUNDING TO STEM CUTTING OF GARDENIA (Gardenia jasminoides) IN WINTER AND SUMMER SEASON

Abstract

The present experiment was conducted to find out the “influence of plant growth regulators and wounding to stem cutting of gardenia (Gardenia jasminoides) in winter and summer season”, conducted at Horticulture farm, Sher-e-Bangla Agricultural University, Dhaka. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replication comprising with one cultivar (Gardenia Jasminoides) and the research work was conducted with one set of treatment consisting of four growth regulator namely, T vi

0 = Control, T = Mixed plant growth regulators (1000 ppm IBA + 1000 ppm NAA), T = Wounding to cutting base and T 3 2 = Wounding to cutting base + Mixed plant growth regulators. The effect of these treatments on percentage of rooting, percentage of shooting, shoot no. and length, root no. and length and survival percentage were studied. The results revealed that the, growth regulators exerted significant influence on different parameters studied. Among the growth regulators T 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 such as number of shoots and roots, length of shoot and root and survival percentage in both winter and summer season. On the basis of the results obtained, it was concluded that the T 3

recorded the highest shooting, rooting and survival percentage of cutting and was found most useful, healthy and vigorous planting materials of Gardenia Jasminoides.