STUDIES ON THE EFFECT OF IBA TREATMENTS ON GROWTH AND ROOTING OF SEMI HARDWOOD CUTTINGS IN POMEGRANATE
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Date
2023-11-04
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UHF Nauni
Abstract
The present investigations entitled “Studies on the effect of IBA treatments on growth
and rooting of semi hardwood cuttings in pomegranate” were undertaken at Experimental Farm of
Department of Seed Science & Technology, Dr Y S Parmar University of Horticulture and Forestry
Nauni, Solan H.P. during 2022-2023. The experiment was laid out in Randomized Block Design
(Factorial) with twelve treatment combinations replicated thrice, comprising of four IBA levels (0,
1000, 1500 and 2000 ppm) and three cutting segments (top, middle and basal). Among different levels
of IBA, the treatment IBA @ 2000 ppm exhibited significantly higher per cent sprouting (60.00 %),
number of shoot per cutting (5.21), shoot length (22.16 cm), shoot diameter (4.56 mm), number of
leaves per cutting (14.78), leaf area (7.32 cm2), leaf chlorophyll content (6.03 mg g-1), fresh weight of
shoots (7.24 g), dry weight of shoots (4.93 g), per cent rooting (58.89 %), number of roots per cutting
(12.02), maximum root length (14.14 cm), fresh weight of roots (3.35 g), dry weight of roots (1.59 g)
and biomass of cuttings (6.51 g). Among cutting segments, basal segment resulted in significantly
increased per cent sprouting (56.67 %), number of shoots per cuttings (5.54), shoot length ( 21.86
cm), shoot diameter (4.46 mm), number of leaves per cutting (16.30), leaf area (8.68 cm2), leaf
chlorophyll content (6.22), fresh (8.04 g) and dry weight of shoots (4.85 g), per cent rooting (60.42
%), number of roots per cutting (13.89), maximum root length (14.54 cm), fresh (3.63 g) and dry
weight of roots (1.79 g) and biomass of cuttings (6.64 g). The interactive effect of IBA @ 2000 ppm +
Basal segment i.e. treatment of basal cuttings with IBA @ 2000 ppm had recorded significantly higher
values in terms of per cent sprouting (75.00 %), number of shoots per cutting (7.15), shoot length
(29.17 cm), shoot diameter (5.46 mm), number of leaves per cutting (20.44), leaf area(11.54), leaf
chlorophyll content (7.25), fresh (10.37 g) and dry weight of shoots (6.68 g), per cent rooting (81.67
%), number of roots per cutting (18.41), maximum root length (18.43 cm), fresh weight of roots (4.67
g), dry weight of roots (3.18 g) and biomass of cuttings (9.86 g).