Effect of Pre-sowing Seed Treatments on Germination and Seedling Vigour of Ber (Ziziphus rotundifolia Lamk.)
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Date
2022
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Agriculture University, Jodhpur
Abstract
The present investigation entitled “Effect of pre-sowing seed treatments on
germination and seedling vigour of Ber (Ziziphus rotundifolia Lamk.)” was conducted
at Nursery of Instructional Farm, College of Agriculture, Jodhpur, from February,
2022 to June, 2022. The experiment was laid out in completely randomized design
with three replications with 18 pre-sowing seed treatments i.e., Sulfuric acid (30%
concentration) soaking for 15, 30, 45 and 60 minutes, Gibberellic acid soaking @ 250
ppm for 12 and 24 hours, Gibberellic acid soaking @ 500 ppm for 12 and 24 hours,
Potassium nitrate soaking @ 0.5%, 1.0%, 1.5% and 2.0% for 12 hours, Boiling water
soaking for 5, 10, 15 and 20 minutes, tap water soaking for 24 hours and control.
Amongst the different pre-sowing seed treatments, soaking with GA3 @ 250
ppm for 24 hours resulted in the highest germination at 45 DAS (48.91%) and 60
DAS (50.0%), shoot length of seedling at 60 DAS (52.40 cm) and 90 DAS (72.10
cm), root length of seedling (32.13 cm), number of primary roots per seedling (33.43),
number of primary branches per seedling at 90 DAS (4.10), fresh weight of seedling
(14.97 g), fresh weight (11.0 g) and dry weight (4.98 g) of shoot, fresh weight (3.94 g)
and dry weight (2.0 g) of root, seedling survival (100%), Vigour Index-I (3605.0) and
Vigour Index-II (300.0) at 90 DAS, collar diameter of seedling (2.78 mm and 4.44
mm), number of leaves per seedling (46.0 and 69.10), inter-nodal length (2.35 cm and
2.90 cm) and leaf size (4.90 cm2 and 6.0 cm2
) at 60 and 90 DAS, respectively, with
the highest net returns (1549.0) and B:C ratio (1.22) which was significantly superior
than other treatments except while the earliest seed germination (21.90 days) was
recorded with sulphuric acid soaking for 60 minutes treatment.
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Citation
Lamba, Sanju 2022. Effect of Pre-sowing Seed Treatments on Germination and Seedling Vigour of Ber (Ziziphus rotundifolia Lamk.). M.Sc. Thesis, Agriculture University, Jodhpur