Abstract:
Seed priming is one of the pre-sowing seed management techniques where the seeds
are partially soaked and subsequently dried back for invigorative effect that expresses
on field emergence and extend up to yield. A field experiment was carried out to study
the effect of different priming treatments on seed germination, plant growth, bulb yield
and quality attributes of summer onion. Four priming treatments i.e distilled water,
PEG-6000 (10%), IAA (100 ppm) and KCl (2.5%) were used in this experiment. Seeds
were immersed in each priming media for 12 and 24 hours. Significant variation
recorded among the seed priming treatments with respect to the growth, yield and
biochemical characters studied viz., germination percentage, plant height, number of
leaves, relative water content, photosynthetic pigments, ascorbic acid, reducing sugar,
phenolic content, bulb weight and total bulb yield. The maximum germination
percentage (93%), highest plant height (28 cm), highest content of photosynthetic
pigment (28.47 mg/g), maximum bulb yield (19.96 t ha
ii
-1
)
and maximum reducing
sugar content (7.41%) were obtained from the treatment PEG 6000 (10%) for 12 hours.
It was observed that among the seed priming treatments, PEG 6000 (10%) for 12 hours
has showed the best performance in improving germination, growth, yield and quality
of summer onion.
Description:
A Thesis
Submitted to Department of Entomology,
Faculty of Agriculture.
Sher-e-Bangla Agricultural University,
Dhaka-
In partial fulfillment of the requirements for the degree of
MASTERS OF SCIENCE (MS)
IN
DEPARTMENT OF HORTICULTURE
