EFFECT OF SEED COLOURING ON FIELD PERFORMANCE AND SEED STORABILITY ON SOYBEAN (Glycine max (L.) Merrill)
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Date
1998-08-19
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE
Abstract
An investigation was carried out to study the effect of seed colouring on field
performance and seed storability on soybean (Glyciiie max (L.) Merrill) during
1996-97 at Department of Seed Science and Technology, UA.S., Dharwad. Seeds
were treated with four dyes viz,, Amaranthus red, Sunset yellow, Methylene blue
and Potassium permanganate each at three concentrations of 0.0, 0.5 and 1.0 per
cent in combination with or without fungicide and seeds were stored for 9 months
in cloth bag under ambient conditions.
Throughout storage period, seeds treated with Amaranthus red and Sunset
yellow showed higher germination percentage and vigour index compared to
Methylene blue while seeds treated with Potassium permanganate resulted in
drastic reduction of germination and vigour index. Potassium permanganate
treated seeds exhibited higher EC values throughout the storage over other dyes.
The seed moisture content fluctuated concomitantly with the change in relative
humidity and temperature of storage atmosphere. Among dyes, seed treatment
with Potassium permanganate showed least infection of storage fungi during
storage.
The germination percentage and vigour index was maximum at 0.5 per cent
concentration of dyes, followed by 1.0 per cent and minimum in control.
Throughout the storage period, the EG of seed leachate was more in the seeds
treated at higher concentration of dyes, while the occurrence of fungi was less at
higher concentration. The fungicide treated seeds recorded higher germination
percentage, vigour index, less EC and storage fungi infection throughout the
storage.
The field performance studies with dye treated seeds indicated that there
was no adverse effect on field emergence, growth parameters and yield and yield
attributes in soybean.
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