Effect of seed coating on longevity of wheat (Triticum aestivum L.) seeds
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Date
2021-11-26
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Palampur
Abstract
The experiment was conducted to evaluate the effect of different seed coating
treatments on seed longevity and further to identify the effective seed coating
treatment for enhancing seed longevity in wheat seeds. The seeds of wheat variety
HPW-155 were coated with nine different treatments comprising of polymer,
fungicide, insecticide, polymer-fungicide and polymer-insecticide combinations. The
treated and untreated seeds were stored in three replications for twenty-four months
after packing in HDPE (high density polyethylene) interwoven non-laminated bags.
The evaluation of seed quality parameters was made at bi-monthly intervals for
twelve months (13th to 24th months). The experiment revealed that irrespective of seed
coating, seed deteriorated and the vigour declined with aging of seeds. Amongst
various treatments, seed coated with polymer @ 3 ml per kg of seed + vitavax 200 @
2 g per kg of seed (T6) was found superior for quality parameters viz., germination per
centage (93.00%), speed of germination (18.45), seedling length (16.06 cm), seedling
dry weight (0.0116 g), seedling vigour index - I (1494), vigour index - II (1.079) and
field emergence (82.00%) at the end of 24 months of storage over untreated control
(T1). Hence, combination of polymer with vitavax can effectively be utilized to
prevent the rapid deterioration of the seed during storage thereby maintaining the
quality for a longer period of time.