Physiological and biochemical basis for determining seed longevity in carrot (Daucus carota L.)
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Date
2016
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Punjab Agricultural University, Ludhiana
Abstract
The present investigation was carried out at Seed Technology Centre, Punjab Agricultural
University, Ludhiana. The freshly harvested foundation seed of carrot cv. Punjab Carrot Red
was stored from June 2015 to June 2016 under different storage temperature conditions
(ambient, cold room and refrigerator) in four different packaging materials (cloth bag, plastic
bag 700 gauge, desiccator with silica gel and desiccator with drying beads). The initial
moisture content of carrot seeds was 6.90%. Bimonthly observations with respect to
physiological and biochemical seed quality parameters were conducted to determine the
longevity and viability of the stored seeds. Based upon the observed results it was concluded
that if the carrot seeds with MC of 5.5±1% to 5.8±1% stored in the desiccator containing
drying beads or silica gel and stored in refrigerator (~5.9°C) with RH of 30.36±5% or cold
room (~15.7°C) with RH of 56.76±5%, can maintain seed viability up to 12 months. It was
also inferred that, under ambient temperature conditions (~29.4°C) at RH of 37.2±5% with
MC of 6.7±1%, the carrot seeds can be stored for 12 months if packed in the cloth bag.
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