Seed priming studies in annual chrysanthemum (Chrysanthemum coronarium.)
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Date
2018
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CCSHAU
Abstract
Annual chrysanthemum is highly remunerative and short duration flower crop, which has
problems like poor seed germination, low seed vigour and short storage life. An effort was made to
study the effect of accelerated ageing and priming on seed quality during storage. Four different seed
genotypes collected from Horticulture farm, Department of Horticulture were subjected to accelerated
ageing and different priming treatments. The priming treatments composed of 0.1 and 1% KNO3, 2 and
4% CaCl2, 100, 200and300ppm GA3, control and hydration. The accelerated ageing was carried out at
40±1ºC for 24, 36, 48, 60 and 72 hours. No germination was recorded when the seeds were accelerated
aged at 40±1ºC for 48, 60 and 72 hours. All the seed genotypes showed decline in most of seed quality
parameters when they were accelerated aged at 40±1ºC for 24 and 36 hours. Of the genotypes screened
for seed quality in fresh and accelerated seeds during storage, genotype – 1 performed significantly
better as compared to other genotypes. It was observed that priming with 0.5% KNO3 in fresh and
accelerated aged seeds showed significant improvement in seed quality parameters. In case of storage
duration (0, 2,4,6,8 and 10 months) also the seeds treated with 0.5% KNO3 exhibited better quality
parameters. Priming treatments were more effective in improving the seed quality parameters in
accelerated aged seeds and in case of storage duration also.
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