Abstract
The laboratory experiments were comprised of 20 genotypes with five different seed coat colours (Black, Brown, Variegated, Green and Yellow) and seeds were stored for 10 months in polythene bags to evaluate the physiological and biochemical changes during storage. The results revealed that black coloured genotypes showed resistant for seed ageing followed by brown coloured genotypes. Yellow coloured genotypes are susceptible for seed ageing followed by green coloured genotypes. Among the genotypes, PB-5 offered highest germination (97.67%), mean seedling dry weight (56.02 mg). EC 76756 recorded highest mean seedling length (42.63 cm) and lower activity of TSS (93.43 to 118.69 (µg/ml of seed leachates). Minimum electrical conductivity was found in black coloured seeds (0.477 to 0.587 dS cm-1) from initial to 10th month of storage. And minimal seed germination, mean seedling length, seedling dry weight (90%, 30.48 cm, 47.54 mg respectively) and maximum EC (0.867 to 1.434 dS cm-1) and TSS (135.56 to 179.87 µg/ml of seed leachates) were found in 115-B genotype.
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