SIDDARAJU, R.DIVYA, H. V.2017-07-012017-07-012010-06-22Th-9727http://krishikosh.egranth.ac.in/handle/1/5810023937Seed quality is a multiple concept, comprising of several physical, chemical and biological components. Various factors will affect the longivity. Among them, seed moisture, packaging materials and seed dressing chemicals are taken for the present study to know their effect on seed quality and seed longevity during storage for a period of nine months. The study revealed that, seeds stored at 10 per cent moisture level recorded less moisture (11.33%), highest germination (83.87%), vigour indices based on mean seedling length and dry weight (2287 and 615, respectively), field emergence ( 61.75%), pH (5.11) TDH (0.077) TSS (1.46mg/g) , alpha amylase activity (0.69 cm) and less EC(864 µS/cm), insect infestation (26.06%) and seed infection (3.29%) at the end of ninth month after storage. Among packaging materials, superbag was found superior over other packaging materials. At the end of storage seeds in superbag showed highest germination(92.87%), vigour indices based on seedling length and dry weight (2754 & 799 respectively), field emergence(78.46%), TDH (0.089), Total soluble seed protein (1.59 mg/g) Alpha amylase activity (0.77cm) and less EC (589 µS/cm), insect infestation and seed infection ( 47.92% & 3.29% respectively) after ninth month of storage. The seed dressing chemicals, highest germination (90.58%) vigour indices based on both mean seedling length and dry weight (2733 & 832 respectively), field emergence (75.55%), pH (5.63), TDH (0.066), total soluble seed protein (1.51 mg) Alpha amylase activity (0.73cm) and less EC (557 µS/cm), ), insect infestation ( 11.08%) and seed infection was absent in Thiram @ 2g/kg and Sevin @ 2g/kg treated seeds through out the storage period. Thus it can be concluded that, seeds stored at Thiram2g/kg and Sevin 2g/kg each treated seeds stored in super bag at 10per cent seed moisture level can be safely stored for nine months.ennullThesis