Vegetos

Abstract

Studies were undertaken at the Depart-ment of Seed Science and Technology, Tamil Na-du Agricultural University, Coimbatore using seeds of TNAU blackgram cv. CO 6 with a view to elicit information on standardization and identifi-cation of an easy, reliable vigour test and their relation with field emergence. The seeds were subjected to accelerated ageing (3 days, at 100% Relative Humidity and 40 C), controlled deterio-ration (25% moisture content for 40°C for 36h) and complex stressing vigour tests (40°C for 4h of soaking followed by 5°C for 2h of soaking) and compared with field emergence. Among them, accelerated ageing for 3 days, controlled deterio-ration 25% moisture content and 40°C for 36h have recorded germination percentage around 75 to 77% which was nearer to Indian Minimum Seed Certification Standards. Correlation among vigour test with field emergence indicated strong and positive association with accelerated ageing (r = 0.933), controlled deterioration (r = 0.500) and complex stress vigour test (r = 0.337) among this accelerated ageing provided higher correla-tion than other tests for prediction of field stand for TNAU blackgram CO 6 cultivar.