Evaluation of Radicle Emergence Test to Predict Seed Vigour and Field Emergence in Okra (Abelmoschus Esculentus L.) Seeds

2mm radicle length had highly significant negative correlation with MGT(-0.829**) followed by EC (-0.812**) and MJGT (-0.807**), and it had significant positive correlation with field emergence (0.904**) followed by germination (0.892**) and dehydrogenase activity (0.757*). Relationship between seed vigor parameters and radicle emergence per cent with 1mm and 2mm radicle length was also evaluated. The highest R 2 values were observed in 2mm radicle emergence per cent (R 2 Values: MJGT = 0.8839, MGT = 0.9223, EC = 0.8924, DA = 0.6335, GER = 0.9542 and FE = 0.9673) compared with 1mm length of radicle emergence per cent (R 2 Values: MJGT = 0.8812, MGT = 0.9156, EC = 0.8330, DA = 0.6204, GER = 0.9525 and FE = 0.9504) for most of the seed vigour parameters in ten different seed lots. The study concluded that counting 2mm radicle emergence at 24 hours could be used for a quick evaluation to assess the seed vigour in terms of field emergence in okra seed lots.