Evaluation of Radicle Emergence Test to Predict Seed Vigour and Field Emergence in Okra (Abelmoschus Esculentus L.) Seeds
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2019, Vol 9, Issue 3
Abstract
An experiment was conducted to evaluate and correlate the radicle emergence test with other vigor parameters to predict the vigor and field emergence potential in ten seed lots of okra with varying vigor. The results showed that the significant differences were observed between seed lots in terms of physiological parameters viz., speed of germination, germination percentage (GER), root length, shoot length, dry matter production, vigor index, mean just germination time (MJGT), mean germination time (MGT), radicle emergence (RE) and field emergence (FE) and biochemical parameters viz., electrical conductivity of seed leachate (EC) and dehydrogenase activity (DA). The radicle emergence test with 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 R2 values were observed in 2mm radicle emergence per cent (R2 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 (R2 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.
Authors and Affiliations
Chinnasamy G. P, Sundareswaran S, Renganayaki P. R, Srinivasan S
Keywords
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- EP ID EP601346
- DOI 10.24247/ijasrjun201937
- Views 144
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