National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Experiment was conducted to evaluate the effect of different ethrel concentrations and storage periods on dormancy breaking in groundnut. Control (C1) and three ethrel concentrations; C2- 25 ppm, C3-50 ppm, C4- 75 ppm were evaluated for four different storage periods; S1-7 days after harvest, S2-14 days after harvest, S3-21 days after harvest and S4-28 days after harvest in freshly harvested groundnut dormant varieties, GG-11 and GG-20 and compared their performance with that of non-dormant variety, GG-7. The observations were recorded on seed germination (%), Speed of germination, seed vigour index-I and seed vigour index-II. The results of investigation revealed that absence of dormancy in GG-7 triggering it to reap superior results immediately in all seed quality parameters studied. All ethrel treatments gave better results when compared to control (no treatment) in breaking seed dormancy and improving seed quality parameters. With increase in ethrel concentration the responses also got improved with best always from ethrel concentration @ 75 ppm. In case of dormant genotypes, dormancy was broken and performance of seed quality parameters was driven to the level of non-dormant genotype whereas non-dormant genotype had done betterment in its performance under the influence of ethrel treatments. In case of storage study it was observed that the advancement in storage period broke seed dormancy more effectively along with improvement in seed quality parameters. Thus, from the results of the study, it seems quite logical to note that the seeds kept in storage for a period of 28 days after harvest and pre-soaked in 75 ppm ethrel concentration can effectively broke the seed dormancy and can improve all the seed quality parameters as well to a performance level that can equate with that of non-dormant genotype.
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