International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(2): 2550-2564

Role of Ethrel and Storage in Dormancy Breaking in Groundnut (Arachis hypogaea L.)
Deepthi Rajan1*, Rajiv Kumar2, K. Devyani3 and M. J. Ramya3
1Department of Seed science and Technology
2Department of Genetics and Plant Breeding

3College of Agriculture, Junagdh Agricultural University, Junagadh – 362 001 (Gujarat), India
*Corresponding author

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.

Keywords: Groundnut seed dormancy, Genotypes, Ethrel concentrations, Storage periods
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How to cite this article:

Deepthi Rajan, Rajiv Kumar, K. Devyani and Ramya, M. J. 2020. Role of Ethrel and Storage in Dormancy Breaking in Groundnut (Arachis hypogaea L.).Int.J.Curr.Microbiol.App.Sci. 9(2): 2550-2564. doi: