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Research Journal of Seed Science
  Year: 2013 | Volume: 6 | Issue: 1 | Page No.: 1-15
DOI: 10.3923/rjss.2013.1.15
Effect of Sowing Dates and Harvesting Dates on Germination and Seedling Vigor of Groundnut (Arachis hypogaea) Cultivars
Pushp Sharma, Virender Sardana and Sukhvinder Singh Kandhola

Abstract:
Groundnut exhibits indeterminate growth habit resulting in seeds of varying sizes and maturity at harvest and probably there may also be differences in quality. Even under sub-optimal conditions, 20-30% seeds either do not germinate or fail to develop into healthy seedlings due to loss in seed vigor resulting in poor plant stand in the field. Laboratory experiment was carried out to determine the quality of seeds of SG 99 (Spanish bunch type) and M 522 (semi-spreading) cultivars grown in field on 4 sowing dates (25 April, 10 May, 25 May and 10 June) and harvested at 3 different stages (120, 135, 150 days after sowing). Studies were initiated three months after each harvesting date to overcome seed dormancy. Significant variations were recorded in the two cultivars for most of the parameters studied (germination, moisture, fresh weight, dry weight, seedling length, vigor index). Sowing and harvesting dates significantly influenced some of these parameters. Delay in sowing from 25 April to 10 June reduced 100 kernel weight and oil content but marginally increased shelling out turn. Maximum dry matter at physiological maturity was accumulated by crop harvested at 135 days after sowing (DAS). Overall, seeds of crop harvested at 135 DAS had significantly higher mean germination (91.3%), seedling length (8.8 cm), dry matter (0.090 g) and vigor index I (806.4). Bunch type cultivar (SG 99) surpassed the semi-spreading cultivar (M 522) in almost all the germination related traits and vigor index.
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How to cite this article:

Pushp Sharma, Virender Sardana and Sukhvinder Singh Kandhola, 2013. Effect of Sowing Dates and Harvesting Dates on Germination and Seedling Vigor of Groundnut (Arachis hypogaea) Cultivars. Research Journal of Seed Science, 6: 1-15.

DOI: 10.3923/rjss.2013.1.15

URL: https://scialert.net/abstract/?doi=rjss.2013.1.15

 
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