THE ACCURACY OF ACCELERATED AGING TEST FOR EVALUATING THE PHSIOLOGICAL QUALITY OF SEEDS | ||
| Journal of Plant Production | ||
| Article 12, Volume 2, Issue 9, September 2011, Pages 1249-1258 PDF (425.32 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2011.85655 | ||
| Author | ||
| I. F. Mersal* | ||
| Seed Technology Res. Department, Field Crops Research Institute, ARC | ||
| Abstract | ||
| Accelerated aging test results were found to be affected by many factors namely; relative humidity, temperature degrees, exposure periods and seed chemical composition. Therefore, precaution should be taken when utilizing this test for evaluating seed viability. This study was carried out at Seed Technology unit, Mansoura, Dakhlia Governorate during 2010 and 2011 years, to determine the value of accelerated aging test conditions for evaluating seed vigour and its relationship to chemical composition of the tested seeds (wheat, soybean and sunflower). The main results could be summarized as follows: Conducting the accelerated aging test at the highest surrounded relative humidity level (100%) led to increasing seed moisture content and the increase was more rapidly comparing to conducting the test with using saturated salt solutions (SSAA) such as sodium hydroxide (75%Rh.). Increasing temperature degrees during the aging test release seed water absorption specially at saturated relative humidity (100%). Seed moisture contents increased as the exposure period to accelerated aging conditions was increased. Also soybean seed was more sensitive to the accelerated aging conditions especially relative humidity comparing to sunflower and wheat seed. So, the results suggest conducting the accelerated aging test for soybean seed at relative humidity 75% and temperature degrees not excesses 44Co for 72hour., (100% relative humidity, 41C0 for 72 hour) for wheat and (100% relative humidity, 44C0 for 72 hour) for sunflower. | ||
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