Effects of accelerated ageing on germination and biochemistry of eight rice cultivars |
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| Authors: | Ehsan Bijanzadeh Ruhollah Naderi Kazem Nosrati Todd P Egan |
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| Institution: | 1. College of Agriculture and Natural Resources of Darab, Shiraz University, Darab, Iran;2. Department of Physical Geography, Shahid Beheshti University, Tehran, Iran;3. Division of Mathematics and Natural Sciences, Elmira College, Elmira, NY, USA |
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| Abstract: | Rice seed deterioration rate due to aging is correlated with ambient temperature, relative humidity, and moisture. Eight cultivars were analyzed for differences in seed deterioration via accelerated ageing at 45°C and 100% relative humidity (RH) for 24, 48, 72, 96, 120 hr. Khazar and Neda had highest germination percentages when exposed to 120 hr seed ageing. For Lenjan, with increased seed ageing, moisture content increased from 9.8% in the control to 21.7% after the 120 hr treatment. Khazar and Shiroudi had the lowest decrease in shoot length. Root length decreased from 0 hr control to 120 hr treatment, and was lowest in Fajr and Khazar. Minimum electrical conductivity was observed in Neda and Fajr after 120 hr. Lowest increases in lipid peroxidation from control to 120 hr treatment was in Fajr, Khazar, and Neda. Neda and Khazar are the most suitable cultivars to store in the humid, sub-tropics of northern Iran. |
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| Keywords: | Lipid peroxidation Oryza percent germination peroxidation product seed ageing seed deterioration |
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