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|標題:||Both warm water soaking and matriconditioning treatments enhance anti-oxidation of bitter gourd seeds germinated at sub-optimal temperature||作者:||Wang, H.Y.
|關鍵字:||suboptimal temperature;hydrogen-peroxide;oxygen;chloroplasts;glutathione;physiology;responses;emergence;plants;leaves||Project:||Seed Science and Technology||期刊/報告no：:||Seed Science and Technology, Volume 31, Issue 1, Page(s) 47-56.||摘要:||
This study evaluated the effects of warm water soaking and matrictulitioning on anti-oxidative activities of germinating bitter gourd (Momordica charantia L.) seeds. The seeds were either soaked in 50degreesC water for 60 min or primed with moistened vermiculite at 25degreesC for 36 h, followed by air-drying back to their initial moisture level. A portion of the seeds were also subjected to soaking and subsequent priming. All the treated and non-treated (control) seeds were germinated at 25 or 20degreesC. Results indicated that the sub-optimal temperature of 20degreesC decreased germination rate, increased malondialdehyde and total peroxides accumulation and reduced anti-oxidative defense systems of bitter gourd seeds, suggesting that sub-optimal temperature effects were associated with lipid peroxidation. At both 25 and 20degreesC conditions, water-soaked and primed seeds showed marked increases in the activities of anti-oxidative enzymes and the levels of antioxidants in germinating seeds. Significant improvements in germination percentage and germination speed were also observed for water-soaked and primed seeds as compared with control. There is a positive association between the anti-oxidative capacity retained in the treated seeds and germination rate in the tested bitter gourd cultivar.
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