Nisrina Abdo

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Caffeine (1,3,7-trimethylxanthine) is a purine alkaloid and it is secondary metabolite produced naturally in plants. It plays a crucial role in defense and stress tolerance. A hydroponic experiment was carried out to study the morphological, biochemical, and ultrastructural effects of caffeine treatment on seedling of tobacco (Nicotiana tabacum L. cv.(More)
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