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用供硫三个水平的Hewit营养液进行砂培试验。结果表明,35S总是优先分配于生长代谢最为活跃的器官如叶、花、果等。硫胁迫植株对35S表现了超强吸收(“饥饿效应”)。成熟期35S分配或再分配比例因供硫水平而异;硫胁迫植株因无果实形成,35S主要集中于茎和根,适中供硫植株集中于果壳和子粒,而过量供硫则以叶片和果壳占有较大比例。随35S饲喂时期的推迟,滞留于营养器官中的35S比例减少,而分配或再分配于果实内的比例显著增加。
Sputtering experiments were carried out with three levels of Hewit nutrient solution. The results showed that 35S was always preferentially assigned to organs, such as leaves, flowers and fruits, which had the most active growth and metabolism. Sulfur stress plants showed super-absorption of 35S (“starvation effect”). The proportion of 35S distribution or redistribution at maturity was different due to the level of sulfur supply. Sulfur stress plants were formed without fruit, 35S mainly concentrated on stems and roots, moderate sulfur supply plants concentrated on husks and seeds, Husk occupies a large proportion. With the postponement of the 35S feeding period, the proportion of 35S retained in vegetative organs decreased, while the proportion allocated or redistributed within the fruit increased significantly.