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在叶组织中,硝酸盐和亚硝酸盐同化为还原氮的过程对光的依赖性仍是一个有争论的问题。本文研究了几种植物的叶中,~(15)NO~-_3和~(15)NO~-_2的同化对光和氧的依赖性。材料和方法供试材料:试验A为小麦、大豆、向日葵和烟草;试验B为小麦、玉米和大豆。小麦盆栽,最初4天逐日用底水灌溉,随后用改良的半浓度Hoagland溶液(含有5mM KNO_3)浇灌。在生长箱中培育幼苗,24小时内光照10小时(25℃)、黑暗14小时08℃)。将7天
The dependence of light on nitrate and nitrite assimilation into nitrogen reduction in leaf tissue remains a matter of debate. In this paper, the dependence of light and oxygen on the assimilation of ~ (15) NO ~ -3 and ~ (15) NO ~-2 in leaves of several plants was studied. Materials and Methods Materials tested: Test A was wheat, soybeans, sunflower and tobacco; Test B was wheat, corn and soybeans. Wheat pots were drenched daily with base water for the first 4 days and then watered with a modified half-strength Hoagland solution containing 5 mM KNO 3. Seedlings were grown in a growth chamber with light exposure for 10 hours (25 ° C) in 24 hours, darkness 14 hours 08 ° C). Will be 7 days