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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >EFFECT OF SUPPLEMENTARY ULTRAVIOLET-B RADIATION ON YOUNG WHEAT SEEDLINGS
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EFFECT OF SUPPLEMENTARY ULTRAVIOLET-B RADIATION ON YOUNG WHEAT SEEDLINGS

机译：补充紫外线B辐射对年轻小麦幼苗的影响

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摘要

Effect of supplementary UV-B radiation (1 mW m(-2)) on photosynthesis, flavonoid content and anatomical changes was studied in young wheat leaves, It was observed that supplementary UV-B radiation did not affect PS II activity, assayed as water to phenylenediamine, However, PS I activity, assayed as reduced dichlorophenol indophenol to methyl viologen, showed an increase, UV-B treatment resulted in qualitative and quantitative changes in UV-B absorb; ing phenolic compounds, Flavonol (Kaempferol) and caumarin showed quantitative increase due to supplementary UV-B exposure to the wheat leaves. Synthesis of cinnamic acid was observed only after 4 days of UV-B treatment, UV-B treatment resulted in significant anatomical changes in the leaves. There was a massive increase in the cutin synthesis, Epidermal cells were. largely destroyed, while hypodermal cells were seen to replace the epidermal cells. [References: 26]
机译：研究了补充的UV-B辐射（1 mW m（-2））对年轻小麦叶片光合作用，类黄酮含量和解剖变化的影响，观察到补充的UV-B辐射不影响PS II活性，以水为标准然而，以二氯苯酚吲哚酚还原为甲基紫精测定的PS I活性显示出增加，UV-B处理导致UV-B吸收的定性和定量变化。在酚类化合物中，黄酮醇（Kaempferol）和甘菊酯显示出定量增加，这是因为小麦叶片补充了UV-B暴露。仅在UV-B处理4天后才观察到肉桂酸的合成，UV-B处理导致叶片出现明显的解剖变化。表皮细胞的角质合成大大增加。大部分被破坏，而皮下细胞被替换为表皮细胞。 [参考：26]

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