...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >Effect of ultraviolet-B radiation in laboratory on morphological and ultrastructural characteristics and physiological parameters of selected cultivar of Oryza sativa L.
【24h】

Effect of ultraviolet-B radiation in laboratory on morphological and ultrastructural characteristics and physiological parameters of selected cultivar of Oryza sativa L.

机译：实验室中紫外线B辐射对所选水稻品种形态和超微结构特征及生理参数的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ultraviolet-B radiation (UVBR) affects plants in many important ways, including reduction of growth rate and primary productivity, and changes in ultrastructures. Rice (Oryza sativa) is one of the most cultivated cereals in the world, along with corn and wheat, representing over 50 % of agricultural production. In this study, we examined O. sativa plants exposed to ambient outdoor radiation and laboratory-controlled photosynthetically active radiation (PAR) and PAR + UVBR conditions for 2 h/day during 30 days of cultivation. The samples were studied for morphological and ultrastructural characteristics, and physiological parameters. PAR + UVBR caused changes in the ultrastructure of leaf of O. sativa and leaf morphology (leaf index, leaf area and specific leaf area, trichomes, and papillae), plant biomass (dry and fresh weight), photosynthetic pigments, phenolic compounds, and protein content. As a photoprotective acclimation strategy against PAR + UVBR damage, an increase of 66.24 % in phenolic compounds was observed. Furthermore, PAR + UVBR treatment altering the levels of chlorophylls a and b, and total chlorophyll. In addition, total carotenoid contents decreased after PAR + UVBR treatment. The results strongly suggested that PAR + UVBR negatively affects the ultrastructure, morphology, photosynthetic pigments, and growth rates of leaf of O. sativa and, in the long term, it could affect the viability of this economically important plant.
机译：紫外线B辐射（UVBR）以许多重要方式影响植物，包括降低生长速度和初级生产力以及超微结构的变化。稻米（Oryza sativa）与玉米和小麦一起，是世界上种植最多的谷物之一，占农业总产量的50％以上。在这项研究中，我们检查了种植30天期间暴露于室外室外辐射以及实验室控制的光合有效辐射（PAR）和PAR + UVBR条件下2 h / day的苜蓿植物。研究了样品的形态和超微结构特征以及生理参数。 PAR + UVBR引起了稻的超微结构和叶片形态（叶片指数，叶面积和比叶面积，毛状体和乳突），植物生物量（干重和鲜重），光合色素，酚类化合物和蛋白质含量。作为针对PAR + UVBR损伤的光保护适应策略，酚类化合物的含量增加了66.24％。此外，PAR + UVBR处理会改变叶绿素a和b以及总叶绿素的水平。此外，PAR + UVBR处理后总类胡萝卜素含量降低。结果强烈表明，PAR + UVBR对稻的超微结构，形态，光合色素和叶片生长速率具有负面影响，从长远来看，可能会影响该重要植物的生存能力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号