...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Botany >Photosynthetic limitation as a factor influencing yield in highbush blueberries (Vaccinium corymbosum) grown in a northern European environment
【24h】

Photosynthetic limitation as a factor influencing yield in highbush blueberries (Vaccinium corymbosum) grown in a northern European environment

机译：作为影响北欧环境中生长的高骨髓蓝莓（VacciniumiumBoSum）中产量的光合限制

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

Published evidence indicates that nearly 60% of blueberry-producing countries experience yield instability. Yield is a complex trait determined by genetic and environmental factors. Here, using physiological and biochemical approaches, we tested the hypothesis that yield instability results from year-to-year environmental variation that limits carbon assimilation, storage and partitioning. The data indicate that fruit development depends primarily on the daily production of non-structural carbohydrates by leaves, and there is no accumulation of a starch buffer to allow continuous ripening under conditions limiting for photosynthesis. Photosynthesis was saturated at moderate light irradiance and this was mainly due to stomatal and biochemical limitations. In a dynamic light environment, photo-synthesis was further limited by slow stomatal response to increasing light. Finally, labelling with (CO2)-C-13 at specific stages of fruit development revealed a relatively even distribution of newly assimilated carbon between stems, roots and fruits, suggesting that the fruit is not a strong sink. We conclude that a significant component of yield variability results from limitations in photosynthetic efficiency that are compounded by an inability to accumulate starch reserves in blueberry storage tissues in a typical northern European environment. This work informs techniques for improving agronomic management and indicates key traits required for yield stability in such environments.
机译：已发表的证据表明，近60％的蓝莓生产国经历了产量不稳定。产量是由遗传和环境因素决定的复杂性状。在这里，使用生理和生化方法，我们测试了屈服不稳定的假设，从年度为期环境变异，限制了碳同化，储存和分区。这些数据表明，水果开发主要取决于叶子的非结构碳水化合物的日常生产，并且没有淀粉缓冲液的积累，以允许在限制光合作用的条件下连续成熟。光合作用在中等光辐照下饱和，这主要是由于气孔和生化限制。在动态光环境中，光谱响应对增加光的慢气孔反应进一步限制。最后，用（CO2）-C-13在果实发育的特定阶段标记揭示了茎，根和水果之间的新同化碳的相对均匀分布，这表明水果不是强力的水槽。我们得出结论，屈服可变性的显着成分由光合效率的局限性，通过无法在典型的北欧环境中积累蓝莓储存组织中的淀粉储备。这项工作通知技术改进农艺管理，并表明在此类环境中产生稳定性所需的关键特征。

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