...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Botany >Elevated CO significantly delays reproductive development of soybean under Free-Air Concentration Enrichment (FACE).
【24h】

Elevated CO significantly delays reproductive development of soybean under Free-Air Concentration Enrichment (FACE).

机译：在自由空气浓缩（FACE）下，CO浓度升高会严重延迟大豆的生殖发育。

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

The effect of rising atmospheric concentration of carbon dioxide [CO] on the reproductive development of soybean (Glycine max. Merr) has not been evaluated under open-air field conditions. Soybeans grown under Free-Air CO Enrichment (FACE) exhibit warmer canopies due to decreased latent heat loss because of decreased stomatal conductance. According to development models based on accumulated thermal time, or growing degree days (pCd), increased canopy temperature should accelerate development. The SoyFACE research facility (Champaign, Illinois, USA) was used to test the hypothesis that development is accelerated in soybean when grown in [CO] elevated to 548 omol molp#. Canopy temperature was measured continuously with infrared thermometry, and used in turn to calculate GDD. Opposite to expectation, elevated [CO], while increasing canopy temperature, delayed reproductive development by up to 3 days (P <0.05). Soybean grown in elevated [CO] required ~49 pCd more GDD (P <0.05) to complete full bloom stage (R2) and ~52 pCd more GDD (P <0.05) to complete the beginning seed (R5) stage, but needed ~46 pCd fewer GDD (P <0.05) to complete seed filling (R6). Soybeans grown in elevated [CO] produced significantly more nodes (P <0.01) on the main stem than those grown under current [CO]. This may explain the delay in completion of reproductive development and final maturation of the crop under elevated [CO]. These results show a direct effect of rising [CO] on plant development that will affect both projections of grain supply and may be significant to other species including those in natural communities.
机译：尚未在露天田间条件下评估大气中二氧化碳[CO]浓度升高对大豆（Glycine max。Merr）生殖发育的影响。在自由空气CO富集（FACE）下生长的大豆由于气孔导度的降低而降低了潜热损失，因此表现出了较高的冠层。根据基于累积热时间或生长度天数（pCd）的开发模型，冠层温度升高应加速开发。 SoyFACE研究设施（美国伊利诺伊州尚佩恩，Champaign）用于检验以下假设：在[CO]中生长至548 omol molp＃时，大豆的生长会加速。冠层温度用红外测温法连续测量，然后用于计算GDD。与预期相反，[CO]升高，同时冠层温度升高，最多延迟了3天的生殖发育（P <0.05）。在[CO]浓度升高的条件下生长的大豆需要增加大约49 pCd的GDD（P <0.05）才能完成盛花期（R2），而增加大约52 pCd的GDD（P <0.05）才能完成开始的种子（R5）阶段，但是需要〜 GDD减少46 pCd（P <0.05），以完成种子填充（R6）。在高[CO]条件下生长的大豆比在当前[CO]条件下生长的大豆在主茎上产生更多的节（P <0.01）。这可以解释在[CO]升高的条件下，完成作物的生殖发育和最终成熟的延迟。这些结果表明，[CO]升高对植物发育的直接影响将影响谷物供应的两个预测，并且可能对包括自然群落中的其他物种在内具有重要意义。

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