• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Management, Education and Information >Response of Gas Exchange to Soil Drought in Old P. kangdingensis Cuttings of Section Tacamahaca Spach
【24h】

Response of Gas Exchange to Soil Drought in Old P. kangdingensis Cuttings of Section Tacamahaca Spach

机译：塔卡曼卡斯斯章节康丹斯的康复康丹斯的土壤干旱响应

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, the cutting seedlings of P. kangdingensis, which age of 300-500 years old and diameter at breast height (DBH) was greater than 1m were used as experimental materials, and the anatomical structure of the leaves and stems of seedlings were studied by the method of paraffin section. The pot experiment was conducted by way of weighing to control water content in soil, that was to weigh the pot in every afternoon and supplement the consumption of water to keep it about 60% of the maximum field water capacity, and the control was kept about 80% of that. The water control test lasted for about 3 months. The water control test lasted for about 3 months, and gas exchange parameters were measured. The results showed that under drought treatment, the intercellular CO_2 concentration (Ci), stomatal conductance (Gs), transpiration rate (Tr), net photosynthetic rate (Pn), water use efficiency (WUE) and stomatal limit (Ls) decreased significantly compared with the well-watered control, and there were significant differences in Pn, Gs, Tr and Ls. Observed reductions of Pn were mainly due to reductions in stomatal conductance, indicating that apart from stomatal closure, the photosynthetic apparatus was also partly inhibited.
机译：在本文中，使用P. Kangdingensis的切割幼苗，乳房高度（DBH）的年龄为300-500岁（DBH），用作实验材料，并且幼苗叶子和茎的解剖结构通过石蜡切片方法研究。通过称量控制土壤中的水含量进行罐实验，即每天下午称重罐，并补充水的消耗，以保持最大田间水能的60％，并保持对照80％的。水控制测试持续约3个月。水控制试验持续约3个月，测量煤气交换参数。结果表明，在干旱治疗下，细胞间CO_2浓度（CI），气孔导度（GS），蒸腾率（TR），净光合速率（PN），水使用效率（WUE）和气孔极限（LS）显着下降随着浇水的控制，PN，GS，TR和LS存在显着差异。观察到的Pn的减少主要是由于在气孔导度下减少，表明除了气孔闭合，光合仪也会部分抑制。

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