...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Revista rvore >Sele??o precoce de clones de eucalipto para ambientes com disponibilidade diferenciada de água no solo: rela??es hídricas de plantas em tubetes
【24h】

Sele??o precoce de clones de eucalipto para ambientes com disponibilidade diferenciada de água no solo: rela??es hídricas de plantas em tubetes

机译：桉树克隆的早期选择土壤中有区分水可用性的环境：与管中植物的水关系

获取原文
   

获取外文期刊封面封底 >>

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

摘要

This study was undertaken to identify physiological characteristics of cuttings from five eucalypt clones, growing in small plastic tubes (60 mL) to subsidize early selection for planting in sites with varying soil water availability. Stomatal conductance, leaf transpiration, leaf water potential and net photosynthesis of plants maintained fully irrigated and under water deficit were studied. The clones 1250 and 1260 presented reduction in stomatal conductance and leaf transpiration in water stressed plants, which maintained high leaf water potential. On the other hand, the clones 0321 and 1277 kept exhibiting high leaf stomatal conductance and transpiration and presented sharp decrease in leaf water potential under water stress condition. These two clones presented the highest net photosynthesis after several drying cycles. The clones 1277 presented a significant leaf abscission after the first drying cycle and a prompt recover after being re-watered, which indicates that this clone may tolerate dryer environments.
机译：本研究旨在鉴定来自五种桉树克隆的扦插的生理特性，生长在小塑料管（60毫升）中，以补贴在不同土壤水可用性中种植的早期选择。研究了气孔电导，叶片蒸腾，叶水潜力和植物的净光合作用，维持完全灌溉和水缺损。克隆1250和1260呈现在水胁迫植物中的气孔导率和叶片蒸腾的降低，这保持了高叶水势。另一方面，克隆0321和1277保持表现出高叶气孔导度和蒸腾，并在水胁迫条件下呈现叶水潜力的急剧下降。这两个克隆在几次干燥循环后呈现最高的净光合作用。克隆1277在重新浇水之后呈现了在第一干燥循环之后的显着叶片脱落，并且在重新浇水后迅速恢复，这表明该克隆可以耐受干燥环境。

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