Effect of NaCl,water stress or both on gas exchange and growth of wheat |
| |
Authors: | A M Hamada |
| |
Institution: | (1) Botany Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt |
| |
Abstract: | Responses of wheat (Triticum aestivum L.) to various concentrations of NaCl and levels of drought were followed. With the rise of NaCl or drought, or NaCl and
drought together, growth was retarded. The water content of shoots and roots was mostly unchanged. The chlorophyll and carotenoid
contents were increased in plants subjected to salinity or drought or both. Only high salinity level induced a considerable
decrease in net photosynthetic rate (PN) and dark respiration rate (RD). PN and RD were decreased with the decrease of soil moisture content. The content of Na+ in the shoots and roots of wheat plants increased with increasing salinity or decreasing soil moisture content or both treatments.
Considerable variations in the content of K+, Ca2+ or Mg2+ were induced by the NaCl, drought or both treatments. |
| |
Keywords: | carotenoids chlorophylla chlorophyllb dark respiration rate net photosynthetic rate transpiration rate |
本文献已被 SpringerLink 等数据库收录! |
|