Evaluation of germination parameters of Scrophularia striata under water and salinity stresses at different temperatures

Karavani, Bahram; Tavakkol Afshari, Reza; Majnoon Hosseini, Naser; Mousavi, Amir

doi:10.22059/ijfcs.2014.51905

Evaluation of germination parameters of Scrophularia striata under water and salinity stresses at different temperatures

Document Type : Research Paper

Authors

Bahram Karavani ¹

Reza Tavakkol Afshari ¹

Naser Majnoon Hosseini ¹

Amir Mousavi ²

¹ college of agriculture and natural resources

² Department of agronomy, Tarbiat Modaress university

10.22059/ijfcs.2014.51905

Abstract

Germination stage is an important stage of plant growth stage that often is affected by environmental stress including water and salinity stresses including drought and salinity. In order to study germination characteristics of Scrophularia striatain water and salinity stress conditions at different temperatures an experiment was conducted. Temperatures regimes included 5, 10, 15, 20, 25, 30 and 45°C. For each temperature the treatment, for salinity and water stress was seven potentials (zero, -2, -4, -6, -8, -10 and -12 bar) of NaCl and seven potentials (zero, -2, -4, -6, -8, -10 and -12 bar) of PEG. Results showed that increasing water and salinity stress decreased significantly germination rate, germination percentage, plumule and radicle length. The minimum decrease of germination characteristics in stress was observed at 25°C. Results showed that optimum temperature for this plant is 28.69°C.

Keywords

drought and salinity stress

germination

Scrophularia Striata

temperature