Abstract
Salinity is an abiotic stress which has harmful effects on germination of many plants. Therefore, high germination rate and vigorous early growth under salty soils is preferred. Seed priming is a way to increase salt tolerance of plants. An experiment was conducted to investigate the effect of seed priming on germination of milk thistle under salinity condition. The treatments were 4 levels of seed priming (no priming, distilled water as hydro priming and 0.5 and 1.0 mM salicylic acid) and 5 levels of salinity (0, 40 and 80 mM NaCl and 40 and 80 mM CaCl2). The experiment arranged as a factorial in a completely randomized design (CRD) with three replications. Results showed that salinity decreased germination percentage and germination rate to about 16 and 32% in 80 mM CaCl2 level compared to control, respectively. The highest mean germination time (5.7 day) were belonged to 80 mM CaCl2. Radicle and plumule length significantly decreased by 80 mM NaCl and 40 and 80 mM CaCl2. The lowest seedling weight and seed stamina observed in 80 mM CaCl2. 0.5 mM salicylic acid improved all traits except mean germination time as compared to control. Salicylic acid (0.5 mM) improved radicle length under 0, 40 and 80 mM NaCl salinity levels as well as increased plumule length at the 0 and 40 mM NaCl salinity conditions.
Highlights
Mg, Ca, Na and anions such as NO, HCO, SO, Cl) in water and soil (Tanji, 1995)
Data presented in Tab. 2 show that Germination percentage (GP) was significantly reduced by 80 mM CaCl2 salinity which was 16.3 % less than that of control
The lowest values of germination rate (GR) belonged to the 80 mM CaCl2, 40 mM CaCl2 and 80 mM CaCl2 by 32.5, 15.6 and 11.9% decreases compared to control, respectively
Summary
Seed germination and seedling Milk thistle (Silybum marianum L.) is an annual or growth are the most sensitive stages in the biological life cycle biannual plant of the Asteraceae family. This plant is known of the plants. Soil salinity as one of the main factors limit agricultural Seed priming as a pre-sowing technique can improve production and have been affected almost 80 million radicle emergence, germination rate, germination vigor, hectares of arable lands in arid, semi-arid and seaside regions seedling establishment and yield by making changes in of the world
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
