Effects of osmopriming on seed germination of canola (Brassica napus L.) under salinity stress.
Canola has good yield and performance in weak and saline soils that other oil crops can not be cultivated in them. Performance and production of this crop can be improved by increasing the vigor of its seeds. Priming is one of the techniques for enhancing seed vigor under stress condition. Pretreatment of seeds in osmotic solutions is called osmopriming, which is used to increase the seed moisture content and speed of germination. In this study, seeds of three varieties of canola (SLM046, Okapi and Licord) were primed in osmotic solutions and then were germinated under salinity stress at laboratory conditions. Osmotic solutions were made by polyethylene glycol 6000 in osmotic potentials of -10, -12, -14, -16 and -18 bar for 24 h. NaCl solutions with electrical conductivities of 0, 6, 12 and 18 ds/m were used to make salinity stress. Results of this study showed that osmopriming could be used to increase the performance of seeds under normal and salinity stress.
Ehsanfar
S
S
Tarbiat Modarres University, Tehran, Iran. s_ehsanfar@yahoo.com
Modarres-Sanavy
S A M
SA
Tavakkol-Afshari
R
R
D000222:Adaptation, Physiological; D029688:Brassica napus / Q000254:growth & development / Q000502:physiology*; D018525:Germination; D009997:Osmotic Pressure; D012639:Seeds / Q000254:growth & development / Q000502:physiology*; D012965:Sodium Chloride / Q000378:metabolism*; D013997:Time Factors; D014867:Water / Q000378:metabolism*
D014867:Water; D012965:Sodium Chloride