Volume 1, Number 1 (2-2013)                   DEEJ 2013, 1(1): 11-20 | Back to browse issues page

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Salinity is one of the main osmotic stresses on growth and production of plants in arid limit.
The use of salt endurance species in the restoration and development rangelands , particularly
in arid is very important.Given the importance of annual medics in the restoration and
development rangeland and the low awareness level of understanding of this species to
salinity, This study aimed to evaluate the endurance to salinity during germination were
annual medics. Salinity at the germination stage for the creation of Sodium chloride (Nacl)
and salinity (0 (control), 0/25, 0/5, 0/75, 1 and 1/25 MPa) was used. Components, including
germination percentage, speed and uniformity of germination and seedling growth
components, including the shoot and root Length , dry weight root and shoot And their ratio
under salt stress was being investigated. The results showed that with increasing
concentration of salt in the germination percentage, speed and uniformity germination shoot
and root Length and dry weight decreased in both species. The significant differences in the
percentage of germination, root and shoot dry weight in salinity were observed among
species. In this study, the increased levels of salinity, germination percentage decreased with
the decrease in the value of M. scutellata the control treatment to 1/25 MPa Nacl treatment
was reduced by 99 percent. M. polymorpha reduction of 96% in comparison to the control
was observed in 1.25 MPa. The results showed that the species M. polymorpha and
M.scuteellata is more resistant to salinity at the germination stage.

Type of Study: Research | Subject: General
Received: 2012/02/11 | Accepted: 2012/08/26 | Published: 2013/02/3

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