TITLE:
Germination Behaviour of a Perennial Amaranthaceae of North Western Algeria (Oran): Arthrocnemum glaucum (Del.) Ung. Respectively Submitted to Thermal Factor and Salt Stress
AUTHORS:
Amel Sari-Ali Taleb-Bendiab, Amel Bensouna, Faiçal Hassani, Tawfik Ferouani, Hassiba Stambouli
KEYWORDS:
Arthrocnemum glaucum, Halophilic Vegetation, Germination, Salt Stress, Oran (Algeria)
JOURNAL NAME:
Open Journal of Ecology,
Vol.5 No.11,
November
17,
2015
ABSTRACT: In light
of the importance of seeds germinative phase in the progress of later stages of
development of any particular plant species in semi-arid and arid area, it is
essential to study the germinative behavior and to evaluate the tolerance of a
perennial halophyte of Amaranthacaea family, Arthrocnemum glaucum (Del.) Ung. during this crucial phase. A study
is devoted to this species seeds germination, which although it’s a mandatory
halophyte, it’s less tolerant to salt stress in germination’ phase. Germinative
tests are carried out in laboratory, on seeds putted in Petri dishes placed at
different temperatures. They enable us to determine the optimal germination
temperature, which is 40°C while the cold one (5°C) completely inhibits it. The
seeds of Arthrocnemum glaucum show an
optimum germination of 44% in distilled water (NaCl 0 mm) similar to
glycophytes but they differ in their ability to germinate at higher salinities.
Beyond 300 mM germination is completely inhibited. Prior to break dormancy
seeds, a cold treatment at 5°C has been achieved; the germination capacity of
the seeds increases with the duration of the cold treatment. It increases from
30% after 2 weeks of treatment to 80% after a treatment of 27 weeks.