M. Taghvaei, M. Ghaedi,
The Effect of Osmotic Conditions on Germination of (Haloxylon aphyllum L.) Seeds and Recovery Under Water Stress,
Agricultural Journal,
Volume 9,Issue 3,
2014,
Pages 167-172,
ISSN 1816-9155,
aj.2014.167.172,
(https://makhillpublications.co/view-article.php?doi=aj.2014.167.172)
Abstract: Haloxylon aphyllum L. is a an important perennial plant
for conservation in Asian, especially Iran dune desert. The effects of water
potential on germination and recovery responses after transfer to distilled
water and osmotic potential were studied in Haloxylon aphyllum L. seeds
collected from Fars (neirize) dune desert located in the elevations of 1632
m.a.s. in center of Iran in Asian desert. Treatments included 2 pretreatment
levels (0, -1.2 MPa) and 6 levels of polyethylene glycol PEG (6000) potentials
(0, -0.3, -0.6, -0.9, -1.2, -1.5 MPa), using a completely randomized block design.
Result showed that osmotic potential had a significant effects on germination
percentage, germination rate, seedling length and seedling dry weight. Total
of them decreased with increased osmotic potential. Recovery of seed increased
of seedling characteristics after being transferred to distilled water and osmotics
potential. As prime witht Poly Etilen Glycol (PEG) concentration increased threshold
to osmotic potential.
Keywords: Germination;Haloxylon aphyllum L.;osmotic conditions;polyethylene glycol;water stress;recovery