Field Treatment Effects on Seed Germination and
Early Growth Traits of Berseem Clover under
Salinity Stress Conditions
Volume 2- Issue 1
F Daneshnia1 and MR Chaichi2*
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- 1Department of Agronomy and Plant Breeding, University of Tehran, Iran
- 2Plant Science Department, Huntley College of Agriculture, California State Polytechnic University, Pomona, USA
MR Chaichi, Plant Science Department, Huntley College of Agriculture, California State Polytechnic University, Pomona, USA
Received: March 06, 2018;; Published: April 11, 2018
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Developing seeds with a high level of tolerance against salinity and water shortage scan guarantee best seedling establishment
in arid and semi-arid agricultural lands. This three-year field, laboratory and greenhouse study proposes the surfactant application
to effectively prevent the detrimental impacts of severe environmental conditions on the development of parental plants. The
germination rate of six parental seeds of berseem clovers (Trifolium alexandrinum L.) from I100 (100% irrigation water)/I100+s
(irrigation water with surfactant, s), I75/I75+s and I50/I50+s treatments are studied under seven osmotic salinity potentials (0, -0.2,
-0.4, -0.6, -0.8, -1, and -1.2MPa). Plants from seeds developed by surfactant in full and moderate limited irrigation (I100 and I75) show
a favorable germination percentage when under saline stress treatments of -0.4 and -0.8MPa. The highest seedling lengths of 10.2
and 10.3cm were achieved for the seeds produced from I75 and I100+s treatments, respectively. Utilizing the surfactant across all field
treatments had a positive effect on the weighted germination index compared to the counterpart treatment. In addition, Seedlings
from seeds treated by surfactant in the germination tests have higher shoot/root ratios, which show the efficiency of surfactant
application in promoting a better root and shoot development under saline/drought stresses.
a) Surfactant application enhanced parental seeds tolerance against salinity conditions.
b) Seeds developed by severely limited irrigation (I50) had a higher G% (75%).
c) Highest seedling lengths (10.2cm) obtained from plants treated by I75+ surfactant treatment.
d) Shoot/root ratio enhanced by surfactant application under salinity stress.
Abbrevations: G%: Germination Percentage; WGI: Weighted Germination Index; PPM: Mg per Liter; PPFD: Photosynthetic
Photon Flux Density; BNS: Basal Nutrient Solution; AT Pase: Adenosinetri Phosphates; MGT: Mean Germination Time
Materials and Method|
Increased Salinity Tolerance of Seeds Under Field