Journal of Stress Physiology &
Biochemistry, Vol. 9 No. 3
2013, pp. 61-71 ISSN 1997-0838
Original Text Copyright (cc) 2013 by Ansari, Azadi, Sharif-Zadeh,
Younesi
ORIGINAL ARTICLE
Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 15
Effect of Hormone Priming on
Germination Characteristics and Enzyme Activity of Mountain Rye (Secale montanum) Seeds under
Drought Stress Conditions
1 Department of Agronomy and
Plant Breeding, Faculty of Agriculture, University of Tehran, Karaj,
Iran. 2 Department of Agronomy and Plant Breeding, Islamic Azad
University, Dezfoul Branch, Iran. 3 College of Agriculture and Natural Resources, University
of Tehran, Iran.
Seed
priming techniques have been used
to increase germination, improve germination
uniformity and seedling establishment under stressed conditions. Seed
priming was used in Rye Mountain (Secale montanum)
to increase seed germination and
tolerance on stress exposure. Rye seeds
were treated with various priming
agents for different time and
temperatures. The effect of priming
was assessed on germination
characteristics on subsequent exposure to drought (PEG -14 bar)
stress for 7 days. Seed priming treatments significantly (p≤ 0.01)
affected, Germination percentage (GP), normality seedling percentage
(NSP), germination Index (GI), germination uniformity (GU), means
time to germination (MTG), coefficient of velocity of germination
(CVG), seedling vigour index (SVI) and coefficient of allometry
(AC). Seed priming with gibberelic acid (GA) and salicylic acid (SA)
(p≤ 0.01) increased germination characteristics as
the compared to the unprimed. Seed
priming with concentrations 25, 50 ppm of GA for 15 h at 10 °C and 25 ppm of SA for 12 h at 10
°C, may be considered as optimal treatment for priming of
Secale montanum seeds in drought stress conditions. Also priming
increased catalase (CAT) and ascorbate peroxidase (APX) as compared to
the unprimed.
