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Pre-treatment of seeds with static magnetic field ameliorates soil water stress in seedlings of maize (<i style="">Zea mays </i>L.)

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Title Pre-treatment of seeds with static magnetic field ameliorates soil water stress in seedlings of maize (Zea mays L.)
 
Creator Anand, Anjali
Nagarajan, Shantha
Verma, A P S
Joshi, D K
Pathak, P C
Bhardwaj, Jyotsna
 
Subject Static Magnetic Field
Soil Moisture Stress
Leaf Water Relations
Antioxidant Enzymes
 
Description 63-70
The
effect of magnetic field (MF) treatments of maize (Zea mays L.) var. Ganga Safed
2 seeds on the growth, leaf
water status, photosynthesis and antioxidant enzyme system under soil water
stress was investigated under greenhouse conditions. The seeds were exposed to
static MFs of 100 and 200 mT for 2 and 1 h, respectively. The treated seeds
were sown in sand beds for seven days and transplanted in pots that were
maintained at -0.03, -0.2 and -0.4 MPa soil water potentials under greenhouse
conditions. MF exposure of seeds significantly enhanced all growth parameters,
compared to the control seedlings. The
significant increase in root parameters in seedlings from magnetically-exposed
seeds resulted in maintenance of better leaf water status in terms of increase
in leaf water potential, turgor potential and relative water content. Photosynthesis, stomatal conductance and
chlorophyll content increased in plants from treated seeds, compared to control
under irrigated and mild stress condition. Leaves from plants of
magnetically-treated seeds showed decreased levels of hydrogen peroxide and antioxidant
defense system enzymes (peroxidases, catalase and superoxide dismutase) under
moisture stress conditions, when compared with untreated controls. Mild
stress of -0.2 MPa induced a stimulating effect on functional root parameters,
especially in 200 mT treated seedlings which can be exploited profitably for
rain fed conditions. Our results suggested that MF treatment (100 mT for 2 h
and 200 for 1 h) of maize seeds enhanced the seedling growth, leaf water
status, photosynthesis rate and lowered the antioxidant defense system of
seedlings under soil water stress. Thus, pre sowing static magnetic field
treatment of seeds can be effectively used for improving growth under water
stress.
 
Date 2012-02-14T12:29:01Z
2012-02-14T12:29:01Z
2012-02
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://hdl.handle.net/123456789/13593
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJBB Vol.49(1) [February 2012]