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Influence of pulsed magnetic field on soybean (<i style="mso-bidi-font-style:normal">Glycine max</i> L.) seed germination, seedling growth and soil microbial population

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Title Influence of pulsed magnetic field on soybean (Glycine max L.) seed germination, seedling growth and soil microbial population
 
Creator Radhakrishnan, Ramalingam
Kumari, Bollipo Dyana Ranjitha
 
Subject Soybean
Glycine max L.
Bacteria
Biochemicals
Fungi
PMF frequencies
Seed germination
Seed leachates
 
Description 312-317
The effects of
pulsed magnetic field (PMF) treatment of soybean (Glycine max L. cv CO3) seeds
were investigated on rate of seed germination, seedling growth, physico-chemical
properties of seed leachates and soil microbial population under laboratory
conditions. Seeds were
exposed to PMF of 1500 nT at 0.1, 1.0 10.0 and 100.0 Hz for 5 h per day for 20
days, induced by enclosure coil systems. Non-treated seeds were considered as
controls.
All PMF treatments
significantly increased the rate of seed germination, while 10 and 100 Hz PMFs
showed the most effective response. The 1.0 and
10 Hz PMFs remarkably
improved the fresh weight of shoots and roots, leaf area and plant height from seedlings from magnetically-exposed seeds
compared to the control, while 10 Hz PMF increased the total soluble sugar, total
protein and phenol contents. The leaf chlorophyll a, b and total chlorophyll were higher in PMF (10 and 100 Hz) pretreated plants, as
compared to other treatments. In addition,
activities of α-amylase, acid phosphatase, alkaline phosphatase, nitrate reductase, peroxidase and
polyphenoloxidase were increased, while β-amylase and protease activities were declined in
PMF (10 Hz)-exposed soybean plants. Similarly, the
capacity of absorbance of water by seeds and electrical conductivity of seed leachates were significantly enhanced
by 10 Hz PMF exposure, whereas PMF (10 Hz) pretreated plants did not affect the microbial population in
rhizosphere soil. The results
suggested the potential of 10 Hz PMF treatment to enhance
the germination and seedling growth of soybean.
 
Date 2013-09-01T13:15:45Z
2013-09-01T13:15:45Z
2013-08
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://hdl.handle.net/123456789/20879
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJBB Vol.50(4) [August 2013]