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Studies on the effect of radiofrequency waves on rootknot nematode, Meloidogyne incognita

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Title Studies on the effect of radiofrequency waves on rootknot nematode, Meloidogyne incognita
M Sc
 
Creator SIRISHA TADIGIRI
 
Contributor Gautam Chawla
 
Subject Radiofrequency, Meloidogyne incognita, Polianthes tuberosa
 
Description T-8692
Thermal death kinetics of root-knot nematode, Meloidogyne incognita was
determined using a hot-water bath at temperature range of 45-60 oC. Minimum time
required to kill 100 % second stage juveniles (J2s) decreased with the increase in
temperature; it was 2 min for 55 °C and 1 min for 60 °C treatments. Minimum
hatching of root-knot nematode eggs (1.02 %) was recorded at 60 °C for 4 min
treatment. Treatment of egg masses and J2s to three radio frequencies (RF) viz., 13,
27 and 42 MHz showed that the effect of 27 and 42 MHz on inhibition of the egg
hatch and mortality was statistically at par and better than that of 13 MHz treatment.
The thermogram of tuberose after RF heating at 27 MHz showed that the rise of
temperature was not uniform throughout the bulb tissues. Often the rise of
temperature was more in the narrower part (point of emergence of shoot) of the bulbs
compared to the broader equatorial region. RF heating also resulted in the higher
temperature at the centre of the bulb compared to its peripheral regions. The bulbs of
tuberose, treated at 27 MHz RF (1.2 kW power) for 8 and 10 min showed delayed
germination and poor plant growth compared to untreated bulbs. Maximum 85 %
inhibition in hatching of eggs recovered from RF-treated infected-bulbs of tuberose
was achieved.
 
Date 2016-09-09T18:46:42Z
2016-09-09T18:46:42Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76328
 
Format application/pdf
 
Publisher IARI, DIVISION OF NEMATOLOGY