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INDUCTION OF RESISTANCE IN EGGPLANT (Solanum melongena) BY SYNTHETIC ELICITOR MOLECULES AGAINST ROOT-KNOT NEMATODE, Meloidogyne incognita

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Title INDUCTION OF RESISTANCE IN EGGPLANT (Solanum melongena) BY SYNTHETIC ELICITOR MOLECULES AGAINST ROOT-KNOT NEMATODE, Meloidogyne incognita
 
Creator GAWADE BHARAT HANAMANT
 
Contributor Anil Sirohi
 
Subject planting, vegetative propagation, application methods, enzymes, acidity, biological phenomena, organic acids, vegetables, pathogens, organic acid salts
 
Description t-8108
Eggplant, an important vegetable cultivated worldwide, is highly damaged by
the root-knot nematode, Meloidogyne spp. Natural resistance against these
nematodes has not been reported in cultivated eggplant varieties. A number of
molecules have been reported to induce resistance in plants against Meloidogyne
incognita. These elicitor molecules are involved in endogenous signaling and play
role in the resistance to pathogens by inducing pathways producing compounds used
in structural defenses as well as the production of pathogenesis-related proteins.
In our study we used salicylic acid (SA), Rose Bengal (RB) and baminobutyric
acid (BABA), spray and root-dip applications to induce resistance in
eggplant (Solanum melongena) cultivar Pusa Purple Long against M. incognita. Two
enzymes, peroxidase and phenylalanine ammonia lyase, associated with resistance
responses in crop plants against nematodes and other pathogens were also assayed so
as to understand biochemical basis of resistance.
The study results indicated significant increase of plant growth parameters
in eggplant after application of the three chemicals @ 25, 50, 100 and 200 mg/ml.
The best growth parameters were recorded on treatment with SA followed by RB
and BABA. Root dip treatments by SA and BABA were more effective in reducing
root-knot nematode population where as spray treatment by RB proved better in
reducing nematode build-up.
Overall, SA (200 mg/ml) root dip was most effective in inducing resistance in
eggplant as least nematode multiplication was observed. This was corroborated with
increase in peroxidase and phenylalanine ammonia lyase (PAL) enzymes across the
period of 24, 48, 72 and 96 h w.r.t. to control. Both these enzymes are associated
with resistance responses against nematodes and other pathogens in several crops
 
Date 2016-12-17T09:46:19Z
2016-12-17T09:46:19Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/90736
 
Format application/pdf
 
Publisher iari, DIVISION OF NEMATOLOGY