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Biology and management of root knot nematode (Meloidogyne incognita [Kofoid and white] chitwood) infecting carnation (Dianthus caryophyllus L.)

KrishiKosh

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Title Biology and management of root knot nematode (Meloidogyne incognita [Kofoid and white] chitwood) infecting carnation (Dianthus caryophyllus L.)
 
Creator T. R, Kavitha
 
Contributor N. G, Ravichandra
 
Subject vegetative propagation, planting, developmental stages, biological phenomena, fungi, eggs, enzymes, biological development, biological interaction, fumigants
 
Description Carnation is herbaceous perennial flowering plant which is grown
commercially as cut flowers all over the world. Nematodes are one of the
limiting factors that cause serious concern to commercial production of
carnation. A survey undertaken in and around Bengaluru district
revealed the presence of Meloidogyne incognita in all the places. Highest
population (soil and root samples) of M. incognita was recorded in Byatha
village of Nelamangala taluk and from GKVK, Bengaluru. The biology and
life cycle of M. incognita revealed that second stage juveniles invaded the
roots 2 days after inoculation and M. incognita took 25.66 days and
28.00 days to produce galls and egg masses respectively and produce
about 398 eggs/ egg mass. In total, nematodes took 24- 34 days to
complete their life cycle. J2 and adult female measured about 313- 340
μm and 472-494 μm in length and 21-26 μm and 206- 223 μm body
width respectively. Decreased activities of peroxidase, polyphenol
oxidase, phenylalanine ammonia lyase and total soluble sugars and
increased phenol content and catalase activity was recorded in carnation
plants when inoculated with M. incognita. Paecilomyces lilacinus treated
plants reduced nematode population (soil and root), reduced galls and
number of egg masses per root system), maximum plant height, better
root growth, root length and root weight and early emergence of flower
bud in both pre plant and post plant application under polyhouse
condition. Fumigation with metham sodium + neem cake + P. lilacinus
treated plots recorded less number of galls and number of egg masses
per root system, increased plant height, root length, fresh and dry weight
of roots, early appearance of flower bud and increased number of flower/
plant.
 
Date 2016-05-18T11:15:42Z
2016-05-18T11:15:42Z
2012-09-17
 
Type Thesis
 
Identifier Th-10383
http://krishikosh.egranth.ac.in/handle/1/66059
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences, Bengaluru