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Seed-borne pathogen Virus Viroid and Nematode, image, image, image, image,…
Seed-borne pathogen Virus Viroid and Nematode
symptoms
Mosaic
Stunting
Yellowing
Vein clearing
Ring spots
Plant deformation
Important viruses
Bean common mosaic virus
(BCMV)
Soybean mosaic virus
(SMV)
Barley stripe mosaic virus
(BSMV)
Cucumber mosaic virus
(CMV)
Squash mosaic virus
(SqMV)
Tomato brown rugose fruit virus
(ToBRFV)
Pepper mottle mild virus
(PPMV
Lettuce mosaic virus
(LMV)
Detection viruses
Biological test
Indicator plant
Virus particle
Serological test
Polymerase Chain Reaction (PCR)
Important Nematode
Seed gall nematode
Anguina tritici
wheat, rye, grass
Infective stage, J2
survive nematode in gall up to 40 years
Stem and bulb nematode
Ditylenchus dipsaci
Vicia faba
Ditylenchus destructor
Soybean cyst nematode
Aphelenchoides besseyi
Detection nematode
Baermann funnel technique
Important Viroids
Tomato chlorotic dwarf viroid
(TCDVd)
Potato spindle tuber viroid
(PSTVd)
Tomato apical stunt viroid
(TASVd
Pepper chat fruit viroid
(PCFVd)
Culumnia latent viroid
(CLVd)
Detection
RT-PCR (reverse transcription-polymerase chain
reaction)
comparison in data base
Seeddisorders
Hollow heart-dry conditions
Marsh spot-Manganese
Manganese deficiency
Silkcut of corn
