This seems to be a Phytoplasma disease - not virus.

See the following paper for details of detection

http://ipm.ifas.ufl.edu/pdfs/Little_Leaf.pdf

http://www.apsnet.org/publications/phytopathology/backissues/Documents/1995Articles/Phyto85n02_169.PDF

hi

i agree with Mr dipiyoti,s detection. in this picture flowers of tomato are swollen that be called big bud this disease is caused by phtoplasma.

I agree, seems to be a phytoplasma diseases. Dong et al., 2013 http://link.springer.com/article/10.1007%2Fs10327-013-0463-5#page-1

I agree with Mr Dipiyotis. Floral abnormalities in your images look like stolbur phytoplasma-infecteing tomato plants. SeePracros et al., Mol Plant Microbe Interact. 2006 Jan;19(1):62-8.

Stolbur phytoplasma

yes  it is, this is viral  infection  known  big bug  . viruses can cause enlargement of the leaflike flower parts (sepals) surrounding the base of a blossom in plants of the nightshade family. The tomato big-bud virus appears to affect the sepals of the tomato flower rather specifically. These structures enlarge greatly under the influence of the virus and fuse to form huge 

Hi Alex Ignatov, please use English. Don't use any other language. It is a platform consumable to all researchers over the world.

Hi, although phytoplasma cause disease like this symptom, but in my experience that I evaluate resistance different tomato cultivars to TYLCV, I see this symptom in some cultivars, if you have whiteflies in that farm, may it is cause by Tomato yellow leaf curl virus. 

Based on the discussions, you can do the following things.

1. Do Electron microscopy of the infected leaf sample and check for presence of viruses. There are mosaic symptoms on leaf which is one of the diagnostic feature of viral infection

2. Check with primers of phytoplasma or primers of Tomato leaf curl virus for the presence using lnfected plant sample DNA.

http://apsjournals.apsnet.org/doi/pdf/10.1094/MPMI-19-0062

Please refer to the article in the link provided above where in the pictures of the phytoplasma infection such as sepal hypertrophy, leafy structure of sepals, (Overdeveloped petioles which is also noticed in one of the posted picture ) are given. That could answer your query.

It looks like the typical symptom of phytoplasma infection, probably stolbur phytoplasma. I recommend to strat with phytoplasma detection - isolate DNA and do nested PCR with P1/P7 primers followed by R16F2/R2, product ca 1200bp. If negative look for viruses.

I agree, voting for phytoplasma, likely stolbur (Candidatus Phytoplasma solani)

Sure, phytoplasma

I agree with the view of Dana, you must perform a screening test for presumptive affirm or reject the hypothesis of a phytoplasma.

Agree, does not look like virus but more like phtoplasma

I screened reaction of tomato accessions to TYLCV and I saw these symptoms in some accessions. so I ask you to check your plants for Tomato yellow leaf curl virus.

It look like phytoplasma.

These are symptoms of tomato big bud disease.

These symptoms look like the viral disease of tomato. It may be due to the tomato leaf curl virus. or new phytoplasma disease looks like sesame phyllody and the little leaf of brinjal. Recently, these symptoms observed in tomato fields in India.

It looks begomoviruses infection.if there is whiteflies