Ralstonia: Symptoms on Geraniums

Ralstonia: Symptoms on Geraniums

Wilting and yellowing symptoms of Ralstonia solanacearum race 3 biovar 2
seen on zonal geraniums,
Pelargonium x hortorum
(Click on image for larger view) 

early wilting symptoms

Early wilting symptoms
Image: The Wisconsin Department of Agriculture, Trade
and Consumer Protection 

 

advanced wilting symptoms

More advance wilting and abnormal leaf yellowing symptoms (chlorosis)
Image: The Wisconsin Department of Agriculture, Trade and Consumer Protection

 

yellowing symptoms

Abnormal yellowing symptoms
Image: The Plant Disease Diagnostics Clinic, University of Wisconsin-Madison/Extension

 

Group of geraniums showing wilting symptoms
Image: The Wisconsin Department of Agriculture, Trade and Consumer Protection

 

Wilting and mortality of Americana Cherry Rose variety
File photo

 

Yellowing symptom (chlorosis) of Americana Pink II variety
File photo

 

Wilting and mortality (necrosis) of Bright Red variety
File photo

 

wilting, chlorosis and necrosis on geranium

Wilting, chlorosis and necrosis due to Ralstonia solanacearum infection of geranium
File photo

 

One plant has been killed by Ralstonia solanacearum and another is showing early wilt symptoms in this 10-inch basket
File photo

 

unrooted cutting showing necrosis

These unrooted cuttings show necrosis of the lower leaves and black stem necrosis due to infection by Ralstonia solanacearum
Image: Margery Daughtrey, Cornell University

 

geranium leaf showing wilting

A geranium with several leaves showing wilting with associated chlorosis and necrosis due to Ralstonia solanacearum
Image: Margery Daughtrey, Cornell University

 

A close up of the chlorosis and necrosis that develop in geranium leaves wilting from Ralstonia solanacearum infection
Image: Margery Daughtrey, Cornell University

 

   
Symptoms of Bacterial Blight caused
by Xanthomonas pelargonii on geranium ,
Pelargonium
spp.
bacterial blight wilting

Wilting symptoms caused by Bacterial Blight, Xanthomonas pelargonii, are indistinguishable from Ralstonia solanacearum wilting.
Image: Margery Daughtrey, Cornell University

 

baterial blight
Bacterial Blight, Xanthomonas pelargonii, also causes characteristic spotting of leaf tissue
Image: Margery Daughtrey, Cornell University

 

 

 

 

 

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