Potato problem

[Paulgul]

I have a problem with some of the potatoes I grew last year, they have a dark ring around just below the skin. I've posted a picture in my gallery.
The variety is Wilja
Any suggestions of what the problem is?
Thanks,
Paul

[Paulgul]

[kevinhalfplot]

we need a passwoed to see them   :-[ :-[

[Lauren S]

we need a password to see them   :-[ :-[

Well, I've never clicked on a gallery and seen a password needed before  ::)

[Paulgul]

The password is acreshort
This forum is new to me, I thought the password was for me if I wanted upload pictures or delete them. If everyone has to have the password, whats the point.
Still not to worry.
Paul

[Kea]

No can't see your photo either but could either be damage due to cold or ring rot. The later means the tubers got too cold and the later is a bacterial disease.

[Kea]

Ok I can see it now. That could also be net necrosis caused by the leaf roll virus...for some reason I read Dark ring and turned it into black ring!

[Kea]

i think it is defintely Net necrosis, if you cut a tuber in the other direction at the stem end....that is the end opposite the rose where all the buds are....you should have a pattern of dots and streaks in the vascular tissue. It's transmitted by virus and there are some potato varieties that are less susceptible. http://www.potato.org.uk/department/knowledge_transfer/pests_and_diseases/ref.html?item=50

[Paulgul]

Kea, thanks for the reply, that link was for leaf roll (is that the same) and says 'generally no tuber symptoms'

[Paulgul]

To reply to myself, I've done a google search for Net necrosis and found some tuber picures looking very similar to mine, thanks again.

[Paulgul]

I've received a pm from another chap who suggests it may be a chilling problem in storage. He gave me this link
http://vegetablemdonline.ppath.cornell.edu/factsheets/Potato_Detection.htm

referring to photo 8b, the article mentions it can be confused with Net necrosis, as the potatoes are stored in a garden shed and with the low temperatures we've been having this is a possibility

Paul

[Kea]

Did they have the dark ring before storage? Cold damage was my first thought as you see it a lot in supermarket bought potatoes when they store them too cold.

[Paulgul]

Did they have the dark ring before storage?

Don't know that, we've only just started using this particular variety in the last week or so