Home |
Search |
Today's Posts |
#1
|
|||
|
|||
Plant disease ID ?
I found two plants in my garden with leaves that have white stuff on
them. Under the microscope, it seems that the white stuff is actually asome change of the leaf material... Also under the scope I find very small, oval things. A lot of them. They look like small eggs, only almost perfectly oval. They seem translucent. I held my digital camera against the ocular of the scope and produced 4 pictures. They are not very good, but they may give an impression. magnification is 200x or 400x (don't know exactly anymore) http://www.terwiel.com/diversen/DSCN0637.JPG (the white bubbles) http://www.terwiel.com/diversen/DSCN0638.JPG http://www.terwiel.com/diversen/DSCN0639.JPG (vague, in the center 2 bubbles) http://www.terwiel.com/diversen/DSCN0640.JPG I thought they may be louse/aphid eggs. any suggestions ? Erik |
#2
|
|||
|
|||
Plant disease ID ?
Erik,
This sounds very much like powdery mildew, a quite common plant disease caused by an ascomycete fungus. The oval things then are the ascospores of the fungus. They get air-borne and so manage to reach new hosts. Best -- Jan Osiris wrote: I found two plants in my garden with leaves that have white stuff on them. Under the microscope, it seems that the white stuff is actually asome change of the leaf material... Also under the scope I find very small, oval things. A lot of them. They look like small eggs, only almost perfectly oval. They seem translucent. I held my digital camera against the ocular of the scope and produced 4 pictures. They are not very good, but they may give an impression. magnification is 200x or 400x (don't know exactly anymore) http://www.terwiel.com/diversen/DSCN0637.JPG (the white bubbles) http://www.terwiel.com/diversen/DSCN0638.JPG http://www.terwiel.com/diversen/DSCN0639.JPG (vague, in the center 2 bubbles) http://www.terwiel.com/diversen/DSCN0640.JPG I thought they may be louse/aphid eggs. any suggestions ? Erik |
#3
|
|||
|
|||
Plant disease ID ?
thnx..
on second thought they might be too small to be eggs... They don't seem to have any inner structure either... I found some other pics of mildew on the net, and it looks the same. On Thu, 07 Sep 2006 15:29:20 +0200, Jan De Laet wrote: Erik, This sounds very much like powdery mildew, a quite common plant disease caused by an ascomycete fungus. The oval things then are the ascospores of the fungus. They get air-borne and so manage to reach new hosts. Best -- Jan Osiris wrote: I found two plants in my garden with leaves that have white stuff on them. Under the microscope, it seems that the white stuff is actually asome change of the leaf material... Also under the scope I find very small, oval things. A lot of them. They look like small eggs, only almost perfectly oval. They seem translucent. I held my digital camera against the ocular of the scope and produced 4 pictures. They are not very good, but they may give an impression. magnification is 200x or 400x (don't know exactly anymore) http://www.terwiel.com/diversen/DSCN0637.JPG (the white bubbles) http://www.terwiel.com/diversen/DSCN0638.JPG http://www.terwiel.com/diversen/DSCN0639.JPG (vague, in the center 2 bubbles) http://www.terwiel.com/diversen/DSCN0640.JPG I thought they may be louse/aphid eggs. any suggestions ? Erik |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
HELP: Tomato Disease (Wilt disease?) | North Carolina | |||
simple guide to plant disease | United Kingdom | |||
Mad Cow Disease / Mad Deer Disease | sci.agriculture | |||
plant disease??? | Freshwater Aquaria Plants | |||
New thread. Mad Cow Disease / Mad Deer Disease | sci.agriculture |