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Extra floral nectar-secreting organs on Lima bean (Phaseolus lunatus) petiole. Extra florel nectar (EFN) is produced by a plant infested by spider mites (Tetranychus urticae).
This indirect chemical plant defence attracts natural enemies of spider mites and other herbivores.
Also volatile emissions of injured neighbouring plant induce EFN production in healthy plants. Atmospheric ozone can disturb this communication.
Read more from this link.
Full EXIF Info | |
Date/Time | 06-Sep-2007 13:24:32 |
Make | Nikon |
Model | NIKON D40X |
Flash Used | No |
Focal Length | 105 mm |
Exposure Time | 1/60 sec |
Aperture | f/20 |
ISO Equivalent | 100 |
Exposure Bias | -0.33 |
White Balance | |
Metering Mode | multi spot (3) |
JPEG Quality | |
Exposure Program | aperture priority (3) |
Focus Distance |
ŠJarmo Holopainen