Powdery mildew or not?

Hey everyone,

I have two plants in an outdoor grow.
The two are side by side almost touching and one of them started to get kinda of a white coating on the leaves.

I'm an experienced all around gardener and have seen powdery mildew many times on zuccini, cucumber and other plants.

It does not wipe off and is uniform instead of patches...

This time though i'm really not sure what it is and i couldn't find anything like it on the net.

Can anyone help me figure this out?

* 4th-5th week of flower The plant is an F2 regenerated of my breeding stock.

bump...really??

No one ever encountered this problem before??
Any ideas?
The plant is doing great, it's just that i want to know for sure 'cause if i can't smoke it i'll make hash outa her.

does not look like mildew. do you have a pic that's not so close up? maybe a shot of the whole plant or the effected area.

not for the moment, but will post one ASAP.

It's kinda on all the older and biggest fan leaves and a little bit on the smaller ones.

Other than that, the plant is doing great no other obvious signs of any problems, it smells great...good steady growth...
Plus I've been seeing this for about 1 month and the next plant (not same genetics) is touching it and doesn't have anything like the white coating of her neigbour.

Can it be just a genetic variation? it's a regenareted F2 plant that was a cross between a male friesland and an unknown female.
It looked promising inside so i wanted to keep the same in outside..I did have a little trouble with N defienciecies in the middle of flowering indoors thought.

Thoughts anyone?