Impact of heat on patterns

The first picture of 36312 is on a normal day. A couple of days later when temps went into the 90's, the white/ivory "blobs" started showing up on seedlings or were more clearly defined/accentuated. Picture 2 is 36312 the morning after the hot day. Next is 36912, 37212, 37312, 38012. The last one is 27812, shown before, but this is the most of this kind of look it has shown. I sure hope they do this outside, and that they have decent branching. These are 12 month seedlings inside.