Black iris will all have yellow, orange or pink under the
anthocyanin. The darkest you can get with out it is a blue-purple. To
get black you also need the Ae gene, which gives you the AVI which are
a solid clumps of undissolved anthocyanin in the vacuole. Normal blue
is only dissolved anthocyanin in the vacuoles, no solid clumps.

Chuck Chapman.

N-----Original Message-----
From: Linda Mann <l*@lock-net.com>
To: iris-photos <i*@yahoogroups.com>
Sent: Mon, Apr 30, 2012 8:20 pm
Subject: [iris-photos] Re: Further to the Chuck's Botany Lesson

Â
& I hot water soaked falls from 3 purples, all more or less the same
shade, but varying darkness. All three had some yellow left after the
soak - lightest purple (SULTRY MOOD) had the least (and the lightest
blue soak water), middle (STAR GATE) was middle for both, and the
darkest purple, near black one (seedling from ROMANTIC EVENING) was a
strong yellow underneath all that near black (very dark blue soak
water).

I used the same volume of water & same sized piece of fall for each

Fun.

Linda Mann