Lawrence Trevanion, Australia

Diamond and gold dust

October 21, 2015
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Categories: Breeding, Cytology, Daffodil Types, Fertility, Hybridizing, Intermediates, Science, Seedling, Standards

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A few years ago John Hunter posted on Daffnet some comments about gold and silver dusted perianths.

https://daffnet.org/gold-and-silver-dusted-perianths/

He referred to a short article in The Daffodil Journal Vol. 48 #4, June 2012 p.308 about what causes diamond dusting, which in turn was based on a Daffnet discussion.

Across these conversations Brian Duncan conjectured that it is physical and has something to do with the cellular make-up and this was supported by Harold Koopowitz.

John Hunter commented that the effect probably comes from poeticus and that it is easy to find in 3W-W’s but much less so in div. 1,2. He identified Sea Dream 3W-W as example and named Marksman as the best example in 2Y-O.

A couple of years ago I posted a picture of a 2W-W that had diamond dusting in the trumpet.

https://daffnet.org/diamond-dusting-green/

Earlier this year I posted a striking bulbocodium including pictures of its microscopic cell structure.

https://daffnet.org/winter-bulbocodiums/

This supports Brian’s and Harold’s view of diamond dusting. It suggests that an undulating cell structure can scatter sunlight in the way rippling water does. As a matter of interest the trumpet of 13_125 2W-W was put under the microscope. While nowhere near as dramatic as the bulbocodium 15_15VB there are hints of the same feature.

13 12515_15VB

The 2W-W is proving to be consistent in this characteristic and another yellow trumpet has been identified.

14_252 13_125 13_125a

I can see no particular source of this effect in the yellow trumpets. The parents of the the 2W-W, Dayton Lake and Melissa Ann both have the characteristic to a slight extent.

Other whites include Silver Kiwi and a flower that I’m sure is Gough. Gough, bred from Ross Glover’s Mission (Easter Moon x Lady Slim)  hints that these flowers might be useful parents.

Silver Kiwi Gough

I have just obtained Jackson’s Ingenue and it is quite striking. Hopefully fertile sparkling 6W-W’s and 6W-P’s are not too far down the track.

Ingenue

Other pinks include Hopetoun, Brooke Ager and Brian’s Favorite.

Hopetoun Brooke Ager Brians Favorite

 

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One Response to Diamond and gold dust

  1. Harold Koopowitz, California
    Harold Koopowitz, California
    October 22, 2015 at 7:27 am

    Very Interesting Lawrence.