Lets start here, has anyone used this for the quest of yellow, 'William Allen Richardson' Rose
Per HMF, both Ross and Trewallyn have offered it there, so your chances should be pretty good! If importing from New Zealand isn’t too awful, it’s been offered there, too. It can have black spot issues here, but who knows whether your versions of that fungus will recognize its foliage there, or not? One thing I love about it is how it acts as a chameloen in crosses, often expressing the characteristics of the other parent as the more dominant. GACalnana, Golden Angel X Soulieana, Kim Rupert, Muriel Humenick, and Topaz Jewel, will give you good examples of how Golden Angel can express other characteristics very easily.
David, if you search the offspring resulting from WA Richardson, I believe you’ll find that while some lovely tints are early expressed, none of them is very colorfast.
Kim, I know everyone says "if the wheel is not broken why try to fix. I think going backwards I might find something that all before me missed.
Will add more yellows tonight/tomorrow.
Your choice and that makes it valid for you. As long as you proceed with eyes wide open, knowing what have been the issues involved so you know what to expect.
Thanks David and thanks Kim for the information about GA… it is good to know GA is here (I might order one…not urgent, on the backburner and thinking about it…)
Here are some of the choices for my “quest for Yellow”. Some I guess are available to you people over in the USA. Any imput wouild be appreciated. There is asecond installment later.
http://mistydowns.com.au/heritage-old-fashion-bare-rooted-roses-online/
This might work, lets see, first and second installments together,
mistydowns.com.au
http://mistydowns.com.au/heritage-old-fashion-bare-rooted-roses-online/
How loooong is this list (try typing it) LOL!!
0_0
Looking through the 1st gen hybrid ‘Kordesii’… there is ‘Leverkusen’. Has anyone tried this one to make healthy yellows?
David, if you’re a Premium Member on Help Me Find, you can easily search the parentage as well as the offspring of any listed rose to determine what has come from it. Buck’s Prairie Flower is a third generation hybrid from it.
I think Im going to try Toprose x High Voltage this year 
If you want something smaller, you might try ‘Sunshine’ (George Elger × William Allen Richardson). It is more amber than yellow, and the color does fade. Still, it probably hasn’t been overused in breeding.
Le Grice’s ‘Allgold’ has a lot going for it. Hardy, bright yellow, disease resistant foliage. On the downside, the flowers aren’t always as shapely as one might wish.
‘Lamarque’, the reported parent of ‘Chromatella’, seems to carry “dominant non-red” as well as a tendency to yellow. It might be useful in removing the red flush or tinge from amber and yellow-blends. I wanted to try crossing it with ‘Peace’, but never got around to it.
Mansuino (1960) “By crossing the seedling (R. banksiae lutescens x Tom Thumb) with the old Noisette Lamarque I have lately obtained a Banksiae type bearing beautiful deep rose colored flowers. Its open-pollinated seeds gave last year some Miniatures producing in profusion flowers of charming colors.”
The banksiae lutescens x Tom Thumb hybrids (and reciprocals) all had white flowers.
I mention this case only to show that “dominant non-red” does exist.
Karl
Wichurana has that “non red” tendency as does Fedtschenkoana. Even when combined with Dottie Louise and Legacy, Fedtschenkoana bleached virtually all the orange out of Torch of Liberty. This had a fresh flower this morning which was pale greenish pumpkin. Torch of Liberty X DLFED 4.
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That is good to know about Wichurana. I tried a handful of Newport Fairy x different miniatures this spring. I was hoping for health and to retain the miniatures color. Maybe I will just hope for health.
Karl, I have just read that article about ‘Mansuino’ from your site, I like the flower at the bottom.
David,
I thought of you last nite when I visited my son who is moving. In his front yd he had 5 pots of roses I had given him when he moved out, to fill a few empty pots that he had. Two were in a drought induced semi-dormancy coma, a purple-fuchsia colored one was blooming its’ head off, little flowers, but looking quite drought tolerant, another had just bloomed and apparently was not very self cleaning, but had 6-8 brown lolly pop flowers (He apologized for not pruning it), and then the last one I recognized as one that I had debated on whether to let go (I knew they were all in danger of ‘getting lost’ permanently), and I asked him how long it had looked this good. “It always looks this good! except when I take care of it and it looks better!” Well-jump to end of story, I am getting this rose back, I picked two flowers to see if it had pollen, (loaded), and I checked to see what it looked like as a seedling when I got home: it was amber gold. Since then (seedling-2009) it had deepened into a rich golden yellow, it is non fading, and in the two yrs (almost 3) he has had it, the only problem it has had is a little rust in the fall. And it has a citrusy fragrance. The pics are from when I got home, which I remembered to take before I stripped off all the petals. The parents are Moondance X Midas Touch. It has lived its’ full life in a pot, never having been planted out, and still had the ID tag I stick into the pots. I plan to change that and see what it can do planted out.
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Very yummy Jackie, congrats!
Jackie, what can I say apart from beautiful. The other way would be put like this, patience = perserverance. Well done. If by chance, down the track you have some seeds leftover may I obtain some please. The quest is now enhanced.
When breeding for yellow, it is useful to have a look at the plastids (or chromoplasts) that carry the yellow carotene pigment. These vary in size and number as well as in color. Two varieties may appear similar in color, to the naked eye, even though one has numerous small plastids while those of the other are relatively few but deeper in color. Some of the offspring may be deeper yellow than either parent because they have more plastids than one parent, but these are larger than in the other parent.
The chemical nature of the carotene is also important. The Tea-Noisettes manage a deeper shade of yellow than most Teas, presumably because moschata contributes beta-ionone. When this is not degraded and oxidized to make perfume, the ionone ring deepens the color of the carotene.
So, we should forget about a hypothetical “gene for yellow” and look for the independent inheritance of plastid size, plastid number and type of carotene.
MacFarlane (1892) discussed the inheritance of these factors in the orchid hybrid, Masdevallia Chelsoni. “In [the hybrid] the number, size, and tint of the chromoplasts, as also the shape and size of the cells which contain them, is a very fair mean between those of the parents.”
Of course, the inheritance of these three factors will be much more complicated where the parents are not species.
Karl