Hi everyone, I’ve posted a few times and by now I’d like to thank everyone for their insight and helpfulness.
I’m located in Johannesburg and in the last year I have started collecting and hybridising roses.
I started with embryo extraction, and my first seeds are currently cold stratifying.
As far as roses go, in South Africa there is only one large scale nursery that has international relationships with other rose growers, and that is Ludwig’s Roses. A large portion of their roses are from Kordes Rosen and Delbard. They also hybridise and release their own roses, but from what I can see they aren’t as active as other overseas nurseries. From what I can see on HMF some of the roses they sell are only here in South Africa, I’ll add a photo to the roses that might be unknown/less common.
In my collection I have:
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I’m thinking of doing a golden wings and Stanwell perpetual cross next Summer. I think I’ll have to grit my teeth and just do the embryo extraction as it is a double spin cross.
If I can get the Stanwell shape and the colour of golden wings I think it would be a good combo.
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Nice introduction, and I like your cross idea. You might not have that much trouble with germinating seed from ‘Stanwell Perpetual’, and unless you’ve really worked out the technique for so-called “embryo rescue,” there seem to be some significant risks of damage and loss involved with that method. I would probably try conventional whole-achene stratification and sowing first.
Stefan
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Kordes and Delbard are two great breeding houses imho. Having said that, of your roses, I think Kardinal Kolorscape /Red Ayoba is the only one I grow: Great color and remarkable health with very nice foliage, and seemingly rather drought tolerant, but not a willing momma, and her dark velvety blooms don’t fare well in the heat of high summer. (Might be due to chili thrips though.) How has your experience been with this one?
Welcome! And have fun!
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Thank you! I’ve observed the same thing while doing embryo extraction. Often times you lose more than you gain, and out of those that you successfully remove some might not even have any radicles. And you need to work like it’s surgery, I’ve lost quite a few viable embryos to later stage infections.
I was on the fence but I’ll definitely try cold stratifying some of those Stanwell X Golden Wing seeds. I’ll keep you guys updated
Thanks @philip_la! So far KK isn’t that good as a mother, I might get 5 developed seeds per hip surrounded by hair like achenes. The pericarp of the majority of the developed seeds are almost translucent and the embryos are pitch black and dried out. At most I might get one maybe two living embryos per hip if I do embryo extraction.
But as a pollen parent it seems totally fine. I crossed it with pure magic and I got 37 achenes.
If they are viable I don’t know, I’ve decided to cold stratify them, so I’ll have to wait and see.
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I have suspected it might be a triploid.
One of the nice things about using pollen (as you probably know already) is that you have a decent possibility of an unreduced gamete amid the hunreds of pollen grains that might successfully pair with the oocyte of a strong mother to make seeds. Using the same plant as a mother however gives relatively fewer oocytes to potentially be un-reduced.
As Kim will tell you, there are triploids that don’t fuss about pairing and will be fertile as seed parents.
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I wasn’t aware of that, in that case I’ll make sure to use kk and Raubritter pollen in as many crosses as I can.
My first seedling’s progress so far. First true leaves are out
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I bought a centifolia moss today, but the leaves seem a bit odd. They look like something between a rugosa and rubiginosa. Can anyone confirm that the leaves look like those of a centifolia moss?
Some photos of Dainfern Passion
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I mean leaves can differ quite a lot moss to moss so I wouldn’t worry too much. Check which one you have and look on helpmefind to see if people’s images have leaf in them
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Very intresting South Africa? cutting, the leaves look like those of a maple tree
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My ‘Cecile Brunner’
is constantly throwing leaves like that. Right now, the “maple leaf” effect is about 25% of the total foliage. I have no idea why.
I wonder if it’s a sport? Is it only doing it on certain branches? However from a botanical perspective that drastic a leaf change is pretty odd outside viruses and such.
Tri-lob foliage happens on the Cecile Brunner variants as well as Perle d’Or, perhaps others? I’ve observed it on those. Those must be the bracts on flowering sprays. They don’t have stimulus making them not resemble rose foliage.
So this is the current progress of my first seedling. Is the leaf growth normal? It looks a bit stacked to me. Could this be a sign that the light is too bright?
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Very normal growth! That close-packed series of leaves creates the base of your rose, where all the basal shoots will come from. Once they create enough photosynthesizing matter, it will rise up and give the internodal growth you’re expecting.
Patience. All is well.
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If you were observing these wit Ralph Moore, he would have commented something like, “The genes are sorting themselves out”. They look good to me. Congratulations!
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Pure magic remains my favourite. Look at the lovely white petals with the slight yellow centre. The petals are slightly thicker than your average rose.
As far as the bush goes, it has a very nice shade of green and it is prone to making massive flower spikes.
If I don’t stop myself I’ll use Pure magic in every crossing I do
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