Rose Hybridizers Association Forum

Though this report deals with humans, the underlying principle may well apply to plants. Therefore, two cuttings from a seedling may become epigenetically distinct, more so the older they become, and even more so when they have been exposed to different environmental histories. In past centuries it ...

I remembered that this subject was discussed on rec.gardens.roses back in the '90s. Here's a snippet I found today. Some of the "degradation" described could be the result of poor propagation practices, and might be repaired by careful bud selection ... if anyone wants to make the effort. Also, I ad...

I have obtained several rose books for a Christmas gift. One of them mentions the concept of 'replicative fading'. I am rather confused as to what this exactly entails. The book used 'Peace' as an example of a rose that has been regarded through reckless duplication via cutting. So, are the cutting...

A week ago or so I saw some surprising pictures of 'Agnes' (H. Rugosa) bearing pink flowers rather than the usual light amber-yellow. Patricia Routley explained that the flowers opened following a heat wave. She also noted that the flowers had fewer flowers than usual. That rang a bell for me. https...

Resser: Fossil Roses (1942)
http://bulbnrose.x10.mx/Roses/breeding/ ... s1942.html

Falconer: Ancient History of Roses (1839)
http://bulbnrose.x10.mx/Roses/breeding/ ... s1839.html

This seems like a good place to mention older efforts to breed for resistance to fungal infections. http://bulbnrose.x10.mx/Roses/breeding/FishRoseRust1898.html Fish: Orange-fungus on Roses (1898) I have long known that the red-rust seldom or never attacks Teas, Hybrid Teas, Noisettes, Bourbons, Chi...

Today I happened upon another factor that had not occurred to me. The color of the canes and branches can influence winter hardiness. There is not mystery to it once we set the stage. Suppose the temperature is hovering about freezing. Sun is shining and branches that are black or brown will be abso...

It is possible that Rosa foetida did contribute in a useful way with a trait I've been calling "dominant non-red". At the Heritage Rose Garden in San Jose, CA, I saw an alleged "Harison's Yellow' developing a red flush following a heatwave. This occurred in June 2003 and again in June 2006. http://b...

It may be that Rosa foetida is not the only species that contributed to the lilac color of 'Grey Pearl', 'Sterling Silver' and so one. I've been reading about the colors and color patterns of sweet peas. A strain called 'Blue Shift' caught my attention because the blooms start out a purply pink then...

There are a couple of techniques that might help encourage flowering and hip set. These are Binding and Ringing. Binding involves nothing more than wrapping a strong string or twine around a cane and tie it tight enough to impede the downward movement of carbohydrates, protein and such, while not bl...

Some of the "geneticists" (or fruitfly breeders) seemed to consider organisms to be collections of traits. They held a static view of the subjects, mostly ignoring the developmental processes that made a completed plant or animal from a fertilized egg. This developmental program is too easily ignore...

Researchers Surprised After They Graft Tomato Plants With Epigenetically-Modified Rootstock It might be time to re-examine some facts that were already established in the early 19th century. For instance, William Prince, the once-famous nurseryman of Long Island, NY, reported (1832) an important ob...

There is not much you can do if the pollen triggers an SI mechanism. I have read of a few techniques to defeat the self-incompatibility trap, but only one seems applicable to roses: stylar amputation. The SI rejection mechanism apparently works in the style. Remove the style and the problem is solv...

Exactly! I couldn't learn much about blackspot resistance in the years I spent studying roses at the San Jose Heritage, though I did learn something about mildew. I hadn't even noticed until someone directed my attention to the China-Teas (or are they Tea-Chinas? The flowers are smallish, like China...

I remember the story of Lammerts' blackspot resistant line of roses. He thought he had the problem licked. Then he moved from Livermore to the Watsonville area. His best, most resistant cultivars got the Spots. And I may note that 'New Dawn' is usually pretty clean. But it does get a furry coat of m...

I don't do any grafting, but I do collect reports from those who do.

Here's a bibliography that may help pick the right stock for various types of soil and climate.

http://bulbnrose.x10.mx/Roses/breeding/RootsSoil.html

I forgot to add a link to my bibliography on the subject. http://bulbnrose.x10.mx/KKing/Acquired.html Graft transmission is related, but I have a separate bibliography for it. http://bulbnrose.x10.mx/KKing/StockScion.html And a bibliography of Epigenetics and related matters. http://bulbnrose.x10.mx...

Or should I say Stress Memory Test? Researchers Surprised After They Graft Tomato Plants With Epigenetically-Modified Rootstock https://scitechdaily.com/researchers-surprised-after-they-graft-tomato-plants-with-epigenetically-modified-rootstock/ At first read this article seemed like a flashback to...

That's how I see it . Outbox = to go out. Sent = already gone.