Search found 162 matches

by MidAtlas
Thu Apr 21, 2022 9:37 am
Forum: Rose Hybridizers Association Forum
Topic: Eva (Kordes) is tetraploid, coming from diploid seedparent?
Replies: 15
Views: 603

Re: Eva (Kordes) is tetraploid, coming from diploid seedparent?

Agreed. Looking at the other varieties that Kordes introduced the same year, described in the same publication, all of the parentage listings began with the same "Semis de..." opening. It probably had no specific meaning, although taken out of context, it almost sounds as if it might.
by MidAtlas
Thu Apr 21, 2022 12:08 am
Forum: Rose Hybridizers Association Forum
Topic: Eva (Kordes) is tetraploid, coming from diploid seedparent?
Replies: 15
Views: 603

Re: Eva (Kordes) is tetraploid, coming from diploid seedparent?

In case anyone is hunting for it, here is the paper where the chromosome count for 'Eva' was published by Wulff and Heldt in Der Züchter 23(3): 87-93 (1953): https://link.springer.com/content/pdf/10.1007/BF00712182.pdf Also, if the oldest reference listed for 'Eva' at HMF is faithfully reproduced th...
by MidAtlas
Wed Apr 20, 2022 11:40 pm
Forum: Rose Hybridizers Association Forum
Topic: Eva (Kordes) is tetraploid, coming from diploid seedparent?
Replies: 15
Views: 603

Re: Eva (Kordes) is tetraploid, coming from diploid seedparent?

Hi David, that is wonderful to hear! I don't know if anyone else has the cultivar, but it might be a little while before I can assist--I had only just obtained a small plant last year from Joy Creek Nursery (which ceased its operations later in 2021), and it's still barely more than a rooted cutting...
by MidAtlas
Tue Apr 19, 2022 1:10 am
Forum: Rose Hybridizers Association Forum
Topic: Boston North Slump Over for Germination?
Replies: 15
Views: 799

Re: Boston North Slump Over for Germination?

That doesn't look too bad to me! The 6910s have been a little weak here right out of the gate, so I don't necessarily think it is their fault. It could be as simple as the quality of potting medium used by the nursery that makes or breaks it as a young plant, and I should have done more to intervene...
by MidAtlas
Sun Apr 17, 2022 11:19 pm
Forum: Rose Hybridizers Association Forum
Topic: Boston North Slump Over for Germination?
Replies: 15
Views: 799

Re: Boston North Slump Over for Germination?

This method seems to be working out pretty well for your Rosa xanthina, at least--which is not a small thing, since hardy yellow species can be some of the trickier ones to germinate.

I like the breeding potential of Morden 6910, and am trying to get it to tolerate my climate well enough to proceed.
by MidAtlas
Sun Apr 17, 2022 11:13 pm
Forum: Rose Hybridizers Association Forum
Topic: Eva (Kordes) is tetraploid, coming from diploid seedparent?
Replies: 15
Views: 603

Re: Eva (Kordes) is tetraploid, coming from diploid seedparent?

Has anyone confirmed the chromosome count reported for 'Eva'?
by MidAtlas
Sun Apr 10, 2022 12:47 pm
Forum: Rose Hybridizers Association Forum
Topic: Flamenco Rosita/Ivor's rose/Beadonald
Replies: 2
Views: 195

Re: Flamenco Rosita/Ivor's rose/Beadonald

I'm sorry to say that I didn't quite have it long enough to try using in breeding because it caught RRD early on, and the disease progressed into the roots in record time. I didn't notice much in the way of fragrance, but it did have vibrant color and excellent health (other than the RRD), and I def...
by MidAtlas
Sun Apr 03, 2022 1:12 pm
Forum: Rose Hybridizers Association Forum
Topic: Boston North Slump Over for Germination?
Replies: 15
Views: 799

Re: Boston North Slump Over for Germination?

Congrats! It's interesting that you let your seeds freeze, much less for such long periods of time, during stratification--is that a strategic choice? I tried to delay my germinations this year by waiting longer to start stratifying my seeds, because I had a lot of other plants taking up space on th...
by MidAtlas
Sun Mar 27, 2022 1:39 am
Forum: Rose Hybridizers Association Forum
Topic: An early Hulthemia hybrid?
Replies: 8
Views: 490

Re: An early Hulthemia hybrid?

It's purely circumstantial evidence of course, but there's an 1883 reference from The Garden by Jean Sisley recorded at HelpMeFind.com under R. persica stating that he had sent seeds of the species itself to William Paul two years earlier. R. x hardii, while undoubtedly the earliest recorded hybrid ...
by MidAtlas
Thu Mar 24, 2022 10:28 pm
Forum: Rose Hybridizers Association Forum
Topic: "Duchesse de Montebello" as a parent
Replies: 14
Views: 1608

Re: "Duchesse de Montebello" as a parent

I've wanted to try Allegra for years after growing Marianne (which makes a very large plant here, and while not free of black spot by any means, it's better than average and keeps chugging along). Given how much less black spot-prone St. Swithun is here compared with the mostly perpetually-leafless ...
by MidAtlas
Thu Mar 24, 2022 10:20 pm
Forum: Rose Hybridizers Association Forum
Topic: Thornless wichuriana (and soulieana...)
Replies: 8
Views: 456

Re: Thornless wichuriana (and soulieana...)

I had a plant of R. soulieana (from Vintage, if I recall correctly) for a number of years, and found it to be a vicious beast of a plant. Its foliage was not impressively glaucous in appearance relative to some others--it seemed to be the result of hairs on the leaves rather than a glaucousness of t...
by MidAtlas
Mon Feb 21, 2022 2:13 am
Forum: Rose Hybridizers Association Forum
Topic: Types of repeat-flowering in roses
Replies: 47
Views: 4004

Re: Types of repeat-flowering in roses

I believe you're right about the earlier introduction date for Rosa moschata; I would need to dig around for the reference I'm remembering, but I seem to recall reading that it was introduced from the Middle East (Persia?) to Paris in the 1500s. An extended flowering for Rosa sempervirens does seem ...
by MidAtlas
Fri Feb 11, 2022 12:48 am
Forum: Rose Hybridizers Association Forum
Topic: Types of repeat-flowering in roses
Replies: 47
Views: 4004

Re: Types of repeat-flowering in roses

This might still not be satisfactory when splitting hairs about the meaning of the word "shining," but in a glossary of botanical terms at the end of a botany manual by the elder James Lee citing Linnaeus (see below), splendentia (folia) is listed simply as "a shining leaf" while nitidum (folium) is...
by MidAtlas
Thu Feb 10, 2022 11:54 pm
Forum: Rose Hybridizers Association Forum
Topic: Types of repeat-flowering in roses
Replies: 47
Views: 4004

Re: Types of repeat-flowering in roses

We've already had a variant of this same argument in the other thread; I don't agree that "splendentia" is the appropriate Latin word for Herrmann to have used if he really intended to communicate "shining" or "glossy" in the sense that you're trying to say that he did. In reality, it is likely a di...
by MidAtlas
Tue Feb 08, 2022 12:21 am
Forum: Rose Hybridizers Association Forum
Topic: old paper from 1975 help find
Replies: 12
Views: 875

Re: old paper from 1975 help find

Don, Quarryhill Botanical Garden officially became Sonoma Botanical Garden on March 17, 2021, and they have a brief statement about the rebranding at the link below (in short, it seems that they had acquired a second property where they will focus on California native vegetation; maybe they felt tha...
by MidAtlas
Sat Feb 05, 2022 11:46 pm
Forum: Rose Hybridizers Association Forum
Topic: A 1994 Feel Trip of Hybridizers Around the World
Replies: 4
Views: 464

Re: A 1994 Feel Trip of Hybridizers Around the World

In case anyone would be interested in seeing more episodes of the series by Roger Phillips and Martyn Rix in the first link posted above, I found these, although there may be others available with a bit more hunting: https://www.youtube.com/watch?v=trTMtMZxnZs https://www.youtube.com/watch?v=j3fiLqX...
by MidAtlas
Thu Feb 03, 2022 11:37 pm
Forum: Rose Hybridizers Association Forum
Topic: ?confirmation of parentage?
Replies: 10
Views: 843

Re: ?confirmation of parentage?

I'll bet that it was the several days of snow cover that did the most damage--a lot of plants that can easily handle brief cold snaps if dry can suffer badly if they experience extended contact with snow and ice.
by MidAtlas
Wed Feb 02, 2022 10:41 pm
Forum: Rose Hybridizers Association Forum
Topic: ?confirmation of parentage?
Replies: 10
Views: 843

Re: ?confirmation of parentage?

There probably isn't a deeper reason for the success of tender (seed parent) x cold-hardy (pollen parent) crosses' success other than that the tender parents in such cases have tended to have more easily-germinated seed than the particular cold-hardy pollen parents. In other words, if you had a cold...
by MidAtlas
Wed Feb 02, 2022 10:14 pm
Forum: Rose Hybridizers Association Forum
Topic: Agnes as parent?
Replies: 34
Views: 3790

Re: Agnes as parent?

I wonder, is rust a common rose disease in Edmonton, or is it pretty much exclusive to your boulevard R. blanda? Either way, I wonder where that strain (of R. blanda) might have originated. I don't believe that rust was ever a problem on any of the wild plants that I knew in Minnesota. Some lower le...
by MidAtlas
Mon Jan 31, 2022 12:40 am
Forum: Rose Hybridizers Association Forum
Topic: Agnes as parent?
Replies: 34
Views: 3790

Re: Agnes as parent?

I just happen to have some seeds stratifying right now from crossing Gertrude Jekyll with 'Applejack' last season--that combination seems to have been a fairly fertile one. I'm not too sure what to expect from the seedlings, since both parents are rather lacking in disease resistance here. Gertrude ...