Search found 1323 matches

by jbergeson
Sun Nov 10, 2019 6:28 pm
Forum: Rose Hybridizers Association Forum
Topic: Anyone breeding for fall color?
Replies: 11
Views: 161

Re: Anyone breeding for fall color?

Duane, There are very big differences between using R. glauca as a seed parent vs. pollen parent. The asymmetric meiosis makes it contribute one set of chromosomes as a pollen parent and three as a seed parent. Therefore seedlings from R. glauca as a seed parent will bear its characteristics much mo...
by jbergeson
Tue Nov 05, 2019 9:44 am
Forum: Rose Hybridizers Association Forum
Topic: Variegated roses?
Replies: 35
Views: 1654

Re: Variegated roses?

Sorry to disappoint...mine was planted in the field and grew somewhat but didn't do much. I expect the variegation to be gone in the spring. Check back next July!
by jbergeson
Tue Nov 05, 2019 9:38 am
Forum: Rose Hybridizers Association Forum
Topic: Odd little seedling
Replies: 12
Views: 391

Re: Odd little seedling

I believe I labeled this little guy to be dug, with the intention of sending it to Kim for growth and propagation, as he mentioned above.

So it is probably in a pile of roses somewhere in my bare root building. Kim, would it be best to send it now or should I wait until March or April?
by jbergeson
Fri Nov 01, 2019 1:59 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 24
Views: 484

Re: All A'Twitter x Yatkan

Good point, Plaz.

I'm trying some outdoor seed plots this year to plant larger quantities of OP seed from the aforementioned modern-species F1's, planning to scout for those 27 out of 1000.
by jbergeson
Thu Oct 31, 2019 10:29 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 24
Views: 484

Re: All A'Twitter x Yatkan

It is likely that your R. woodsii seed could benefit from a warm stratification period prior to the cold stratification. If you're in zone 5 that should make your work easier, because the once-blooming seedlings in the first generation of a species-modern cross should be able to have enough live woo...
by jbergeson
Thu Oct 31, 2019 1:21 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 24
Views: 484

Re: All A'Twitter x Yatkan

Duane, I first must give the caveat that my R. virginiana and R. carolina came from Lawyer Nurseries, and look very similar to each other. My assumption is that all they're either one or the other, but I haven't gone to work to figure out which one it is. Therefore, when I talk about R. carolina or ...
by jbergeson
Wed Oct 30, 2019 9:47 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 24
Views: 484

Re: All A'Twitter x Yatkan

[quote=mntlover post_id=70521 time=1572461888 user_id=2154] Also interesting that you used centifolia. Could you expound on why that was your choice, as I've read a lot about sterility issues, and apparently that isn't the case with the pollen you used. Any thoughts? [/quote] It's been a while since...
by jbergeson
Mon Oct 28, 2019 11:57 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 24
Views: 484

more carolina descendants

Blue for You x (R. carolina x (Red Dawn x Suzanne))

Strong fragrance, good vigor. Non-remontant. I used its pollen quite a bit to see if I could recover rebloom.

I have another seedling with similar blossoms which is Blue for You x (R. carolina x R. centifolia).
by jbergeson
Mon Oct 28, 2019 11:43 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 24
Views: 484

Re: All A'Twitter x Yatkan

I'll turn this into a show and tell thread because Duane asked a leading question... 1128: 1048 x FIVI3. I liked the very double, pale yellow blossoms and shrubby habit of this rose. Seems healthy, vigorous, and hardy and has fun genetics. Non-remontant. 1048 is YWP (https://www.helpmefind.com/rose/...
by jbergeson
Mon Oct 28, 2019 11:05 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 24
Views: 484

Re: All A'Twitter x Yatkan

Hi Duane! Thanks for asking about my babies. I love to blab. The pollen was successful in creating hips on Miracle on the Hudson, and Oso Easy Italian Ice, I believe. I've collected the hips, but haven't cracked them open yet to count the seeds or entered them in the computer. The one hip survived t...
by jbergeson
Sat Oct 26, 2019 11:02 pm
Forum: Rose Hybridizers Association Forum
Topic: genetic incompatability? What do you think?
Replies: 18
Views: 437

Re: genetic incompatability? What do you think?

Kind of on this topic...I had a row of either Rugosa #3 or Ann Endt (can't remember offhand) X R. carolina. About six plants. To varying degrees they showed the narrow, somewhat odd leaflets that resembled the effects of herbicide exposure. They were able to grow up and bloom. One of them had no ant...
by jbergeson
Sun Oct 20, 2019 9:13 pm
Forum: Rose Hybridizers Association Forum
Topic: Question about seed ripening and pollen parent
Replies: 15
Views: 390

Re: Question about seed ripening and pollen parent

Not really a direct answer to your question, but I have noticed that hips with fewer seeds might take longer to color up. So maybe if the pollen of that rose was weak, it made fewer seeds per hip, and therefore they're ripening more slowly. My assumption is that the seed maturity is still just as fa...
by jbergeson
Wed Oct 16, 2019 9:13 pm
Forum: Rose Hybridizers Association Forum
Topic: Question about experience with Above and Beyond and Rambling Red
Replies: 5
Views: 173

Re: Question about experience with Above and Beyond and Rambling Red

David Zlesak, the breeder of A&B, once told me that in theory it should produce 1 in 6 repeaters when crossed with a repeater, but actually produces a smaller percentage. I have had a number of seedlings of moderns x A&B that show juvenile and repeat bloom, but I don't know how many seedlings it too...
by jbergeson
Mon Oct 14, 2019 9:02 am
Forum: Rose Hybridizers Association Forum
Topic: Harvested hips - some interesting crosses for me
Replies: 6
Views: 281

Re: Harvested hips - some interesting crosses for me

Rob, I think you have a problem, lol.

says the guy with cardboard boxes full of ziploc bags with rose hips in them...
by jbergeson
Mon Sep 30, 2019 10:49 am
Forum: Rose Hybridizers Association Forum
Topic: Nyveldt's Whtie x Miracle on the Hudson
Replies: 19
Views: 499

Re: Nyveldt's Whtie x Miracle on the Hudson

The best surface upon which to view your pollen is a wide, lightly textured black lid such as from Folgers coffee or Costco pecans. You can smear the pollen across with your finger and it ends up distributed quite evenly for viewing.
by jbergeson
Mon Sep 30, 2019 10:46 am
Forum: Rose Hybridizers Association Forum
Topic: Nyveldt's Whtie x Miracle on the Hudson
Replies: 19
Views: 499

Re: Nyveldt's Whtie x Miracle on the Hudson

I think you'll have a lot of fun looking at pollen. Compare the uniform, beautiful pollen grains of a diploid rugosa to the kind of messed up pollen of various sizes of a modern triploid. It really gives you a good idea of the fertility of a particular rose's pollen, and I think can allow good guess...
by jbergeson
Mon Sep 30, 2019 10:26 am
Forum: Rose Hybridizers Association Forum
Topic: Nyveldt's Whtie x Miracle on the Hudson
Replies: 19
Views: 499

Re: Nyveldt's Whtie x Miracle on the Hudson

Pretty cool, Rob! Have you looked at the pollen under a pocket microscope? This is the perfect situation where such a scope can be useful. I have a rugosa x Miracle on the Hudson seedling that has very uniform pollen grains which implies that it is a diploid and tells me that the pollen is fertile.