Search found 1310 matches

by jbergeson
Sun Oct 20, 2019 9:13 pm
Forum: Rose Hybridizers Association Forum
Topic: Question about seed ripening and pollen parent
Replies: 1
Views: 38

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: 86

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: 186

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: 234

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: 234

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: 234

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.
by jbergeson
Mon Sep 30, 2019 9:34 am
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 6
Views: 182

Re: All A'Twitter x Yatkan

Thanks, Rob! It's been a nice plant. Now in a pot so I have to try not to kill it.

David Mears, for now I'm thinking of crossing with moderns, trying to recover rebloom, and seeing what the results look like.
by jbergeson
Fri Sep 27, 2019 4:41 pm
Forum: Rose Hybridizers Association Forum
Topic: Golden Gate by Kordes
Replies: 3
Views: 165

Re: Golden Gate by Kordes

Haven't tried it. But thank you for the suggestion! If it is hardy enough to be a climber in zone 5b, maybe it would be crown hardy here in northern MN. Healthy yellows are precious. There is a photo of hips on HMF. Could cross it with Above & Beyond in hopes of recovering rebloom (A&B doesn't repea...
by jbergeson
Tue Sep 17, 2019 2:03 pm
Forum: Rose Hybridizers Association Forum
Topic: Newbie question
Replies: 12
Views: 335

Re: Newbie question

Will Radler once said to me "Why?" when I mentioned letting the hips get fully ripe. He didn't provide many details, but apparently they don't need to fully color up. I simply don't get 110 days around here in northern MN, and I find it hard to stop pollinating in the summer, so I end up picking qui...
by jbergeson
Fri Sep 13, 2019 10:10 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 6
Views: 182

Re: All A'Twitter x Yatkan

Mtnlover, (sorry, forgot your real name), this seedling died back each winter but was able to push out just a few blossoms each season. Definitely hardier than All A'Twitter, but not cane hardy. It was bred quite a few years ago, and slowly built itself up into something. Now that I have potted it t...
by jbergeson
Fri Sep 13, 2019 11:30 am
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 6
Views: 182

All A'Twitter x Yatkan

This is a stray late bloom on an interesting seedling that I've had in the field for a number of years and last fall dug up to keep in a pot to try to get it to set hips. All A'Twitter x Yatkan. Yatkan is a large, once-blooming rugosa. The parentage listed on HMF seems unlikely, as it is very hardy....
by jbergeson
Fri Sep 13, 2019 11:18 am
Forum: Rose Hybridizers Association Forum
Topic: Use of Rosa blanda/woodsii in breeding
Replies: 28
Views: 3229

Re: Use of Rosa blanda/woodsii in breeding

Some thoughts and questions: I got my R. woodsii from Lawyer Nurseries. Since then I planted out an outdoor seedling bed and selected a few more seedlings for health and low thorns. I have one that is nearly thornless. It might be a cross with the apparently diploid R. acicularis (also from Lawyer) ...
by jbergeson
Sun Sep 08, 2019 9:39 pm
Forum: Rose Hybridizers Association Forum
Topic: I'm new here, so I'd like to say hi!
Replies: 25
Views: 752

Re: I'm new here, so I'd like to say hi!

John, kudos to you for your organization system. I consistently underperform in the area of recordkeeping, but have made some valiant thrusts in that direction including creating a Filemaker Pro database, which remains unfinished. I actually was able to print out a roll of labels with bar codes repr...
by jbergeson
Sun Sep 08, 2019 9:26 pm
Forum: Rose Hybridizers Association Forum
Topic: Something interesting...
Replies: 6
Views: 233

Re: Something interesting...

Nice, Kim! What we need from Art Nouveau is to find an inheritance of the stripe without the stunting of petal size that seems to accompany it. I crossed my AN x FIVI3 with All the Rage, which has very large single-ish blosssoms, in hopes of carrying through some warm colors with the stripe and larg...
by jbergeson
Tue Sep 03, 2019 2:45 am
Forum: Rose Hybridizers Association Forum
Topic: Odd little seedling
Replies: 7
Views: 242

Re: Odd little seedling

It's been looking like that for a very long time, when I compare to other roses of mine whose blossoms each last one or two days. I would assume that the grocery store mini was bred to have long-lasting blooms. I will dig it this fall and ship it off to somebody.
by jbergeson
Sun Sep 01, 2019 12:08 pm
Forum: Rose Hybridizers Association Forum
Topic: Roses to consider for breeding?
Replies: 6
Views: 221

Re: Roses to consider for breeding?

Carefree Beauty here in NW MN ended up breaking down with what was probably cercospora. Unsightly.

Will Radler, it seems, is the clear leader in producing roses that are broadly disease resistant. The new Kordes roses, while very blackspot resistant, per Julie O are pretty bad for cercospora.
by jbergeson
Wed Aug 28, 2019 8:57 pm
Forum: Rose Hybridizers Association Forum
Topic: Agnes as parent?
Replies: 7
Views: 218

Re: Agnes as parent?

You could open one up with a nail clipper to see if the embryo is white and firm. Adding a drop or two of dish soap to the water might also break the surface tension and allow them to sink.
by jbergeson
Wed Aug 28, 2019 8:45 pm
Forum: Rose Hybridizers Association Forum
Topic: Odd little seedling
Replies: 7
Views: 242

Odd little seedling

This little guy is half blossoms. It’s mother is a red grocery store mini, and the pollen came from Cherry Frost. Unfortunately it seems sterile both ways and hasn’t built itself up much compared to its fellow second year seedlings. Would have been cool to see a mature plant like this smothered in b...
by jbergeson
Thu Aug 22, 2019 10:43 pm
Forum: Rose Hybridizers Association Forum
Topic: Grid for pollen measurement
Replies: 14
Views: 392

Re: Grid for pollen measurement

A couple more pollen pics from a seedling.

The varied size, to me, implied that the rose is triploid.

Note that there are also yellow and white grains. Could the clear/white ones be non viable?