Search found 1300 matches

by jbergeson
Fri Sep 13, 2019 10:10 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 4
Views: 89

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: 4
Views: 89

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: 3123

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: 23
Views: 670

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: 191

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: 219

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: 197

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: 195

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: 219

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: 357

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?
by jbergeson
Thu Aug 22, 2019 11:30 am
Forum: Rose Hybridizers Association Forum
Topic: Grid for pollen measurement
Replies: 14
Views: 357

Re: Grid for pollen measurement

I’m getting a little better at taking photos from my phone through the pocket microscope. One interesting thing is that some roses’ pollen appears to have a mix of yellow and white grains. Any thoughts?
by jbergeson
Mon Aug 19, 2019 9:25 pm
Forum: Rose Hybridizers Association Forum
Topic: Putting honey on stigmas before pollination??
Replies: 12
Views: 585

Re: Putting honey on stigmas before pollination??

In another post there was discussion of calcium aiding pollen tube growth, right? So could we mix a little calcium in with sugar water, add some to a vial of pollen and shake it up, then brush the resulting pollen slurry onto stigmas? I wonder how long you'd have to do all your pollinations...30 min...
by jbergeson
Wed Aug 14, 2019 1:18 pm
Forum: Rose Hybridizers Association Forum
Topic: How to know how many plants I need for breeding?
Replies: 13
Views: 199

Re: How to know how many plants I need for breeding?

Off topic, but thought of it when you talk of stingy pollen producers. As I've mentioned in another thread, I highly recommend getting a pocket microscope. A friend gave me a 40X one that was about a 4" aluminum tube the diameter of a pen. That worked well. Use a black bottle cap or a folgers lid to...
by jbergeson
Thu Aug 08, 2019 1:18 pm
Forum: Rose Hybridizers Association Forum
Topic: Show and Tell?
Replies: 18
Views: 686

Re: Show and Tell?

Tom, I don't know what the species is. It is the rose that grows wild around here in NW MN. I collected pollen from some growing on the edge of our woods. Seems to rebloom after the mower goes through the ditch, maybe. I'm still surprised to get a rebloomer from it. Karl, I love the idea of sorting ...
by jbergeson
Mon Aug 05, 2019 9:22 am
Forum: Rose Hybridizers Association Forum
Topic: New advanced rose rosette virus research
Replies: 5
Views: 209

Re: New advanced rose rosette virus research

We really need to know which roses they've found to be resistant. Is there any way to find that out?
by jbergeson
Sun Aug 04, 2019 7:04 pm
Forum: Rose Hybridizers Association Forum
Topic: Show and Tell?
Replies: 18
Views: 686

Re: Show and Tell?

More show and tell: P42FIVI: Peters 42 (one of Peter Harris' rescues from the Morden Breeding station, a cross between a poly and L83) X FIVI3. A lush and vigorous plant that blooms for a very extended period. 1128: 1048 (a healthy and hardy orange semi-double) x FIVI3 (First Impression x R. virgini...
by jbergeson
Sun Aug 04, 2019 6:53 pm
Forum: Rose Hybridizers Association Forum
Topic: Show and Tell?
Replies: 18
Views: 686

Re: Show and Tell?

Miscellaneous show and tell:

An Easy Elegance Calypso seedling blossom with interesting red stripes.

Double red seedling...probably something like Summer Sun x Cancan.

Prairie Joy x the native rose. Gets nasty blackspot, but amazingly hardy and reblooming.
by jbergeson
Sun Aug 04, 2019 6:49 pm
Forum: Rose Hybridizers Association Forum
Topic: Disease ID question
Replies: 1
Views: 189

Disease ID question

A customer and former neighbor of mine gave me these pics, wondering what is wrong with her Morden Centennial.

It really doesn't look like blackspot. Very soft yellow spots, looking just like they're blurry.

Virus?
by jbergeson
Sun Aug 04, 2019 6:35 pm
Forum: Rose Hybridizers Association Forum
Topic: Show and Tell?
Replies: 18
Views: 686

Re: Show and Tell?

In regards to Karl's note about Max Graf: I have a seedling that is Rugosa #3 x Grouse. (Note: although Rugosa #3 was the result of attempted chromosome doubling, I've always assumed it is a diploid from how it seems to work for breeding.) This seedling is a mounded, spreading plant that reblooms (s...
by jbergeson
Tue Jul 30, 2019 12:27 pm
Forum: Rose Hybridizers Association Forum
Topic: Show and Tell?
Replies: 18
Views: 686

Re: Show and Tell?

Here is a seedling of a blush white single rugosa (Monroe Center Rugosa, a Henry Hudson OP I believe) x a blend of Miracle on the Hudson and Kiss Me pollen. I’m just assuming the pollen parent was MOTH. It doesn’t set hips, but its pollen is gorgeous and uniform. That fact combined with the strong r...