Search found 37 matches

by jakaufmann
Sat Jun 06, 2020 9:37 pm
Forum: Rose Hybridizers Association Forum
Topic: Weird petal form
Replies: 1
Views: 152

Re: Weird petal form

That’s really interesting. These are the first blooms? I wonder if they’ll change at all as the plant gets older. I’m pretty new with breeding, but I’m wondering whether this could be used in future generations to create a useful offspring. For example, if the flower had more petals, I could imagine...
by jakaufmann
Sat Jun 06, 2020 8:16 pm
Forum: Rose Hybridizers Association Forum
Topic: Pesticides/Fungicides on pollinated plants.
Replies: 3
Views: 196

Re: Pesticides/Fungicides on pollinated plants.

Thanks for the info! I tried to find discussions on this topic, but I didn’t know what to look for. I couldn’t find anything with my direct question. However, I’m certain there must be a discussion somewhere I missed. I’ll keep looking, but if you stumble across it, it’d appreciate it! To be honest,...
by jakaufmann
Sat Jun 06, 2020 3:57 am
Forum: Rose Hybridizers Association Forum
Topic: Pesticides/Fungicides on pollinated plants.
Replies: 3
Views: 196

Pesticides/Fungicides on pollinated plants.

I've been trying to figure out if it's okay to spray plants that have been pollinated. Currently, I'm in my last few weeks of pollinating, but I'm having some issues with aphids. I'd like to spray, but I've already started pollinating on the plants and ones next to them. Also, we have other plants i...
by jakaufmann
Tue Apr 28, 2020 10:46 pm
Forum: Rose Hybridizers Association Forum
Topic: Does anyone know a place like this for clematis breeding?
Replies: 2
Views: 449

Does anyone know a place like this for clematis breeding?

I've been trying to find a good source for clematis breeding, but it seems to be even more difficult to find info than rose breeding.

Do any of you know of any good sources?

Hope this post is okay. Thanks!
by jakaufmann
Mon Jan 13, 2020 11:09 pm
Forum: Rose Hybridizers Association Forum
Topic: What is the easiest and hardest steps in rose breeding?
Replies: 29
Views: 1261

Re: What is the easiest and hardest steps in rose breeding?

Actually, because I enjoy it, it's all "fun". What is the most time consuming and "difficult" is digging anthers out of an extremely double bloom. Handling moss rose blooms is also time consuming and "difficult" because the mossing tends to be sticky and the hard moss types can actually penetrate y...
by jakaufmann
Mon Jan 13, 2020 10:28 pm
Forum: Rose Hybridizers Association Forum
Topic: What is the easiest and hardest steps in rose breeding?
Replies: 29
Views: 1261

What is the easiest and hardest steps in rose breeding?

Recently, I've had the discussion with someone. They keep insisting I need to practice the pollination process, but I keep insisting that knowing roses thoroughly (lineage, general growth habit, differences in growth and characteristics based on climate and region, ease of use in breeding, among oth...
by jakaufmann
Fri Nov 22, 2019 5:17 am
Forum: Rose Hybridizers Association Forum
Topic: How common are sports?
Replies: 3
Views: 264

How common are sports?

Currently, I have about 200 roses in my garden. At my father-in-laws greenhouse, we have a few thousand. He’s been telling me I should pay lots of attention to whether I see a sport happening. I know it happens, but I’m not entirely sure it’s common enough to spend a significant amount of time doing...
by jakaufmann
Tue Oct 15, 2019 4:00 am
Forum: Rose Hybridizers Association Forum
Topic: Freedom Gardens is a source for rare roses
Replies: 6
Views: 1049

Re: Freedom Gardens is a source for rare roses

Very interesting information! I'l definitely going to have to look into this a bit more. THanks!
by jakaufmann
Mon Oct 14, 2019 9:01 pm
Forum: Rose Hybridizers Association Forum
Topic: I'm new here, so I'd like to say hi!
Replies: 25
Views: 1940

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 rep...
by jakaufmann
Mon Oct 14, 2019 8:58 pm
Forum: Rose Hybridizers Association Forum
Topic: I'm new here, so I'd like to say hi!
Replies: 25
Views: 1940

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

Hi Josh, My wife and I are in our 3rd year hybridizing in the Seattle/Olympic area. Coming from a software / data science background I'm personally obsessed with the tracking and process optimization. We manage our rose database in Airtable and we have out DYMO label printer hooks up to a little Ra...
by jakaufmann
Fri Aug 16, 2019 5:47 am
Forum: Rose Hybridizers Association Forum
Topic: How to know how many plants I need for breeding?
Replies: 13
Views: 636

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 t...
by jakaufmann
Fri Aug 16, 2019 2:34 am
Forum: Rose Hybridizers Association Forum
Topic: Can any give suggestions on these roses for breeding?
Replies: 10
Views: 592

Re: Can any give suggestions on these roses for breeding?

Hi Josh, I looked at your list, many of of the roses you chose I've tired from time to time. In my zone 3 climate. Tender roses are essentially expensive annuals. I'm lucky to get them survive 3 winters. Maybe it's something I have to learn to master yet. George Vancouver would offer a lot of winte...
by jakaufmann
Fri Aug 16, 2019 1:33 am
Forum: Rose Hybridizers Association Forum
Topic: Can any give suggestions on these roses for breeding?
Replies: 10
Views: 592

Re: Can any give suggestions on these roses for breeding?

That was once my thinking as well, but I would suggest that what that means is you are ultimately selecting for roses that have been around and have been heavily mined for their genotypes, (Not that that is a bad thing -- Kordes has occasionally returned to seedlings of nearly a half century earlie...
by jakaufmann
Wed Aug 14, 2019 1:15 am
Forum: Rose Hybridizers Association Forum
Topic: Can any give suggestions on these roses for breeding?
Replies: 10
Views: 592

Re: Can any give suggestions on these roses for breeding?

From experience, I would add Fourth of July and Altissimo to your seed parent list as both make copious self set hips and their seeds germinate like rye grass. That doesn't mean you can't also use them for pollen, but why limit your chances by missing out of a guaranteed germinator? That is really ...
by jakaufmann
Wed Aug 14, 2019 1:14 am
Forum: Rose Hybridizers Association Forum
Topic: Can any give suggestions on these roses for breeding?
Replies: 10
Views: 592

Re: Can any give suggestions on these roses for breeding?

From experience, I would add Fourth of July and Altissimo to your seed parent list as both make copious self set hips and their seeds germinate like rye grass. That doesn't mean you can't also use them for pollen, but why limit your chances by missing out of a guaranteed germinator? That is really ...
by jakaufmann
Tue Aug 13, 2019 11:19 pm
Forum: Rose Hybridizers Association Forum
Topic: How to know how many plants I need for breeding?
Replies: 13
Views: 636

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

Repeat pollination can increase the number of hips set, as well as the number of achenes per hip. That's a point I never considered. In China, I volunteered at a breeding program this spring, and they only pollinated roses once. However, in the RHA booklets (and elsewhere), many suggested pollinati...
by jakaufmann
Tue Aug 13, 2019 11:15 pm
Forum: Rose Hybridizers Association Forum
Topic: Can any give suggestions on these roses for breeding?
Replies: 10
Views: 592

Can any give suggestions on these roses for breeding?

I know I've been asking a lot of questions, but I appreciate everyone's answers so much! You've all be incredibly helpful. Next year, I've decided to focus on red (hopefully dark red/black, but I'm starting slightly broader using reds in general). In addition, I'd love to get a dark red striped rose...
by jakaufmann
Tue Aug 13, 2019 4:52 am
Forum: Rose Hybridizers Association Forum
Topic: Itsy, bitsy, teeny, weeny
Replies: 10
Views: 703

Re: Itsy, bitsy, teeny, weeny

I love the idea of these micro mini roses! That's sad that they are as difficult to grow as you all say. Has there been much done breeding-wise with these super tiny miniatures?
by jakaufmann
Tue Aug 13, 2019 4:43 am
Forum: Rose Hybridizers Association Forum
Topic: How to know how many plants I need for breeding?
Replies: 13
Views: 636

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

Yes, roseseek and donald_vancouver, you're right. It's probably extremely difficult to give a good estimate. However, the concept that shrubs and floribundas seem to give more flowers is a useful one. The idea that hybrid teas give less is something I was definitely already thinking. I mean, they're...
by jakaufmann
Tue Aug 13, 2019 4:37 am
Forum: Rose Hybridizers Association Forum
Topic: How to know how many plants I need for breeding?
Replies: 13
Views: 636

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

Plazbo wrote:
Tue Aug 13, 2019 3:09 am
As mentioned by others its going to vary by goals, location, available space, cost, etc.

The other variation is some roses produce 25+ seed a hip while others are lucky to produce 4.
Dang, you're totally right! This is so much more complicated than I first thought. I appreciate your input.