Search found 1840 matches

by Don
Tue Jan 21, 2020 9:44 am
Forum: Rose Hybridizers Association Forum
Topic: Rosa Helenae Hybrida Off Spring Success in NAmerican Cold Zones?es?
Replies: 9
Views: 184

Re: Rosa Helenae Hybrida Off Spring Success in NAmerican Cold Zones?es?

Stephan, thanks for the link. I'll take a ride to Elizabeth Park in the spring to check things out. It's not the first time RRD has been noted there. Back in the 1980's several batches of infected plants got into the mix and in those days we really didn't know much about it so nothing was done to mi...
by Don
Mon Jan 20, 2020 10:06 pm
Forum: Rose Hybridizers Association Forum
Topic: Rosa Helenae Hybrida Off Spring Success in NAmerican Cold Zones?es?
Replies: 9
Views: 184

Re: Rosa Helenae Hybrida Off Spring Success in NAmerican Cold Zones?es?

>> Although 'Patricia Macoun' was bred a long time ago and surely was grown a bit more widely in some northern states at one time, I've never seen it in a garden I have. At Elizabeth Park in Hartford, Connecticut there is small 'test garden' across the road from the main rose garden. It is/was fence...
by Don
Thu Jan 16, 2020 1:19 pm
Forum: Rose Hybridizers Association Forum
Topic: What is the easiest and hardest steps in rose breeding?
Replies: 29
Views: 390

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

>> Brock (1954) succeeded in crossing pear x apple and raising the hybrids.

Brock 1954 svp?
by Don
Thu Jan 16, 2020 11:12 am
Forum: Rose Hybridizers Association Forum
Topic: Is every rose seed completely unique?
Replies: 17
Views: 222

Re: Is every rose seed completely unique?

>> surely when you cross two roses then every single seed will be unique? So one person crossing two roses will always get different results from anyone else crossing the same two roses? You would think so but roses are so heavily inbred that this is not usually true. If you cross any two modern ros...
by Don
Wed Jan 15, 2020 8:03 am
Forum: Rose Hybridizers Association Forum
Topic: What is the easiest and hardest steps in rose breeding?
Replies: 29
Views: 390

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

>> that was solved with digestive enzymes

Dr. Kuska, I know you told us before how you do it but I couldn't dredge up any relevant posts just now. Would you please give us a synopsis on your digestive enzyme methodology?
by Don
Fri Jan 10, 2020 2:08 pm
Forum: Rose Hybridizers Association Forum
Topic: Soil Mix for Seedlings
Replies: 2
Views: 109

Re: Soil Mix for Seedlings

I prefer perlite over vermiculite as there is less chance for mold to develop but I am not in an arid location.
by Don
Thu Jan 02, 2020 4:22 pm
Forum: Rose Hybridizers Association Forum
Topic: Finally a splotch!
Replies: 32
Views: 1659

Re: Finally a splotch!

Do you have a link, Kim?

>> Face Book
by Don
Thu Jan 02, 2020 2:41 pm
Forum: Rose Hybridizers Association Forum
Topic: Finally a splotch!
Replies: 32
Views: 1659

Re: Finally a splotch!

Here are my notes from an article by Jim Sproul posted somewhere on HMF: "It appears that the "blotch" gene (or genes) is linked to genes coding for non-remontancy (that is non-repeat blooming), willowy growth, disease susceptibility and needle-like prickles. It also appears that there are several a...
by Don
Thu Jan 02, 2020 9:33 am
Forum: Rose Hybridizers Association Forum
Topic: Finally a splotch!
Replies: 32
Views: 1659

Re: Finally a splotch!

The seed parent of this seedling was Persian Sunset.
mug.jpg
by Don
Sun Dec 15, 2019 10:59 pm
Forum: Rose Hybridizers Association Forum
Topic: R. carolina video
Replies: 17
Views: 512

apomixtery

Joe, you are truly a master hybridizer. These f1 and f2 hybrids are really powerful results with the potential to bring the health and vigor that is so much needed in modern roses. So I got to wondering about other successful interspecies and multispecies hybrids and came across an on old abstract f...
by Don
Wed Nov 13, 2019 7:28 pm
Forum: Rose Hybridizers Association Forum
Topic: tissue culture
Replies: 9
Views: 453

Re: tissue culture

>> This has been in an issue on late season cuttings This one's easier than tissue culture. What's needed is indole butryic acid, IBA, at the highest concentration sold. In regard to rooting Sericia Andy at Tillotson's once told me that splitting the stem lengthwise a few inches and then dipping it ...
by Don
Wed Nov 06, 2019 10:29 pm
Forum: Rose Hybridizers Association Forum
Topic: a roadmap for rose research in the genome era
Replies: 1
Views: 102

Re: a roadmap for rose research in the genome era

Thanks for this, Dr. Kuska. This paper has a comprehensive discussion of all the possible traits that rose breeders are wanting to manipulate. It describes what is currently known about the genetic control of each of these traits. IF you are a serious breeder this is a must-read, even if you have to...
by Don
Thu Oct 31, 2019 7:56 pm
Forum: Rose Hybridizers Association Forum
Topic: Breeding with R. nitida (video)
Replies: 4
Views: 395

Re: Breeding with R. nitida (video)

Four thumbs up, Joe!
by Don
Fri Oct 11, 2019 4:27 pm
Forum: Rose Hybridizers Association Forum
Topic: Newbie question
Replies: 12
Views: 863

Re: Newbie question

There is some truth to this but in practice it is one of many factors that influence germination. I would not rush to harvest my hips based on this assumption that earlier means better germination. If you want a general rule for harvest then, say, 106 days after pollination would be a better metric ...
by Don
Mon Oct 07, 2019 12:30 am
Forum: Rose Hybridizers Association Forum
Topic: Rose replant disease?
Replies: 13
Views: 673

Re: Rose replant disease?

>> l was shocked and dismayed to see at Chelsea 2018 R. Rugosa is classified as a invasive species.

It's not just England but New England as well. Rugosa is classified as invasive in Connecticut, as is multiflora. Norwegian Maple is on the Connecticut list as well, along with Russian Olive.