yellow rugosas

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henry kuska
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yellow rugosas

Post: # 68023Post henry kuska
Mon Jun 25, 2018 12:08 pm

"The petals of Rosa rugosa are generally pink and purple, never yellow. Although new varieties of R. rugosa have been bred, no yellow variety has ever been obtained. Therefore, the use of roses in garden settings has been restricted. Three R. rugosa hybrid cultivars (R. rugosa ‘Miaoyu’, ‘Rudiepianpian’ and ‘Jiaomeisanbian’) were bred in our laboratory using wild R. rugosa ‘Hunchun’ as the female parent and Rosa xanthina as the male parent."

See:

https://www.sciencedirect.com/science/a ... 2818302791

Warren
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Re: yellow rugosas

Post: # 68024Post Warren
Mon Jun 25, 2018 5:42 pm

the offspring of Fru Dagmar Hastrup X Elara
Attachments
RUG HYB.jpg

roseseek
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Re: yellow rugosas

Post: # 68026Post roseseek
Mon Jun 25, 2018 11:28 pm

Topaz Jewel: Golden Angel X Belle Poitevine; yellow. http://www.helpmefind.com/rose/l.php?l=2.6305
Agnes: Rugosa X Persian Yellow; http://www.helpmefind.com/rose/l.php?l=2.80
Dr. Eckener: Golden Emblem X Rugosa hybrid; http://www.helpmefind.com/rose/l.php?l=2.1546
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

henry kuska
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Re: yellow rugosas

Post: # 68027Post henry kuska
Tue Jun 26, 2018 12:11 am

I posted this not because I was not aware of existing yellow rugosa hybrids; but so that hybridizers would be aware of this possible route for future yellow rugose hybrids.

Jwindha
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Re: yellow rugosas

Post: # 68032Post Jwindha
Thu Jun 28, 2018 11:01 am

Tom Silvers made the cross rugosa x xanthina, but he writes that the hybrid has low fertility:

http://maprc.blogspot.com/2012/11/rosa- ... thina.html

roseseek
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Re: yellow rugosas

Post: # 68033Post roseseek
Thu Jun 28, 2018 11:40 am

We probably should also add Dr. E.M. Mills as it also has Rugosa combined with yellow and expresses much yellow through its life. http://www.helpmefind.com/rose/l.php?l=2.28250
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

Plazbo
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Re: yellow rugosas

Post: # 68035Post Plazbo
Thu Jun 28, 2018 6:57 pm

Jwindha wrote:
Thu Jun 28, 2018 11:01 am
Tom Silvers made the cross rugosa x xanthina, but he writes that the hybrid has low fertility:

http://maprc.blogspot.com/2012/11/rosa- ... thina.html
Its possibly a case of results will vary. I mean most rugosa x china are sterile to low fertility but a few are fertile. Dr Svedja did a number of crosses around that and exceptions appearred.

http://bulbnrose.x10.mx/Roses/breeding/ ... n1974.html

Sure super low percentage but still an achievable possibility with time and space.

henry kuska
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Re: yellow rugosas

Post: # 68036Post henry kuska
Thu Jun 28, 2018 7:21 pm

I did considerable work with Dr. Svedja' crosses. I liked what I got and I tried to encourage others to do also, but I do not think that anyone else did.

david zlesak
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Re: yellow rugosas

Post: # 68037Post david zlesak
Thu Jun 28, 2018 10:04 pm

I have a seedling from many years back of 'Pristine Pavement' x R. primula. Strangely it seldom flowers even though it is hardy. The foliage is beautiful and healthy. It didn't seem fertile when I looked at its pollen. It didn't set hips either. I have to suddenly move/destroy a rose garden at a friends house who is selling.... Last week I went through taking cuttings of things I don't want to lose. I was on the fence with this one because it wasn't fertile and doesn't bloom too often, but its beautiful foliage and health convinced me to try a few cuttings.

I would love to try to do more hardy yellow diploid breeding. I'm struggling a bit with the sources of yellow to use... I should try to get another 'Golden Angel' and try working with it more again. I have some peach diploid hybrids with polyanthas. Unfortunately, they aren't too fertile. I would love to try again using it and to use it with rugosas too.
Attachments
IMG_6950 5 19 2012  (66) Pristine Pavement x Rosa primula.JPG
One of the few times this seedling flowered

Warren
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Re: yellow rugosas

Post: # 68038Post Warren
Thu Jun 28, 2018 10:35 pm

David it may become fertile if it is grown in higher zone rating of 8 or 9 . see if anyone in these zones would like to take it on.

warren

roseseek
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Re: yellow rugosas

Post: # 68039Post roseseek
Thu Jun 28, 2018 11:01 pm

Hi David, I will see if there is anything I can cut from Golden Angel to send with the 1-72-1 cuttings I will collect from a friend's large plant in Santa Barbara when we visit her after July 7. Burling may have rooted Golden Angels. She's worth a shot.
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

Plazbo
Posts: 59
Joined: Tue May 09, 2017 12:18 am
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Re: yellow rugosas

Post: # 68040Post Plazbo
Fri Jun 29, 2018 3:47 am

henry kuska wrote:
Thu Jun 28, 2018 7:21 pm
I did considerable work with Dr. Svedja' crosses. I liked what I got and I tried to encourage others to do also, but I do not think that anyone else did.
Her early dipoid work has inspired me some. I likely wouldn't be looking at diploids like i currently do without reading some of the papers and results of her work. Given many of her roses arent here though there's a bit of reinventing the wheel for me, a lot of diverse schneezwerg babies in my future looking for the tiny percentage of fertile offspring

david zlesak
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Re: yellow rugosas

Post: # 68047Post david zlesak
Sun Jul 01, 2018 11:11 am

That's a great idea Warren! Hopefully the cuttings root well and there'll be a number to share. Thank you Kim!! I'll reach out to Burling too. It'll be great to have a number of plants of 'Golden Angel' to cross a lot of diploid males onto.

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