First Germination of the Winter

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First Germination of the Winter

Postby Rob Byrnes » Thu Dec 21, 2017 9:53 am

I have my first germination of the winter. It is Rugotreat x 13-1. Rugotreat is three generations of open pollination of Rosa rugosa 'rubra' where an openly pollinated F1 seedling from the Rosa rugosa 'rubra' mother plant was treated by David Zlesak with trifluralin to double the chromosome count.

The pollen parent is 13-1 (Larry Davis) which is (Orange Surprise x First Impression). Orange Surprise is (Carefree Beauty x Rise n Shine) x (Carefree Beauty x Austrian Copper). There's lots of interesting genes here and I'm looking forward to seeing what this cross produces. This cross should be hardy, tetraploid (?) and hopefully disease resistant. 13-1 has nice double yellow blooms, is a small shrub, is highly disease resistant here, very fertile and blooms in flushes throughout the season.

Unfortunately, Rugotreat bloomed very sparsely, one flower during a season if at all, so it was pulled due to space limitations. This is the first germination so it's very exciting for me.
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Rob Byrnes

Historic Village of Roebling, NJ Zone 7a
On the right bank of the Delaware River
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Re: First Germination of the Winter

Postby pgeurts » Fri Dec 22, 2017 1:26 pm

Rob,
Glad to see you have used the Rugotreat in a few crosses. It’ll be interesting to see what this seedling looks like. The mother was a sparse bloomer also and so were pretty much all of the seedlings I grew from it. I tried numerous crosses with the mother but it was always a crap shoot whether the seedlings were from the cross, a self-pollination or an OP seedling from another plant. I had some seedlings from the mother x Therese Bugnet where almost half of them were clearly from self-pollination. I also have a plant that was supposed to be a cross of the mother with a (Belle de Crecy x Frontenac) but it’s clearly a cross with Commander Gillette. Which is OK, I plan to try a few crosses with it, but it’s a sparse bloomer as well.
Paul Geurts
Zone 4 Minnesota
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Re: First Germination of the Winter

Postby Rob Byrnes » Fri Dec 22, 2017 2:12 pm

Hi Paul,

I couldn't believe how sparse of a bloomer this one was. I had 3 other siblings that never bloomed in all the time I had them. My hope in crossing Rugotreat with 13-1 was to be able to clearly identify whether or not the F1 are hybrids or not. I'm hoping that this F1 will have a bloom in a shade of yellow, have good repeat bloom and disease resistance. 13-1 is has very good repeat bloom and is very clean here.

I hope you get some nice things out of the cross of the mother with Commander Gillette. Happy holiday to you and yours.

Regards,

Rob
Rob Byrnes

Historic Village of Roebling, NJ Zone 7a
On the right bank of the Delaware River
Rob Byrnes
 
Posts: 1489
Joined: Thu Dec 15, 2011 3:34 pm

Re: First Germination of the Winter

Postby pgeurts » Fri Dec 22, 2017 4:30 pm

Yeah, I think the offspring bloom even less than the mother did. My experience with crossing pink/magenta with yellow is the seedlings run the gamut in color. But I do have one seedling that is yellow using Kim’s 1-72-1hugonis pollen on a pink mother, so it can happen.

Have you done any crosses with Ruglauca? Mine hasn’t bloomed yet, it may take another year or two. Remind me, is my plant a cutting of Ruglauca or a seedling of Ruglauca?

Happy holidays to you and your family as well!

Paul
Paul Geurts
Zone 4 Minnesota
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Posts: 291
Joined: Sun Oct 13, 2013 10:26 am
Location: Annandale, Minnesota

Re: First Germination of the Winter

Postby Rob Byrnes » Tue Dec 26, 2017 9:45 am

Paul,

I do have some seeds from Ruglauca crosses and some OP seeds from this season as well, that I hope will germinate this winter. I sent you a rooted cutting of Ruglauca. I hope it blooms for you next season. From the OP seeds I'll be looking for leaf color that looks like R. glauca. I'll be crossing it back onto R. glauca next season if the bloom timing works out for me.

Using pollen that Kim Rupert sent me, I found that 1-72-1 passes on yellow very easily. Even with pinks. I'll have to check to see if I can get 1-72-1 from Kim.
Rob Byrnes

Historic Village of Roebling, NJ Zone 7a
On the right bank of the Delaware River
Rob Byrnes
 
Posts: 1489
Joined: Thu Dec 15, 2011 3:34 pm

Re: First Germination of the Winter

Postby pgeurts » Tue Dec 26, 2017 1:01 pm

Hi Rob,
That’s great that you’ve been able to do some crosses with it and have some OP seeds as well. I hope back crossing it to R.glauca takes and you get some hybrid seedlings. I may get some blooms from mine this coming spring, it’s still pretty small but because it repeats I may get a few. Once it gets bigger I’ll have a better idea what to cross it with.
Paul Geurts
Zone 4 Minnesota
pgeurts
 
Posts: 291
Joined: Sun Oct 13, 2013 10:26 am
Location: Annandale, Minnesota

Re: First Germination of the Winter

Postby Rob Byrnes » Wed Jan 10, 2018 2:04 pm

I have four seedlings from this cross, RUGOTREAT x 13-1, that are showing little, if any, rugosa influence so far. I’m hoping for first blooms this season.
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Rob Byrnes

Historic Village of Roebling, NJ Zone 7a
On the right bank of the Delaware River
Rob Byrnes
 
Posts: 1489
Joined: Thu Dec 15, 2011 3:34 pm


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