Search found 340 matches

by david zlesak
Sat May 18, 2019 10:45 am
Forum: Rose Hybridizers Association Forum
Topic: A.R.T.S. national trial gardens
Replies: 1
Views: 40

Re: A.R.T.S. national trial gardens

Thank you Henry for posting this!! I appreciate that you are quick at finding rose literature and sharing it with others on the forum. It is nice to have strong connections with trade magazines to have articles like this each year to get our word out about the program and the new winners. It is nice...
by david zlesak
Wed May 15, 2019 11:18 pm
Forum: Rose Hybridizers Association Forum
Topic: Variegated roses?
Replies: 18
Views: 337

Re: Variegated roses?

It is a bit slower growing and weaker and it is a single soft pink.
by david zlesak
Tue May 14, 2019 10:16 am
Forum: Rose Hybridizers Association Forum
Topic: Rose Rosette Disease SCRI Review Meeting Slide Presentations
Replies: 3
Views: 129

Re: Rose Rosette Disease SCRI Review Meeting Slide Presentations

It is great that the PowerPoints are listed. I especially love being able to see the roses that have and have not shown symptoms yet of RRD in the Oklahoma and other trials and learning about some of the techniques being developed and are available for RRD detection.
by david zlesak
Mon May 06, 2019 2:10 pm
Forum: Rose Hybridizers Association Forum
Topic: Wasagaming and Snow Pavement as seed parents
Replies: 8
Views: 237

Re: Wasagaming and Snow Pavement as seed parents

That sounds really cool Joe!!! Thank you for the great idea!!! I have one A&B rose in a pot and should try that. It is usually just a good male. That is great higher temperatures may help with overcoming more than just some of the typical self-incompatibility limitations.
by david zlesak
Mon May 06, 2019 9:49 am
Forum: Rose Hybridizers Association Forum
Topic: Wasagaming and Snow Pavement as seed parents
Replies: 8
Views: 237

Re: Wasagaming and Snow Pavement as seed parents

I love your crosses Roselynn! We got to -33F in the Twin Cities this past winter and more newer cane hardy rugosa rose hybrids would sure be great. Here 'Snow Pavement' gets mildew too, but not super bad. I sure love the silvery lavender color. It'll be exciting when more and more of your hybrids bl...
by david zlesak
Tue Apr 16, 2019 9:19 pm
Forum: Rose Hybridizers Association Forum
Topic: Andrew Barocco - Texas hybridizer
Replies: 3
Views: 172

Re: Andrew Barocco - Texas hybridizer

Andrew gave a great tour of the breeding program for the NCPN-R meetings there at the Antique Rose Emporium that he leads with owner Michael Shoup.
by david zlesak
Thu Apr 11, 2019 11:53 pm
Forum: Rose Hybridizers Association Forum
Topic: Flowering, Drought and Disease Tolerance, and Landscape Performance of Landscape Roses Grown under Low-input Conditions
Replies: 2
Views: 106

Re: Flowering, Drought and Disease Tolerance, and Landscape Performance of Landscape Roses Grown under Low-input Conditi

Thank you Henry and Philip! It was a huge undertaking and took a lot of collaboration, volunteers, etc. to make it possible. To respond to some of the points you mentioned Philip, yes the goal was to especially trial roses that haven't been tested in the Earth-Kind manner before and only use a coupl...
by david zlesak
Sun Apr 07, 2019 10:42 am
Forum: Rose Hybridizers Association Forum
Topic: Unreduced pollen in roses
Replies: 4
Views: 103

Re: Unreduced pollen in roses

Those are great questions. It seems like with polyploid series like you mentioned Philip that the higher ploidy is found in the more harsh/severe end of the range. What I've heard is that polyploid allows for more alleles to be housed within the plant from which to hopefully accumulate alleles that ...
by david zlesak
Sat Apr 06, 2019 10:25 pm
Forum: Rose Hybridizers Association Forum
Topic: Unreduced pollen in roses
Replies: 4
Views: 103

Unreduced pollen in roses

There is a new article studying unreduced/2n gametes in roses. Below is the link. I feel the authors did a great job studying this topic. There are some typos, lack of capitalization of rose cultivars, etc. In some of these open access journals there is often less quality control. They cited my 2009...
by david zlesak
Thu Apr 04, 2019 9:32 am
Forum: Rose Hybridizers Association Forum
Topic: more pics for i.d.
Replies: 5
Views: 158

Re: more pics for i.d.

It seems like R. canina isn't too common of a rootstock in the US. However, years back the Pavement series of rugosas first came to the Twin Cities region mainly from a Canadian nursery and they were grafted on R. canina. Over the years there have been a lot of instances where the R. canina sprouted...
by david zlesak
Tue Mar 26, 2019 12:48 pm
Forum: Rose Hybridizers Association Forum
Topic: Do more richly colored seedlings have more richly colored blooms?
Replies: 16
Views: 652

Re: Do more richly colored seedlings have more richly colored blooms?

Here are just a couple representative packs of some of the polyantha seedlings to highlight the findings. The pack on the left had richly colored seedlings and the pack on the right from the same batch of seed had more normal seedling color. There isn't too much in bloom on the left, but you can see...
by david zlesak
Tue Mar 26, 2019 12:35 pm
Forum: Rose Hybridizers Association Forum
Topic: Hand picked - for you!
Replies: 2
Views: 128

Re: Hand picked - for you!

SYNRG™ is an interesting model/group of growers on the East Coast working together to leverage resources and sales throughout their region. This Handpicked brand is a creative way for them to not only test plants internally for the group for what are better varieties that they commit to growing for ...
by david zlesak
Thu Mar 21, 2019 10:44 am
Forum: Rose Hybridizers Association Forum
Topic: Appropriate DNA barcoding for molecular identification of rosa x damascena trigintipetala Plant growing in Taif region,
Replies: 4
Views: 101

Re: Appropriate DNA barcoding for molecular identification of rosa x damascena trigintipetala Plant growing in Taif regi

It seems odd that they would use a lot of Cinnamomeae section species in their analysis (many that are North American) and not include the reported progenitors of R. x damascena from previous studies. R. persica and R. roxburghii may be just the closest of what they sampled and making this extension...
by david zlesak
Thu Mar 14, 2019 9:56 am
Forum: Rose Hybridizers Association Forum
Topic: New Rose Rosette Virus Publication
Replies: 1
Views: 73

Re: New Rose Rosette Virus Publication

The photos and brief, but informative, descriptions are very nice.
by david zlesak
Mon Mar 11, 2019 9:47 am
Forum: Rose Hybridizers Association Forum
Topic: Still trying to wrap my head around Canninae meiosis, and how to overcome...
Replies: 12
Views: 250

Re: Still trying to wrap my head around Canninae meiosis, and how to overcome...

That's a great question Philip. Here are some thoughts that come to my mind. In the past, I found a 3x R. pomifera (it is tetraploid and in the Caninae sections). There were twins from a seed- larger was typical 4x and smaller 3x. The seed was a suspected self as R. pomifera is the first to bloom an...
by david zlesak
Sun Mar 10, 2019 12:40 am
Forum: Rose Hybridizers Association Forum
Topic: Basye's Purple (F2) with thornless and black stems.
Replies: 14
Views: 400

Re: Basye's Purple (F2) with thornless and black stems.

Dear André, Your seedling is absolutely gorgeous!!! I remember 'Basye's Purple' seeming almost sterile, so it is wonderful you have this seedling and hopefully it has improved fertility to more readily move forward. I love Joe's suggestion of'Therese Bugnet' too. It would tempting to cross it with e...
by david zlesak
Thu Mar 07, 2019 9:39 am
Forum: Rose Hybridizers Association Forum
Topic: cherry frost & lemon drift
Replies: 10
Views: 201

Re: cherry frost & lemon drift

Hi Larry, Julie's rose is amazing. It is very hardy for us with minimal tip dieback in Minneapolis at Lyndale Park Rose Garden over the years. It is triploid, but does set a limited number of op hips. It gets 5-6' in our area with a generally upright and slightly spreading form. The flowers are abun...
by david zlesak
Tue Mar 05, 2019 9:29 pm
Forum: Rose Hybridizers Association Forum
Topic: Pretty Polly series
Replies: 6
Views: 125

Re: Pretty Polly series

Thank you Joe and everyone!! :0) I sure love polyanthas and am very excited Star is introducing these. The white one and lavender one are half siblings and were seedlings way back in 1999. The Pink one is a seedling from 2008. I love the darker foliage of the white one against the blooms. The lavend...
by david zlesak
Thu Feb 28, 2019 10:46 am
Forum: Rose Hybridizers Association Forum
Topic: The volume of Acta Horticulturae with rose articles from the meetings in Angers France is out!!
Replies: 3
Views: 131

The volume of Acta Horticulturae with rose articles from the meetings in Angers France is out!!

It is great that the papers associated with talks and posters from the VII International Symposium on Rose Research and Cultivation in Angers France in 2017 just came out!! Here is a link to the articles in the volume. Even though many of us may not have free access to whole articles, we can at leas...
by david zlesak
Thu Feb 28, 2019 9:37 am
Forum: Rose Hybridizers Association Forum
Topic: genetic incompatability? What do you think?
Replies: 13
Views: 229

Re: genetic incompatability? What do you think?

This is a little different in terms of oddities in this picture, but generally, like mentioned, it seems for me too that wider crosses tend to have more oddities. Years ago Julie Overom wrote a nice article on Incongruity in the RHA newsletter. We can have hybrid vigor, but also hybrid breakdown and...