Search found 344 matches

by david zlesak
Mon Jun 17, 2019 11:33 am
Forum: Rose Hybridizers Association Forum
Topic: Putting honey on stigmas before pollination??
Replies: 7
Views: 110

Re: Putting honey on stigmas before pollination??

Thanks everyone! For the water in the pollen germination assays I've just used RO or distilled water in the lab. That is a good question how much city water with chlorine or water with various minerals would impact the results.
by david zlesak
Sun Jun 16, 2019 2:05 pm
Forum: Rose Hybridizers Association Forum
Topic: Putting honey on stigmas before pollination??
Replies: 7
Views: 110

Putting honey on stigmas before pollination??

I was visiting with a rhododendron breeding friend last week and she says she uses honey on stigmas when she emasculates and doesn't want to wait a day or so for the natural secretions to build so she can pollinate right away more effectively. I saw her make some pollinations. She uses raw unfiltere...
by david zlesak
Sun May 26, 2019 11:17 pm
Forum: Rose Hybridizers Association Forum
Topic: Rose viruses with pictures of infected leaves
Replies: 1
Views: 115

Re: Rose viruses with pictures of infected leaves

Thank you for posting this Henry! A challenge is that sometimes the symptoms look a bit different from cultivar to cultivar, but it is great to have as many pictures of the range of symptoms for each virus as possible to have a good starting point. For Rose Yellow Mosiac Virus, for instance, not all...
by david zlesak
Fri May 24, 2019 10:59 pm
Forum: Rose Hybridizers Association Forum
Topic: Best sources for virus free hybrid teas?
Replies: 3
Views: 122

Re: Best sources for virus free hybrid teas?

I think I read Burling has obtained stock from FPS, if available, for the cultivars she sells. I forgot the details now, but that is why I think I ordered 'Crimson Glory' from her years back.
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: 74

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: 401

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: 155

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: 268

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: 268

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: 193

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: 116

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: 114

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: 114

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: 173

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: 687

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: 140

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: 113

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: 85

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: 277

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: 427

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...