Search found 20 matches

by matt lustig
Mon Dec 02, 2019 7:03 pm
Forum: Rose Hybridizers Association Forum
Topic: Chip Budding Questions
Replies: 4
Views: 113

Chip Budding Questions

I have some background knowledge (and supplies) from years of grafting apples and chestnuts, and am hoping to transfer these into chip budding of roses, something that I've not previously tried. I have a couple questions that perhaps forum members can shed light on: 1. What is the appropriate window...
by matt lustig
Thu Jan 24, 2019 8:25 pm
Forum: Rose Hybridizers Association Forum
Topic: Some ploidy questions
Replies: 26
Views: 609

Some ploidy questions

A number of forum posts have had to do with ploidy in roses, something that I would like to understand better. I understand from both roses and other flowers that higher ploidy levels are thought to lead to larger and/or "stiffer" flowers. However I do not know how consistent this relationship/corre...
by matt lustig
Wed Jan 23, 2019 9:55 pm
Forum: Rose Hybridizers Association Forum
Topic: Variegated roses?
Replies: 35
Views: 1707

Re: Variegated roses?

For some years my impression had been that variegated foliage in plants was inherited through faulty chloroplasts in a non-Mendelian fashion, and generally maternally inherited (similar to how mitochondrial issues are inherited in humans). Such maternal inheritance is thought to account for variegat...
by matt lustig
Tue Jan 15, 2019 8:53 pm
Forum: Rose Hybridizers Association Forum
Topic: Do more richly colored seedlings have more richly colored blooms?
Replies: 16
Views: 845

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

David, I do not know of any information regarding your question with rose color. However, you might be interested in some similar information from a different genus. Somewhat similar to roses, snapdragons come in shades along a purple-red-pink-white spectrum, and also variously in yellow, and flower...
by matt lustig
Sat Jan 05, 2019 7:31 pm
Forum: Rose Hybridizers Association Forum
Topic: Is it just me? (On rose rustling...)
Replies: 11
Views: 289

Re: Is it just me? (On rose rustling...)

My own experience is more with obtaining seeds, less frequently whole plants and/or cuttings. Also my experiences are not solely with roses, but with hardwood plants (roses, chestnuts, and various fruiting species) more broadly. Nevertheless for what it's worth, I certainly am not comfortable taking...
by matt lustig
Thu Oct 04, 2018 5:41 pm
Forum: Rose Hybridizers Association Forum
Topic: Harvested hips
Replies: 38
Views: 2197

Re: Harvested hips

RBaxter, could you clarify your storage method? It looks like a cotton ball, wet enough to hold high humidity? Whatever it is, if it works well it might be more efficient than my own stratification method. I've typically used vermiculite for a variety of seeds (both roses and otherwise), but medium ...
by matt lustig
Thu Aug 30, 2018 9:26 pm
Forum: Rose Hybridizers Association Forum
Topic: Making room...
Replies: 5
Views: 402

Re: Making room...

Kim, I would be interested in Smiling Jean, given what you shared of its disease resistance. I'd like to see if it will set hips here in southern PA. I'll contact you (PM) to see if this can work out. Thanks for the offer!

Matt
by matt lustig
Thu Aug 30, 2018 7:16 pm
Forum: Rose Hybridizers Association Forum
Topic: Regarding ancestry
Replies: 10
Views: 651

Regarding ancestry

This post is partly a result of a personal and professional interest in genetics (I'm a math teacher but formerly taught science, including genetics concepts). We understand that in general, when there are offspring of two parents with equivalent ploidy (i.e. the offspring of 2 diploid parents), th...
by matt lustig
Sun Jul 22, 2018 12:14 am
Forum: Rose Hybridizers Association Forum
Topic: Self-Incompatibility
Replies: 24
Views: 1456

Re: Self-Incompatibility

Thanks to all involved for the interesting thoughts regarding the differences in self-compatibility levels. It sounds like there is not certainty about the genetic mechanism(s) that would result in these different levels in Rosa specifically, but there are some interesting theories. I particularly l...
by matt lustig
Sun Jul 22, 2018 12:00 am
Forum: Rose Hybridizers Association Forum
Topic: Self-Incompatibility
Replies: 24
Views: 1456

Re: Self-Incompatibility

We're getting a bit far afield from the original topic of self-incompatibility :) , but I think we agree on the central points. I think we both agree, for instance, that the same possibilities exist whether a single hybrid individual selfs (assuming a high degree of heterozygosity in that individual...
by matt lustig
Sat Jul 21, 2018 10:35 pm
Forum: Rose Hybridizers Association Forum
Topic: Self-Incompatibility
Replies: 24
Views: 1456

Re: Self-Incompatibility

...if two different strains cross to make a hybrid, the progeny has four choices. Cross with a parent, cross with itself, cross with a different hybrid, or don't cross at all. ... If it crosses with only one parent, it merges with that parent over time. This is certainly correct regarding the possi...
by matt lustig
Sat Jul 21, 2018 10:01 pm
Forum: Rose Hybridizers Association Forum
Topic: Self-Incompatibility
Replies: 24
Views: 1456

Re: Self-Incompatibility

Still interested if anyone understands the genetic mechanism(s) by which self-incompatibility would differ in diploid vs. haploid (etc.) This is what happens when one doesn't proofread his own post carefully enough. This obviously should have been "diploid vs. tetraploid" not "diploid vs. haploid."...
by matt lustig
Wed Jul 18, 2018 6:34 pm
Forum: Rose Hybridizers Association Forum
Topic: Self-Incompatibility
Replies: 24
Views: 1456

Re: Self-Incompatibility

Karl-- The information about hyacinths is interesting. So too the information regarding Prunus spp., although as a technical note, I am fairly certain that Cerasus is an old genus designation that is no longer accepted. I believe that Cerasus is now considered as part of Prunus (i.e. Cerasus avium i...
by matt lustig
Wed Jul 18, 2018 5:25 am
Forum: Rose Hybridizers Association Forum
Topic: Self-Incompatibility
Replies: 24
Views: 1456

Self-Incompatibility

I have read repeatedly that self-incompatibility is more common in species roses (compared with advanced hybrids) and in diploids (compared with tetraploids, etc.) Do we know anything about the genetic cause of these differences in the extent of self-incompatibility? Note that I'm not asking about h...
by matt lustig
Sat Mar 03, 2018 12:16 pm
Forum: Rose Hybridizers Association Forum
Topic: Darlow's enigma
Replies: 4
Views: 636

Darlow's enigma

I have been intrigued by 'Darlow's Enigma', but I have not yet grown it (so I have no personal experience with it). Can someone clarify what characteristics distinguish it from a pure R. multiflora selection? In my state it is illegal to grow pure multiflora, although not hybrid ramblers with partia...
by matt lustig
Thu Aug 03, 2017 6:39 am
Forum: Rose Hybridizers Association Forum
Topic: Dichotomous Key
Replies: 1
Views: 329

Dichotomous Key

Does anyone know of a good dichotomous key to the eastern US roses? I'm aware of one or two websites with good species information, but wish I had a dichotomous key to be more certain of identification. Lacking one, the most impressive identification source that I've found (for my area) is the book ...
by matt lustig
Wed Jul 12, 2017 10:22 pm
Forum: Rose Hybridizers Association Forum
Topic: R. palustris ploidy
Replies: 9
Views: 1308

Re: R. palustris ploidy

Thanks so much for the interesting insights. Stressing the plant to promote seed production is an interesting idea. I have heard of a similar technique being used with an Oriental fruit tree called jujube (Ziziphus sp.), to increase fruit production. If I recall, in that case the trees were being pa...
by matt lustig
Wed Jul 05, 2017 11:11 pm
Forum: Rose Hybridizers Association Forum
Topic: R. palustris ploidy
Replies: 9
Views: 1308

Re: R. palustris ploidy

Don--Yes, I was specifically asking about the R. palustris that I have seen in the NY/PA region. It sounds like most or all of these specimens will be diploid, although I gather that rare tetraploid specimens may occasionally be present. My own presumed R. palustris were collected (with permission) ...
by matt lustig
Sun Jul 02, 2017 1:03 pm
Forum: Rose Hybridizers Association Forum
Topic: R. palustris ploidy
Replies: 9
Views: 1308

R. palustris ploidy

I understand that there are diploid and tetraploid members of R. palustris. Do we know whether these ploidy levels are distinct geographically? For instance, in an entirely different group of plants (Chelone, a genus of wildflowers), the literature documents that one of the species has distinct ploi...
by matt lustig
Sun Jun 25, 2017 11:01 pm
Forum: Rose Hybridizers Association Forum
Topic: Funny to see roots coming out of nodes of these cuttings
Replies: 15
Views: 1980

Re: Funny to see roots coming out of nodes of these cuttings

I would be interested in cuttings and/or rooted cuttings of this specimen, for use as breeding material. Thanks for your consideration. Please feel free to PM me with details when you have them available. Let me know if I can reimburse shipping or else "trade" something from my own stock.
Thanks!