Search found 1241 matches

by Karl K
Tue Nov 12, 2019 3:14 pm
Forum: Rose Hybridizers Association Forum
Topic: Basye's "Probable Amphidiploid" now extinct?
Replies: 10
Views: 164

Re: Basye's "Probable Amphidiploid" now extinct?

On the more hopeful side, another such amphidiploid (probable or genuine) could be produced by anyone who had the right "parts". While checking on possible progeny of Basye's plant, I saw what appears to be something even more interesting: Kim Rupert's self-seedling from Basye's. White (mostly) and ...
by Karl K
Sun Nov 10, 2019 1:17 pm
Forum: Rose Hybridizers Association Forum
Topic: Questions about seedlings traits
Replies: 18
Views: 374

Re: Questions about seedlings traits

And more info on AVIs: Molecular Plant 3(1): 78-90 (Jan 2010) The Formation of Anthocyanic Vacuolar Inclusions in Arabidopsis thaliana and Implications for the Sequestration of Anthocyanin Pigments Lucille Pourcel, Niloufer G. Irani, Yuhua Lu, Ken Riedl, Steve Schwartz, Erich Grotewold ABSTRACT Anth...
by Karl K
Thu Nov 07, 2019 5:09 pm
Forum: Rose Hybridizers Association Forum
Topic: Question about seed ripening and pollen parent
Replies: 15
Views: 390

Re: Question about seed ripening and pollen parent

Acta Horticulturae 961(961): 593-598 (Oct 2012) Immature seed rescue and abscissic acid quantification in Rosa hybrida L. suggest early and transient endodormancy. Luca Pipino, Marie-Christine Van Labeke, Andrea Mansuino Abstract: Breeding is a long process in the rose industry. Premature death of d...
by Karl K
Wed Nov 06, 2019 1:09 am
Forum: Rose Hybridizers Association Forum
Topic: Strange hips
Replies: 4
Views: 107

Re: Strange hips

I have seen this, now and again. Here's an example from 'Café Olé"
Image

Another oddity, a shoot growing apparently from an ovule of 'Marquise Boccella'.
Image
by Karl K
Mon Nov 04, 2019 5:14 pm
Forum: Rose Hybridizers Association Forum
Topic: Environment and gene expression
Replies: 18
Views: 589

Re: Environment and gene expression

I was studying the structure of rosacyanins, and it occurred to me that Stoddard's (1980) gray and orange seedling might have gained its ground color from a pelargonidin-based rosacyanin. The orange margin would be callistephin [pelargonidin-3-monoglucoside], corresponding to the ruby border of 'Ang...
by Karl K
Fri Nov 01, 2019 12:42 pm
Forum: Rose Hybridizers Association Forum
Topic: Questions about seedlings traits
Replies: 18
Views: 374

Re: Questions about seedlings traits

I edited my Pigments biblio, putting a box around the Rosacyanin articles, and another around the AVIs papers. I only had two of the latter, so I went in search of another. It's a good one. On another thread I wrote about rosacyanins and noted that when the gene-splicers persuaded roses to produce d...
by Karl K
Fri Nov 01, 2019 12:24 am
Forum: Rose Hybridizers Association Forum
Topic: Questions about seedlings traits
Replies: 18
Views: 374

Re: Questions about seedlings traits

I was just thinking of the variability of fragrance (person to person, but also location to location) and wondering if that is true for leaves and mossing as it is for flowers? Then I read the last two items and realized it is just as true for color. I thought of Queen of Violets as, well Violette ...
by Karl K
Thu Oct 31, 2019 1:35 pm
Forum: Rose Hybridizers Association Forum
Topic: Questions about seedlings traits
Replies: 18
Views: 374

Re: Questions about seedlings traits

I found it: Louis XIV. Sometimes velvety crimson, or velvety violet, or rarely dark brown ... depending on the weather.
http://bulbnrose.x10.mx/Roses/Rose_Pict ... isXIV.html
Image
by Karl K
Thu Oct 31, 2019 12:44 pm
Forum: Rose Hybridizers Association Forum
Topic: Questions about seedlings traits
Replies: 18
Views: 374

Re: Questions about seedlings traits

The "secret" is probably moisture, and cooler temps. Scott-Montcrieff (1936) "The most interesting case recorded is that of the rose "Veilchenblau", which appeared to develop less blue-red flowers in the very dry 1934 season than normally. The bluer petals were separated and found to contain complex...
by Karl K
Thu Oct 31, 2019 10:31 am
Forum: Rose Hybridizers Association Forum
Topic: Questions about seedlings traits
Replies: 18
Views: 374

Re: Questions about seedlings traits

There is nothing behind Cotillion that should lead to scented foliage. Wouldn't you think it odd that if it had that characteristic, no mention of it has been made anywhere else? Nothing in any advertising and no mention anywhere in the comments nor reference section on HMF. I never noticed it havi...
by Karl K
Wed Oct 30, 2019 7:01 pm
Forum: Rose Hybridizers Association Forum
Topic: Questions about seedlings traits
Replies: 18
Views: 374

Re: Questions about seedlings traits

LEMON DELIGHT is a yellow-flowered mini-moss that has scented moss that some of us think spells of lemon. Maybe that's just wishful thinking on my part, but it's not the ordinary moss scent. I found the following on another site: https://www.houzz.com/discussions/1643117/fragrant-leaves-what-s-with-...
by Karl K
Sun Oct 27, 2019 10:31 pm
Forum: Rose Hybridizers Association Forum
Topic: Question about seed ripening and pollen parent
Replies: 15
Views: 390

Re: Question about seed ripening and pollen parent

I was rereading the above paper and found this bit that relates to the gene-splicing of petunias discussed in another thread: "Virtually no information is available about rapid genomic changes or epigenetic effects in spruce. Genomic imprinting is, however, being increasingly accepted as a fundament...
by Karl K
Sat Oct 26, 2019 5:04 pm
Forum: Rose Hybridizers Association Forum
Topic: Question about seed ripening and pollen parent
Replies: 15
Views: 390

Re: Question about seed ripening and pollen parent

This is the example I had in mind: Adaptation in Plant Breeding (1997) pp. 82-83 edited by P.M.A Tigerstedt Adaptive properties of Picea abies progenies are influenced by environmental signals during sexual reproduction Øystein Johnsen & Tore Skrøppa Full-sib comparisons In order to give conclusive ...
by Karl K
Sat Oct 26, 2019 1:35 pm
Forum: Rose Hybridizers Association Forum
Topic: Question about seed ripening and pollen parent
Replies: 15
Views: 390

Re: Question about seed ripening and pollen parent

In a past Gudin et al. paper they looked at pollinations done at different temperatures and besides impact of temperatures on speed of embryo development and later testa thickness and dormancy associations, there were differences between males on the same female for germination. It seems like the f...
by Karl K
Thu Oct 24, 2019 12:39 am
Forum: Rose Hybridizers Association Forum
Topic: Question about seed ripening and pollen parent
Replies: 15
Views: 390

Re: Question about seed ripening and pollen parent

Probably there is a species effect, but once you mix a few you can really only talk of cultivars. We don't really know the % of various species in most old roses except where we can see leaf shape, types of prickles, stem color, flower appearance. And these need not be linked to seed formation and ...
by Karl K
Wed Oct 23, 2019 1:46 am
Forum: Rose Hybridizers Association Forum
Topic: Questions about seedlings traits
Replies: 18
Views: 374

Re: Questions about seedlings traits

Is it normal for a seed parent to (pink) to give several other colors, especially when dealing with so few seeds? Is it valuable? Or is that a pretty normal result? It is not unusual for roses to give odd assortments of colors. Pollen parents contribute as much as the mothers, and tetraploids (like...
by Karl K
Wed Oct 23, 2019 1:26 am
Forum: Rose Hybridizers Association Forum
Topic: Question about seed ripening and pollen parent
Replies: 15
Views: 390

Re: Question about seed ripening and pollen parent

Risley: Male Controls Sprouting (1958) http://bulbnrose.x10.mx/Roses/breeding/RisleySprout1958.html This is an interesting paper, but Risley got a bit tangled in words. He seems to have assumed that sprouting (appearing above the soil surface) is equivalent to germination. Not necessarily. Two seedl...
by Karl K
Thu Oct 17, 2019 11:39 am
Forum: Rose Hybridizers Association Forum
Topic: Environment and gene expression
Replies: 18
Views: 589

Re: Environment and gene expression

I recall Tropicana had a novel pigment or pathway for pelargonidin for a rose though I don't offhand remember the particulars. Do you have anything on it? I think Eugster mentioned it maybe. Don, I had to do some searching, and quickly learned that 'Tropicana' is also the name of a variety of leaf ...
by Karl K
Mon Oct 14, 2019 10:34 am
Forum: Rose Hybridizers Association Forum
Topic: Environment and gene expression
Replies: 18
Views: 589

Re: Environment and gene expression

I speculated above about the possibility of a rosacyanin based on pelargonidin. No need to speculate. In fact, I already have a link to a paper that mentions one. 5-carboxypyrano pelargonidin 3-glucoside (36) has been isolated from extracts of strawberries (Andersen et al., 2004). http://bulbnrose.x...
by Karl K
Sun Oct 13, 2019 2:55 pm
Forum: Rose Hybridizers Association Forum
Topic: Environment and gene expression
Replies: 18
Views: 589

Re: Environment and gene expression

I was rereading Eugster & Märki-Fischer (1990) and noticed a possible solution to a minor mystery. http://bulbnrose.x10.mx/Roses/breeding/EugsterPigments1991/EugsterPigments1991.html Where did 'Veilchenblau' get its color? The answer seems to be that 'Crimson Rambler' is colored by peonin as well as...