Search found 1309 matches

by Karl K
Sat May 23, 2020 11:05 am
Forum: Rose Hybridizers Association Forum
Topic: Multiflora Rose review
Replies: 3
Views: 218

Re: Multiflora Rose review

American Rose Annual 49: 159-164 (1964) Stock-Scion Relationships in Roses Griffith J. Buck ...it has been observed that when the same scion variety of hybrid tea rose is grafted upon different understocks there is definite understock-stem effect upon scion growth. If understocks with chilling requi...
by Karl K
Thu May 21, 2020 10:56 am
Forum: Rose Hybridizers Association Forum
Topic: Is pollen's DNA the same on all flowers of a plant?
Replies: 6
Views: 234

Re: Is pollen's DNA the same on all flowers of a plant?

Some flowers on a given plant have more or fewer petals and different coloration. The cause doesn't seem to be cultural--that is, different amounts of sun on that flower, nor different amounts of water on the petal, nor insect damage. Is the genome of two flowers on the same plant identical or woul...
by Karl K
Tue Apr 07, 2020 1:26 am
Forum: Rose Hybridizers Association Forum
Topic: Rose “Ploids” made easy by P Wright
Replies: 17
Views: 392

Re: Rose “Ploids” made easy by P Wright

roseseek wrote:
Tue Apr 07, 2020 1:11 am
Yes, Karl, it was a lot of work, but it TAUGHT you what you have used through today. And, it was FUN, wasn't it?
Oh, yeah! My independent researches have always been more satisfying than any paid work I've done. Sometimes fun, often frustrating and sometimes maddening. But I can't give it up.
by Karl K
Tue Apr 07, 2020 1:23 am
Forum: Rose Hybridizers Association Forum
Topic: Rose “Ploids” made easy by P Wright
Replies: 17
Views: 392

Re: The Re: Rose “Ploids” made easy by P Wright

In meiosis the count is halved and it fuses another gamete. Diploid 14 +diploid 14= 28 chromosomes The final count has to be divisible by2 Crossing a dip with a tetra ends up with 21 chromosomes is to not divisible by 2 thus infertile. A triploid. There are exp aneuploids, and reduces gametes. You ...
by Karl K
Tue Apr 07, 2020 1:08 am
Forum: Rose Hybridizers Association Forum
Topic: Rose “Ploids” made easy by P Wright
Replies: 17
Views: 392

Re: Rose “Ploids” made easy by P Wright

Congratulations! I learned SO much be simply reading MR 8 thirty-plus years ago. I did MR 5. I went through the whole book marking the varieties that originated as sports (excluding the climbing sports, which are WAY too common). I then went back and wrote the variety and its sport-parent on a slip...
by Karl K
Tue Apr 07, 2020 1:03 am
Forum: Rose Hybridizers Association Forum
Topic: Rose “Ploids” made easy by P Wright
Replies: 17
Views: 392

Re: Rose “Ploids” made easy by P Wright

Thoroughly enjoyed this RoseBulb archived 1964 Wright article on rose chromozones. Works for educating “ploids” newbies like moi. Enjoyed the discussion on “china teas and gallica theory” and Hazeldean. Best take away for me was if l want a smoother start to hybridizing, begin with “like ploids cou...
by Karl K
Fri Mar 27, 2020 11:21 am
Forum: Rose Hybridizers Association Forum
Topic: Skinner Experience
Replies: 4
Views: 262

Re: Skinner Experience

Skinner's comment about getting better results from Rosa virginiana alba than from the normally colored form gave me the opportunity to organize some other cases where mutant varieties gave better or more variable progeny than the type.

http://bulbnrose.x10.mx/KKing/MutantBreeding.html
by Karl K
Wed Mar 25, 2020 1:59 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

We may need to rethink some of the orange Polyanthas that "blue" to give an odd effect. For instance, 'Golden Salmon': http://bulbnrose.x10.mx/Roses/Rose_Pictures/G/goldensalmon.jpg And to a lesser degree, 'Orange Cameo': http://bulbnrose.x10.mx/Roses/Rose_Pictures/O/OrangeCameo3.jpg However, the pi...
by Karl K
Wed Mar 25, 2020 10:24 am
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

Yes, they do look like similar examples. And I note that one picture of 'Leonidas' is very dusky-purple, while another is more orange-yellow bicolor. https://www.helpmefind.com/rose/l.php?l=21.222715 https://www.helpmefind.com/rose/l.php?l=21.179163 The first rose of this coloring I knew was 'Smoky'...
by Karl K
Tue Mar 24, 2020 6:48 pm
Forum: Rose Hybridizers Association Forum
Topic: Misfit seedlings, anyone?
Replies: 2
Views: 258

Re: Misfit seedlings, anyone?

De Vries (1906) made a study of such monstrosities, selecting plants that produced the highest percentage. Some strains had 3, 4, even 5 cotyledons. Others had two cotyledons fused into a single organ. And other strangenesses. Alas, he made no mention of any associated traits -- beneficial or otherw...
by Karl K
Tue Mar 24, 2020 6:41 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

I guess I wasn''t so far off base when I tried to combine purple with orange. 'Black Tea' combines orange vacuoles (pelargonidin glycosides), with blue spherical bodies. Journal of the Faculty of Science, Shinshu University 23(1): 61-67 (1988) Studies on the Development of Black Brown Color in Rose ...
by Karl K
Sat Mar 21, 2020 9:44 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

More of Yasuda's related research: Studies on the insoluble states of anthocyanin in rose petals Hitoshi Yasuda Jour. Fac. Sci. Shinshu Univ. 9: 63-69 (1974) I. The insoluble state of anthocyanin and its relationship to petal color, together with a new instance of this relationship. Abstract The upp...
by Karl K
Thu Mar 19, 2020 4:19 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

Jour. Fac. Sci., Shinshu University 13(1): 79-86 (June 1978) V. A Survey of the Various Bluing Types Hitoshi Yasuda and M. Kikuchi One hundred and forty five rose cultivars, including old roses, were used to determine the various bluing patterns of red rose petals. The upper epidermis of fresh petal...
by Karl K
Tue Mar 17, 2020 4:18 pm
Forum: Rose Hybridizers Association Forum
Topic: Strat Question
Replies: 6
Views: 216

Re: Strat Question

The effects of temperature extremes are not always immediately apparent. Maize Newsletter Issue 21 (1947) Maize and Heat D. F. Jones Varieties of corn grown in the Northeast and in the Middle West at the same latitude are noticeably taller in the East. Several environmental conditions are involved i...
by Karl K
Tue Mar 17, 2020 2:34 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

Some further info on "blue" roses, this time derived from varieties that "blue" with age. I haven't read the whole series (seven so far), but I wanted to report them here for anyone else who might be interested. The first link leads to I, II and VI. The other reports have separate links, except for ...
by Karl K
Tue Mar 17, 2020 2:28 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

roseseek wrote:
Tue Mar 17, 2020 2:02 am
Hi Karl, did you count Ernie's ploidy? It isn't listed on HMF as triploid and that should be something we'd like to add if it is known to be. Thank you.
No, I just guessed that a tetraploid pollinated by a diploid would probably yield a triploid.
by Karl K
Mon Mar 16, 2020 1:53 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

There appears to be some overlap in the materials involved in making roses mauve/purple. According to Harborne (1976), the purple of 'Reine des Violettes' is due to the ordinary cyanidin 3,5-diglucoside co-pigmented with large amounts of gallotannin. Mauve roses, to the contrary, have the gallic aci...
by Karl K
Sun Mar 15, 2020 1:01 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

My first cross (Sweet Chariot x Margo Koster) was somewhat similar. I had a wacky hope that I might get something purple with orange undertones, or orange with purple-bronze shadings. Nope! What I got was a charming plant with flowers that opened rose pink then changed to lilac pink by the second da...
by Karl K
Sun Mar 15, 2020 12:35 pm
Forum: Rose Hybridizers Association Forum
Topic: silver nanoparticles use in vitro culture
Replies: 5
Views: 236

Re: silver nanoparticles use in vitro culture

Charcoal isn't as exotic as silver, but here's an oldie from Feast, one of the earliest breeders working with Rosa setigera. Magazine of Horticulture 8: 83-85 (March 1842) Nursery of Mr. Samuel Feast "Some experiments upon the growth of plants in charcoal have been made here. Mr. Feast had quite a c...
by Karl K
Thu Mar 12, 2020 2:21 pm
Forum: Rose Hybridizers Association Forum
Topic: Apples and Oranges
Replies: 28
Views: 873

Re: Apples and Oranges

All info is helpful. I assume your 'Gemini' is the orange Polyantha rather than the pink HT. If so, do you have a picture to upload to HelpMeFind? The picture on the patent is useless, and I could not find a better one. If any of your seedlings seem worth keeping, they should carry the relevant fact...