Search found 980 matches

by henry kuska
Fri Oct 11, 2019 4:53 pm
Forum: Rose Hybridizers Association Forum
Topic: Newbie question
Replies: 12
Views: 334

Re: Newbie question

When you ask about seed germination experience from other hybridizers, I recommend that you consider the type of rose seed that the hybridizer uses. (Common hybrid tea seed behavior may be very different than near species seeds.)
by henry kuska
Fri Oct 11, 2019 4:47 pm
Forum: Rose Hybridizers Association Forum
Topic: Would this work with roses?
Replies: 1
Views: 47

Re: Would this work with roses?

Thank you. Something definitely worth trying.
by henry kuska
Wed Oct 09, 2019 4:07 pm
Forum: Rose Hybridizers Association Forum
Topic: challenges of breeding rose rosette resistent
Replies: 0
Views: 37

challenges of breeding rose rosette resistent

Normally it is hard to get more than the abstract free from some journals. Here is a full paper which should be of interest to rose hybridizers:

https://ucanr.edu/sites/ncpnrose/files/292224.pdf
by henry kuska
Wed Oct 09, 2019 2:01 pm
Forum: Rose Hybridizers Association Forum
Topic: Late breaking California rose rosette virus proposed action
Replies: 3
Views: 81

Re: Late breaking California rose rosette virus proposed action

It appears to me that they are trying, but viruses are a very complicated part of Nature. Progress may be slow.
by henry kuska
Fri Oct 04, 2019 9:20 pm
Forum: Rose Hybridizers Association Forum
Topic: Rose replant disease?
Replies: 13
Views: 223

Re: Rose replant disease?

This is what Dr. Rankin has written: http://www.tenarky.org/Merit_Articles/2009/DrRankinRoseReplantDiseaseNRLMay2009.pdf ---------------------------------------------------- This appeared in a local rose society newsletter that I have great respect for: http://www.marinrose.org/replantdisease.html -...
by henry kuska
Fri Oct 04, 2019 4:46 pm
Forum: Rose Hybridizers Association Forum
Topic: convenient source for a number of pictures of virus infected rose leaves,
Replies: 0
Views: 36

convenient source for a number of pictures of virus infected rose leaves,

Since this includes a number of pictures of infected leaves, this looks like (to me) something that diserves increased publicity.

I do have one question - why is rose spring dwarf virus (RsDaV) not mentioned?

See:

https://ucanr.edu/sites/ncpnrose/files/285819.pdf
by henry kuska
Fri Oct 04, 2019 12:31 am
Forum: Rose Hybridizers Association Forum
Topic: Rose replant disease?
Replies: 13
Views: 223

Re: Rose replant disease?

I used to add Mycorrhizae fungi to the fresh planting soil. (I am no longer active.)
by henry kuska
Thu Oct 03, 2019 12:51 pm
Forum: Rose Hybridizers Association Forum
Topic: black spot research - tetraploid roses
Replies: 0
Views: 58

black spot research - tetraploid roses

"A QTL for resistance to several races of black spot co-located with the known Rrd1 locus in Rosa. A polymorphism in muRdr1A linked to black spot resistance was identified and molecular markers were designed."

See:

https://link.springer.com/article/10.10 ... 19-03443-9
by henry kuska
Sat Sep 28, 2019 11:06 am
Forum: Rose Hybridizers Association Forum
Topic: What Do we know about Black Spot in Roses?
Replies: 1
Views: 67

What Do we know about Black Spot in Roses?

I do not have free access to the full review. Because of the author, I assume that anyone serious about black spot breeding would benefit from reading this review.

https://www.tandfonline.com/doi/abs/10. ... ode=bpts20
by henry kuska
Fri Sep 13, 2019 4:12 pm
Forum: Rose Hybridizers Association Forum
Topic: Any luck with Wasagaming?
Replies: 3
Views: 135

Re: Any luck with Wasagaming?

I tried, but I was not successful.
search.php?keywords=wasagaming+kuska
by henry kuska
Mon Sep 09, 2019 11:03 am
Forum: Rose Hybridizers Association Forum
Topic: Should one experiment using spermidine?
Replies: 1
Views: 101

Should one experiment using spermidine?

Many years ago I was interested in using spermidine to assist germination rates.

This may be another experiment to try.

https://www.nature.com/articles/s41598-019-49280-0
by henry kuska
Tue Sep 03, 2019 10:44 am
Forum: Rose Hybridizers Association Forum
Topic: Pollen "cryopreservation" of 6 modern rose cultivars.
Replies: 0
Views: 71

Pollen "cryopreservation" of 6 modern rose cultivars.

" Pollen cryopreservation of 6 modern rose cultivars. Author(s) : Li ZeDi ; Du Ying ; Jiang XueRu ; Lu YueXiu ; Ren RuiFen ; Zhang YiXuan ; Liu Yan Author Affiliation : College of Landscape Architecture, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National ...
by henry kuska
Sat Aug 31, 2019 8:16 pm
Forum: Rose Hybridizers Association Forum
Topic: Roses to consider for breeding?
Replies: 6
Views: 219

Re: Roses to consider for breeding?

I had an early Carefree Beauty and one that I purchased much later. No comparison. I assume that the second one was virused as were many of Dr. Buck's roses (sooner or later).