Search found 946 matches

by henry kuska
Sun Jun 23, 2019 11:10 am
Forum: Rose Hybridizers Association Forum
Topic: Variegated roses?
Replies: 30
Views: 551

Re: Variegated roses?

If it is an aphid spread virus, it appears that the probability is significant.
by henry kuska
Fri Jun 21, 2019 11:34 am
Forum: Rose Hybridizers Association Forum
Topic: Variegated roses?
Replies: 30
Views: 551

Re: Variegated roses?

Kim, how does your friend know that the rose is not virused?
by henry kuska
Sat Jun 08, 2019 11:07 am
Forum: Rose Hybridizers Association Forum
Topic: Three-year screening for cold hardiness of garden roses
Replies: 0
Views: 61

Three-year screening for cold hardiness of garden roses

They looked at: "Name Synonym Rose type1 Breeder / Author1 Coldest USDA Zone2 Temperature range (°C)3 Ploidy level4 Propagation method 'John Cabot' Hybrid Kordesii Felicitas Svejda 2b −42.8 ∼ −40.0 4x Cutting 'J.P. Connell' shrub Felicitas Svejda 2b −42.8 ∼ −40.0 3x Cutting 'Henry Kelsey' Hybrid Kor...
by henry kuska
Sat May 25, 2019 1:58 pm
Forum: Rose Hybridizers Association Forum
Topic: Best sources for virus free hybrid teas?
Replies: 3
Views: 125

Re: Best sources for virus free hybrid teas?

The most recent Foundation Plant Services at UC Davis web page that I am aware of is at:

https://ucanr.edu/sites/ncpnrose/files/285806.pdf

If anyone is aware of anything more recent, please post.
by henry kuska
Thu May 16, 2019 4:18 pm
Forum: Rose Hybridizers Association Forum
Topic: A.R.T.S. national trial gardens
Replies: 1
Views: 76

A.R.T.S. national trial gardens

"Each year, more rose breeders send their most promising introductions to the A.R.T.S. national trial gardens to be evaluated under low-input conditions across the various U.S. climate regions. Each year’s set of trial roses are grown side by side with two industry standard/control roses that have w...
by henry kuska
Thu May 16, 2019 4:13 pm
Forum: Rose Hybridizers Association Forum
Topic: "assay reveal the presence of rose cryptic virus-1 in the United Kingdom"
Replies: 1
Views: 49

Re: "assay reveal the presence of rose cryptic virus-1 in the United Kingdom"

Here is a general review:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2880111/

" In plants, they appear to persist indefinitely. For example, years of continuous tissue culture, thermotherapy and meristem tip culture were unable to cure plants of partitiviruses (Szegö et al. 2005). "
by henry kuska
Thu May 16, 2019 10:37 am
Forum: Rose Hybridizers Association Forum
Topic: "assay reveal the presence of rose cryptic virus-1 in the United Kingdom"
Replies: 1
Views: 49

"assay reveal the presence of rose cryptic virus-1 in the United Kingdom"

Title: " High throughput sequencing and RT-qPCR assay reveal the presence of rose cryptic virus-1 in the United Kingdom" "A sample with symptoms similar to those caused by rose rosette virus was positive for RoCV1; further studies will be undertaken to investigate if those symptoms were due to mixed...
by henry kuska
Mon May 13, 2019 10:35 am
Forum: Rose Hybridizers Association Forum
Topic: Can anyone update this information?
Replies: 5
Views: 392

Re: Can anyone update this information?

The powerpoints have not yet appeared, but this summary concerning the rose rosette virus has:

https://today.agrilife.org/2019/05/10/r ... XPZ9pTaOh8
by henry kuska
Sat Apr 13, 2019 9:06 pm
Forum: Rose Hybridizers Association Forum
Topic: Can anyone update this information?
Replies: 5
Views: 392

Re: Can anyone update this information?

Today I received an email that the plans are to post (within a month) the presentation powerpoints on the NCPN Rose web site.