Search found 1068 matches

by henry kuska
Sat Feb 13, 2021 10:50 pm
Forum: Rose Hybridizers Association Forum
Topic: Detection and characterization of a second carlavirus in Rosa sp.
Replies: 0
Views: 120

Detection and characterization of a second carlavirus in Rosa sp.

"A new virus resembling members in the genus Carlavirus was identified in an Out of Yesteryear rose (Rosa sp.) by high-throughput sequencing. The virus was discovered during the screening of a rose virus collection belonging to Foundation Plant Services (UC-Davis)." "Based on genome organization, se...
by henry kuska
Sat Feb 13, 2021 10:47 pm
Forum: Rose Hybridizers Association Forum
Topic: Complete genome sequence of rose virus A, the first carlavirus identif
Replies: 0
Views: 80

Complete genome sequence of rose virus A, the first carlavirus identif

"A novel virus was discovered in a Rosa wichuraiana Crep. by high-throughput sequencing and tentatively named "rose virus A" (RVA)." "RVA is the first carlavirus identified in rose and has the highest nucleotide sequence similarity to poplar mosaic virus." See: https://web.a.ebscohost.com/abstract?d...
by henry kuska
Fri Feb 12, 2021 9:35 pm
Forum: Rose Hybridizers Association Forum
Topic: Rose Spring Dwarf virus reported in China
Replies: 0
Views: 109

Rose Spring Dwarf virus reported in China

"............ and rose spring dwarf-associated virus were also identified in both samples with mosaic disease and asymptomatic samples." See: https://www.x-mol.com/paper/1294264051380658176?adv From the full article: "The results showed that RSDaV was present in mosaic (YJ3) and (YJ5) and asymptomat...
by henry kuska
Tue Feb 09, 2021 4:16 pm
Forum: Rose Hybridizers Association Forum
Topic: Prevalence and molecular characterization of Turkish isolates of the rose viruses"
Replies: 0
Views: 90

Prevalence and molecular characterization of Turkish isolates of the rose viruses"

Title: "Prevalence and molecular characterization of Turkish isolates of the rose viruses" See: https://www.sciencedirect.com/science/article/pii/S0261219421000351/pdfft?md5=f7bea2f8f495db6620a9976f6e0ab018&pid=1-s2.0-S0261219421000351-main.pdf Please note that the Highlights could be misinterpreted...
by henry kuska
Sat Jan 23, 2021 1:44 pm
Forum: Rose Hybridizers Association Forum
Topic: recent report contains rose virus information
Replies: 0
Views: 124

recent report contains rose virus information

See:

https://ucanr.edu/sites/natcpn/files/342499.pdf

See the last part of Table 1 for a summary of the rose virus information.
by henry kuska
Sat Jan 09, 2021 11:12 am
Forum: Rose Hybridizers Association Forum
Topic: Another virus that infects roses found
Replies: 2
Views: 203

Re: Another virus that infects roses found

What I am particularly interested in include:


A picture of what the infected leaves look like.


A discussion of how the virus is transmitted.
by henry kuska
Fri Jan 08, 2021 4:19 pm
Forum: Rose Hybridizers Association Forum
Topic: Another virus that infects roses found
Replies: 2
Views: 203

Another virus that infects roses found

"RNA was extracted from ‘Hugh Dickson’ rose leaves displaying virus-like symptoms in Maryland, USA. Using high-throughput sequencing, we identified a new virus, tentatively named “rose virus R”"

See:

https://link.springer.com/article/10.10 ... 20-04927-6
by henry kuska
Mon Nov 30, 2020 8:32 pm
Forum: Rose Hybridizers Association Forum
Topic: Rust
Replies: 8
Views: 756

Re: Rust

California is a very large state with many climatic variations. There is, like in most states, University based agricultural extension service publications which provide information for their climatic conditions. This is what was last updated 2/2020.

http://ipm.ucanr.edu/PMG/PESTNOTES/pn7463.html
by henry kuska
Sat Nov 21, 2020 1:15 pm
Forum: Rose Hybridizers Association Forum
Topic: Sweet Spirit
Replies: 15
Views: 1696

Re: Sweet Spirit

I would suggest one of the red Kordes roses since they were (in general) selected for both hardiness and disease resistance. Illusion is one example.
by henry kuska
Wed Nov 18, 2020 6:32 pm
Forum: Rose Hybridizers Association Forum
Topic: Germinating in soil vs paper towel?
Replies: 8
Views: 553

Re: Germinating in soil vs paper towel?

I prefer sand in baggie. It is easy to see if too wet or not wet enough. The sand can be removed with a strainer without the possibility of damaging the root. Sand does not support mold.
by henry kuska
Thu Oct 29, 2020 3:14 pm
Forum: Rose Hybridizers Association Forum
Topic: Wasagaming seeds
Replies: 6
Views: 622

Re: Wasagaming seeds

Rugosa seeds normally float. Personal experience and: https://cdnsciencepub.com/doi/pdf/10.4141/cjps72-177

I did not apply the float test to my rugosa hybrids. I do not remember any extensive studies regarding the float behavior of first generation (or higher) hybrids.