Search found 1057 matches

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: 93

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: 93

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: 6
Views: 504

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: 1481

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: 399

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: 525

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.
by henry kuska
Thu Oct 01, 2020 12:40 am
Forum: Rose Hybridizers Association Forum
Topic: Seeds and RRV
Replies: 12
Views: 979

Re: Seeds and RRV

Interesting question. Perhaps your experience could contribute to the science,
by henry kuska
Wed Aug 26, 2020 9:05 pm
Forum: Rose Hybridizers Association Forum
Topic: science review of light's effect on roses
Replies: 0
Views: 707

science review of light's effect on roses

https://pdf.sciencedirectassets.com/271177/1-s2.0-S0304423800X01525/1-s2.0-0304423890900319/main.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjEPn%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJIMEYCIQDJEBZL2cAVanoj1Is%2FXv3PfC9aH28yaKapGONNIi9AmAIhAKH2KiLSnge6YFVVJN2LV5S2xPSRQRP3TvIyKoAQfzmQKr0DCOH%2F%2...
by henry kuska
Fri Aug 14, 2020 1:02 pm
Forum: Rose Hybridizers Association Forum
Topic: NCPN-Roses Meeting JUly 22, 2020
Replies: 6
Views: 1007

Re: NCPN-Roses Meeting JUly 22, 2020

Thanks David for the complete reply. I am not familiar with Nanopore sequencing. It may be useful to the NCPN due to the lower cost: "Nanopore sequencing has several advantages such as the relatively low cost compared to other HTS technologies, high mobility due to the sequencer small size and rapid...
by henry kuska
Thu Aug 13, 2020 10:15 pm
Forum: Rose Hybridizers Association Forum
Topic: NCPN-Roses Meeting JUly 22, 2020
Replies: 6
Views: 1007

Re: NCPN-Roses Meeting JUly 22, 2020

The NCPN 2019 meeting estimated the cost of HTS as $350. slide 27 of 30 https://ucanr.edu/sites/ncpnrose/files/316401.pdf ----------------------------------------------------------- Having a reliable testing method is a primary necessity for developing a clean plant program. However, it is not the o...
by henry kuska
Sun Aug 09, 2020 12:18 am
Forum: Rose Hybridizers Association Forum
Topic: NCPN-Roses Meeting JUly 22, 2020
Replies: 6
Views: 1007

Re: NCPN-Roses Meeting JUly 22, 2020

This series of slides has to do with a comparison of how the accuracy of the previous type of tests compares with high throughput sequencing (HTS). Please note that even PCR misses some infections. https://ucanr.edu/sites/ncpnrose/files/330324.pdf ----------------------------------------------------...
by henry kuska
Thu Jul 30, 2020 1:50 pm
Forum: Rose Hybridizers Association Forum
Topic: Asymmetrical canina meiosis research
Replies: 1
Views: 365

Asymmetrical canina meiosis research

Link timed out see karl's in next post. Thank you Karl.