Google has all the info.

List of Varieties

Seed Sellers

Suppliers - Johnny's, Jung, Parks, Gourmet Seeds, Mitchell's Seeds, etc.

Hope this helps.

Dave

If you want to deal with breeders, You need to look at Syngenta, Seminis, Sakata, D. Palmer, Known - You, Harris Moran etc. There are several Chinese, Thai and Indian seed developers as well.

Here is a link that might be useful: Syngenta

Ok. thanks for your help.
Please tell which of the Gynocious varieties are the most outstanding performer among the all.
If there is any which is famous due to it downy mildew resistance capacity.
Awaiting assistance.
Thanks to all who help.

https://www2.ag.purdue.edu/hla/fruitveg/MidWest%20Trial%20Reports/2012/01-01_McGrath_Cucumber.pdf. Marketmore 76 was developed for DM resistance, but a new strain has developed which renders M 76 susceptible. At present there does not appear to be any variety with good resistance.

I have grown Diva, Johnny's two years in a row. Last year in unheated greenhouse, this year in GH and outside. I have had only minor problems with Downy Mildew, markedly less than Lemon Cucumber (outside). I have been overrun with cucumbers both years, despite having half as many planted this year as last.
Do I need to be concerned about a new strain of DM for next years crop?
KateQ