Rose Hybridizers Association Forum

Another source regarding this interesting subject: https://www.sciencedaily.com/releases/2 ... 212931.htm

Perhaps two interesting papers: http://www.fimek.edu.rs/downloads/casop ... _45-50.pdf and https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3594942/

Here is the link: https://rosebreeders.org/embryoculture.pdf
Simple Embryo Culture for Plant Breeders, Donald J. Holeman, Rose Hybridizers Association

My developed seed-starting mix contains a sterilized lightweight potting soil without fertilizer, which retains water well. In addition I use 1 part Quartz Sand, 1 part Perlite, 1 part Vermiculite and 1 part Worm Castings well mixed and slightly moisted. This composition will be put in airtightly se...

I made my best experiences with putting stems (about 6 inch) with upper leaflets and hips in a pot with light humid flower soil without fertiliser in a little plastic or indoor greenhouse under LED daylight (6500 K), 10-12h per day, with one or two tomatoes and apples put around. The mixture of both...