Hi all,
I am a biologist interested in genome evolution in the Cannabaceae family (including hop but also tropical trees such as Celtis, Trema, Chaetachme). For my research I am looking into the possibilities of determining a genome sequence of Cannabis. First a bit of introduction:
Determining (assembling) a genome sequence is a hugely complicated puzzle. You can compare it with making a jigsaw puzzle with millions of pieces without knowing what is depicted. People have attempted to assemble Cannabis genomes but the results so far have not been great. I think this is because of the heterozygosity of Cannabis plants. Imagine that our metaphoric jigsaw puzzle contains each piece in two similar but slightly different forms - that would complicate solving the puzzle tremendously!
This is why I would like to have a completely homozygous Cannabis for research purposes. Normally, you can get homozygous plants through inbreeding. I am not a Cannabis breeder and have never grown a Cannabis plant myself. So I know virtually nothing about the practicalities. But what I have learned from various webpages and posts on this forum is that Cannabis plants suffer when they are inbred. They have reduced vigour: their performance deteriorates due to inbreeding depression. To avoid this problem, I understand breeders make backcrosses to maintain heterozygosity and 'hybrid vigour'. On the other hand, I see references to IBLs which are supposedly inbred. So perhaps it is possible to get to a homozygous line.
I am very interested in the advice and experiences of the expert breeders on this forum:
Thanks in advance!
I am a biologist interested in genome evolution in the Cannabaceae family (including hop but also tropical trees such as Celtis, Trema, Chaetachme). For my research I am looking into the possibilities of determining a genome sequence of Cannabis. First a bit of introduction:
Determining (assembling) a genome sequence is a hugely complicated puzzle. You can compare it with making a jigsaw puzzle with millions of pieces without knowing what is depicted. People have attempted to assemble Cannabis genomes but the results so far have not been great. I think this is because of the heterozygosity of Cannabis plants. Imagine that our metaphoric jigsaw puzzle contains each piece in two similar but slightly different forms - that would complicate solving the puzzle tremendously!
This is why I would like to have a completely homozygous Cannabis for research purposes. Normally, you can get homozygous plants through inbreeding. I am not a Cannabis breeder and have never grown a Cannabis plant myself. So I know virtually nothing about the practicalities. But what I have learned from various webpages and posts on this forum is that Cannabis plants suffer when they are inbred. They have reduced vigour: their performance deteriorates due to inbreeding depression. To avoid this problem, I understand breeders make backcrosses to maintain heterozygosity and 'hybrid vigour'. On the other hand, I see references to IBLs which are supposedly inbred. So perhaps it is possible to get to a homozygous line.
I am very interested in the advice and experiences of the expert breeders on this forum:
- Are there any truly homozygous Cannabis strains/lines (not just homozygous for particular traits of interest but for all genes in the genome)?
- How far can one go with inbreeding in terms of reduced vigour? (I would not mind having a poorly growing plant that requires a lot of care. But they should remain alive
Thanks in advance!