Post by danielricks on Oct 8, 2020 23:03:24 GMT -8
Hi all, I'm new here, hoping I'm not being too forward with my first post, but I'm excited to learn from you all! I'm diving deep into growing tomatoes, very little experience with potatoes so far, but I'm looking forward to experimenting with TPS when the time soon comes that I'll dive deeper into a staple crop like taters.
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Does anyone have experience with growing tomatoes with Intense Pigment (Ip) genetics, or know where/how I could access seeds for a variety with Ip? I know Tom Wagner mentions in some of his different media that he has experimented some with high pigment genetics.
Based on what I've learned about it, I'm hoping to explore using it in an amateur breeding project. I know the TGRC has some accessions with Ip introgressed from a wild relative, but of course they specify that their germplasm isn't available to non-researcher-amateur breeders like me. I've tried searching the GRIN, but haven't found anything yet, although perhaps I just haven't gotten good enough searching that database. I would really appreciate the opportunity to purchase, trade or receive seeds from any of you that may have access to lines with Ip in them.
For context, here's more on what I've read so far about Ip: This is one of the 'high pigment' genes, that causes a darker leaf color, a darker color of unripe fruits, and higher carotenoid levels, among other things. Ip shows dominant inheritance, while three of the other high pigment genes are recessive (hp1, hp2, and dg). However, compared to hp1, hp2, and dg, Ip is said to have a more moderate phenotype, not as dark and not as consistently dark as these others.
hp1 interested me the most at first, until I learned about the negative effects that hp1, hp2, and dg have all had on seedling mortality, brittle stems, reduced growth and yield. BUT here's the thing: Ip is reported to Not have those negative effects, and so even if it doesn't have as pronounced or as consistently high pigment as the other high pigment genes, it seems like there would actually be a hope of generating a healthy plant with it with somewhat darker fruit and higher carotenoids.
I'm somewhat baffled by how Ip seems to have largely been ignored compared to hp1, hp2, and dg. With searches, you'll find a Lot more information on these other 3, where in the beginning of the researchers' work, they acknowledge that there is another one called Ip but that it doesn't produce as pronounced of an effect and then they move onto other experiments with only the top candidates like hp2, despite the terrible pleiotropic effects. It seems like it gets lost in people's desire for the extreme. I say I'm baffled, but then I need to include myself in that because I remember a time reading a paper that dealt with these genes, and I remember consciously blowing past the mention of Ip in favor of learning about the more extreme ones like hp1.
Thoughts? Experiences? Ideas on how I can get a hold of some seeds to try out? Thanks in advance for any insight you can give.
For context, here's more on what I've read so far about Ip: This is one of the 'high pigment' genes, that causes a darker leaf color, a darker color of unripe fruits, and higher carotenoid levels, among other things. Ip shows dominant inheritance, while three of the other high pigment genes are recessive (hp1, hp2, and dg). However, compared to hp1, hp2, and dg, Ip is said to have a more moderate phenotype, not as dark and not as consistently dark as these others.
hp1 interested me the most at first, until I learned about the negative effects that hp1, hp2, and dg have all had on seedling mortality, brittle stems, reduced growth and yield. BUT here's the thing: Ip is reported to Not have those negative effects, and so even if it doesn't have as pronounced or as consistently high pigment as the other high pigment genes, it seems like there would actually be a hope of generating a healthy plant with it with somewhat darker fruit and higher carotenoids.
I'm somewhat baffled by how Ip seems to have largely been ignored compared to hp1, hp2, and dg. With searches, you'll find a Lot more information on these other 3, where in the beginning of the researchers' work, they acknowledge that there is another one called Ip but that it doesn't produce as pronounced of an effect and then they move onto other experiments with only the top candidates like hp2, despite the terrible pleiotropic effects. It seems like it gets lost in people's desire for the extreme. I say I'm baffled, but then I need to include myself in that because I remember a time reading a paper that dealt with these genes, and I remember consciously blowing past the mention of Ip in favor of learning about the more extreme ones like hp1.
Thoughts? Experiences? Ideas on how I can get a hold of some seeds to try out? Thanks in advance for any insight you can give.
Daniel Ricks