To answer your earlier question about degrafting:
Either are fine!So my qstn is how to degraft should i just pluck off Sabulata monstrose or cut somewhere
And an update from me:
I finally did another graft try. Hoping this one takes
Either are fine!So my qstn is how to degraft should i just pluck off Sabulata monstrose or cut somewhere
No trick , just cut smaller monacantha and put on Peres I will degraft scion to check monstrose character but after very long tym coz there is only one i have now
It seems from Jitesh Rana's experiments that the infection can be passed only upwards, suggesting this virus or whatever it may be only travels through xylem tissue...? It also seems like only some species are susceptible while others are immune...this thread is becoming more and more interesting. I thought monstrose cacti are just mutants lacking the production of inhibitory hormone (produced in apical meristem, forgot the name), causing all meristem tissues in all areoles to grow, is this the case in some of them?? Or are they all infected with some kind of virus or parasite? So many questions, so little research. I guess it's up to us to figure it out hahaJitesh Rana wrote: ↑Sun Dec 20, 2020 4:17 am Here is proof of monstrose effect passing from Pereskiopsis to cactus
Wow, this is really interesting. I was a bit skeptical but this is a nice A/B. Thank you for sharing!Jitesh Rana wrote: ↑Sun Dec 20, 2020 4:17 am Here is proof of monstrose effect passing from Pereskiopsis to cactus
That hormone is auxin. Specifically the ratio between auxin and another hormone, cytokinin (produced in the roots), determines apical growth vs growth of shoots/pups. A meristem producing less auxin than usual would indeed cause runaway pupping (a plant producing no auxin would likely die eventually)
Infected plants aside, wikipedia says that the apical shoot produces auxin which travels down the stem and inhibits growth of lateral buds. But then, why is it that as soon as the apical shoot is removed, almost invariably in all plants, it is the shoots closest to apical that start growing first? Shouldn't those buds be "the most inhibited"?Shane wrote: ↑Sun May 16, 2021 9:10 pm That hormone is auxin. Specifically the ratio between auxin and another hormone, cytokinin (produced in the roots), determines apical growth vs growth of shoots/pups. A meristem producing less auxin than usual would indeed cause runaway pupping (a plant producing no auxin would likely die eventually)
The apical meristem can't be the whole story since grafting essentially replaces the plant's existing meristem with a new one from an uneffected plant, yet we still see monstrose growth. I would guess indeed it's a virus or other pathogen at work. I think the pathogen either causes decreased auxin production or uptake or increased cytokinin production transportation or uptake
I assumed it was because the area closest to the apex would be the first to run low on auxin. Like if a creek got blocked by something the area closest downstream of the blockage would go dry firstBut then, why is it that as soon as the apical shoot is removed, almost invariably in all plants, it is the shoots closest to apical that start growing first? Shouldn't those buds be "the most inhibited"?