Grafting Avocado

Marmot1 says...
This is a wrong idea/stereotype definitely. As I graft 3 types (2 B types/1 A type) onto one tree, yet, there's a match issue for A/B scions to A/B rootstocks (and this will after the success rate), sometimes, the rootstocks (shepard/bacon)are weak, but after grafting, say, hass scions, they outgrow some on reed rootstock.
Bacon on hass rootstock--I thought it might make bacon a little dwarf, perhaps it truely is (perhaps they should have been bigger than current), however, I noticed one bacon tree on hass is the biggest among types.
I don't have enough samples, and don't want to do any experiments on this.
One thing is sure, several types on one rootstock, the most aggressive one.
It brings up one point--selection, even as small as hass seeds, several of which might become wonderful as rootstocks--then we come to a new stage--clonal rootstocks.

I have an idea, someone can sow zutano/reed/velvick seeds into soil, and irrigate them with tap water (perhaps add more salt), the ones which survived can deal with salty water, and perhaps water clogging.

Avo L134 says...
Ok. The success is more to do with quality of your rootstock and nothing to do with whether it’s type A or B.