Weasel Since this question has been brought up I have been scouring the books and information I have on breeding, I had this same question at one point... Take a male branch and cloning it onto the female plant, and while I have nothing which directly gives me this answer. However trying to find this answer walked me back through the things I do know, but to some degree have forgotten to perhaps look at again. The first is "stress" as of course the books and information always brings out the changes which can occur do to being stressed, some strains and plants can take lots and lots of stress and well as we all know there are others who at the first signs of stress have some sort of an issue. One thing which can happen as a result of stress is "mutations" and then it got me going back to the main point of breeding for seeds, you want to always start out with a true FF and that brought me right back in the book to the point of how to find and select a true FF to become a mother. Then I was brought back to the process of how to best select a male for the breeding project. Now let me make it clear this book's goal is to teach you to grow and breed stable strains with the hopes of bring able to bring it to market (commercial or private) where the end customers are happy with the end results they get when they use your seeds.
Well this may not mean anything to the standard grower, I keep coming back to the point in my mind... either someone would want the best genetics, the best of everything you are looking for... or you are looking for the randomness of bag seed outcomes. In the book they do discuss the randomness of cross pollination and how so often this doesn't work so well in nature hence why so much of the natural cannabis crops have such a high fatality rate when left to nature to do its thing, but at the same time only the traits which work for that plant in that environment will stand a real chance of survival which helps to weed out bad genetics in nature. However in the inside environment this doesn't hold true, and genetics good outdoors may not be the genetics you want inside, and thus we get right back to the selective process of making sure we are choosing the right mother and father, verses just randomly. By the time I got done researching this out trying to find the answer... I concluded that it seems to boil down to the point... If the idea of this works of grafting a male branch onto a female plant there is some sort of a major issue with it somehow beyond what I can figure out or find. So many stoners sitting out there trying to bring their own strain(s) to the market, pushing to win that next cannabis cup award, wanting to that guy you listen to and trust on YouTube, in the Forums, etc... if this actually worked out as well as one might hope it does, then it begs the question why aren't more people doing it or talking about it?
The gardening magazines for the year have been arriving and I have been going through them again to plan out what seeds to get, and in most of them they have a couple of these 5-In-1 trees, they will grow 5-Fruits on just one tree and honestly they aren't even that expensive, and I've seen them in their since I was a kid. But in all my years of going to the nursery, other people's gardens that were seriously HUGE, I've never in all my years ever seen anyone have one of those trees. My grandma had 36-different fruit trees, and when I asked about getting one of those she told me the head of the nursery she went too told her to stay away from those trees and don't ever plant one, so she told me the same anytime I ever had a question about them. Thinking of this thread I looked at them and wondered why is it always the same 5-fruits, why nobody ever has one... If this works so well in this fashion why isn't it being done more? Yet I was told by a friend at the nursery a few years back when my one fruit tree died down to the ground, broke off and then shoot up another tree, I assumed it was the fruit tree again, however I was told they use a fast growing root structure to then graft the much slower fruit tree onto the root system to get more fruit trees out the door into customers hands, thus the next tree coming up may be the tree from the actual root system, not the fruit tree I think it is.
Perhaps someone else can take this information and points and help to sort it out a bit more... but that is what has been on my mind relating to this point.