Okay I have a little bit of knowledge , I hope you engage in selective breeding, not sure what you chose but : The phenomenon of hybrid vigor is only found in F1 hybrid crosses (two inbred lines) … F2 generation (brother and sisters children) will have more variation… continuing to select the plants with the desire traits will lead to a more uniform line maybe at f7 or something Back cross children with the mom will give it genes of 25%A 25%B and 50% of back cross mom You can continue to back cross to put more of the back cross percentage and just select for one gene if you end up doing the back cross enough times instead of having a hybrid you’ll have the one heirloom with like 2% of the other Hope this is good info
Yes, what you say is more or less correct. F2 is the most diverse of mom (A) and dad (B). At F1, each plant (AB) is uniform at 50% A and 50% B so breeding an F1 back to A will bring in roughly 75% A and 25% B. That backcross is once again considered an F1. If you selfed AB for the F2 generation, it's the most diverse population of all generations leading to OP so a backcross to A will bring in all manner of unpredictable gene combinations, but with more influence of A. In both cases, it's not a specific percentage, but fore sure, backcrossing every generation to A will bring you closer to the A parent for sure. I do my backcrossing at F2 because most of my gene selection is a tomato recessive gene that only shows up in F2. So, I have to wait until I validate the trait with 100% certainty before backcrossing. A recessive gene in F2 will express every selfed generation afterwards. In this type of cross, if I had a specific trait I was looking for, say bush habbit, I would backcross in the F1 to the parent that had the better bush vs F2. For most of my breeding, I look for unique plants in the F2. Something that is more than both parents--usually taste and shape. I seldom backcross because each backcross takes away from new, unique combination of traits, in the F2. Instead, selfing has a 75% chance of keeping that trait. To sum up, in tomato I want to retain parthencarpy in tomato from A (recessive) so I have to identify that gene in F2, then backcross to B for more disease resistance, then self in F1, and grow out a ton of F2s to evaluate both parthenocarpy and increased disease resistance. It's very purposeful for tomato. In cucurbits, it's more of an art for me as I look for unique specimens, different from A or B, in F2 and self the best ones which are often taste/appearance. In the F2, there are often traits that neither parent has that may express such as a recessive gene. An F2 could be sweeter, have stripes, branch more, have more disease resistance, etc.
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Okay I have a little bit of knowledge ,
I hope you engage in selective breeding, not sure what you chose but :
The phenomenon of hybrid vigor is only found in F1 hybrid crosses (two inbred lines) …
F2 generation (brother and sisters children) will have more variation… continuing to select the plants with the desire traits will lead to a more uniform line maybe at f7 or something
Back cross children with the mom will give it genes of
25%A 25%B and 50% of back cross mom
You can continue to back cross to put more of the back cross percentage and just select for one gene if you end up doing the back cross enough times instead of having a hybrid you’ll have the one heirloom with like 2% of the other
Hope this is good info
Yes, what you say is more or less correct.
F2 is the most diverse of mom (A) and dad (B). At F1, each plant (AB) is uniform at 50% A and 50% B so breeding an F1 back to A will bring in roughly 75% A and 25% B. That backcross is once again considered an F1. If you selfed AB for the F2 generation, it's the most diverse population of all generations leading to OP so a backcross to A will bring in all manner of unpredictable gene combinations, but with more influence of A. In both cases, it's not a specific percentage, but fore sure, backcrossing every generation to A will bring you closer to the A parent for sure. I do my backcrossing at F2 because most of my gene selection is a tomato recessive gene that only shows up in F2. So, I have to wait until I validate the trait with 100% certainty before backcrossing. A recessive gene in F2 will express every selfed generation afterwards. In this type of cross, if I had a specific trait I was looking for, say bush habbit, I would backcross in the F1 to the parent that had the better bush vs F2. For most of my breeding, I look for unique plants in the F2. Something that is more than both parents--usually taste and shape. I seldom backcross because each backcross takes away from new, unique combination of traits, in the F2. Instead, selfing has a 75% chance of keeping that trait. To sum up, in tomato I want to retain parthencarpy in tomato from A (recessive) so I have to identify that gene in F2, then backcross to B for more disease resistance, then self in F1, and grow out a ton of F2s to evaluate both parthenocarpy and increased disease resistance. It's very purposeful for tomato. In cucurbits, it's more of an art for me as I look for unique specimens, different from A or B, in F2 and self the best ones which are often taste/appearance. In the F2, there are often traits that neither parent has that may express such as a recessive gene. An F2 could be sweeter, have stripes, branch more, have more disease resistance, etc.
@@C3Voyagesuch an amazing comment bud, I just learned these things from this guy zaza genetics he deals with breedings . Such an interesting topic man
@@C3Voyage bro thanks for your time and energy im loving this breeding topic
@@TheSturdy1 You bet.
Im into canna but canna breeding isn’t a thing yet , im forced to get my info from other plants and animals