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DJ Short articles

T

The Dragon

If these are true land race varieties and you are using seeds straight from Afghanistan or Thailand from specific regional areas aren't the genetics of these land race varieties composed of increased variation?
No, a true land race variety will be a completely, or at least mostly, in bred line (IBL) with very little variation. However it will have well developed, and stable, characteristics that are desirable. Crossing two land races will open up a huge amount of variation with the variation being proportional to the degree of genetic difference between the two land races.

If so, then wouldn't it be appropriate to stabilize that indigenous strain for the breeding project's parent stock before the initial breeding to the first generation of they hybrid stock?
It's usually not needed, because your land race strains are already stabilized. However, if you land race is crossed with another land race and you want to use that "new" cross for breeding then you will need to stabilize the new pool of genetics created by the crossing of the initial parents.

Are land race seeds popped until the desired traits are discovered and then they hybrid breeding begins?
You would do this regardless of the origin of seeds. Both land race crosses and hybrid crosses benefit from finding parent plants that exhibit the traits you desire.

Or is it that these land race varieties are isolated to where they are stable enough for breeding projects?
They are usually stable already. However, because of the fact that many seeds are sold as "land race" seeds while actually being unstable crosses its a good idea to grow out a bunch of the "land race" seeds and breed them to a more stable form. Unless of course, you know for sure that they are pure and stable already.
 
T

The Dragon

i remeber ready a few years back about dj saying someting about about reverse hermie males were good to breend with, thats how he gets such high female ratios, males that throw the occasional hair, anyone read that , plz show me, id like to read it again

The importance of males that grow a few female flowers (aka Reverse Hermie) is that these plants can carry an X chromosome which expresses feminizing hormones at a level much higher than the average X chromosome. Breeding with such a trait will result, usually, in female seeds that are VERY female and male seeds that are female leaning. If the super X is crossed with a weak Y then a plant that would normally present as male will present as completely female. The ratio of XX (female) to XY (male) doesn't change from the usual 50%:50% but the number of plants that appear to be female will increase by a sizable percentage.
 

farmerlion

Microbial Repositories
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I have had this thread saved in favorites for many years now. Every year before the grow starts I re read many of DJ's articles. So informative and I retain more knowledge with each read. Thank you all. Peace
 

CreeperStipule

Active member
The importance of males that grow a few female flowers (aka Reverse Hermie) is that these plants can carry an X chromosome which expresses feminizing hormones at a level much higher than the average X chromosome. Breeding with such a trait will result, usually, in female seeds that are VERY female and male seeds that are female leaning. If the super X is crossed with a weak Y then a plant that would normally present as male will present as completely female. The ratio of XX (female) to XY (male) doesn't change from the usual 50%:50% but the number of plants that appear to be female will increase by a sizable percentage.

He should never of used them, his F13 is a shit show for intersexual traits. The ratio does change as it increases the female percentage or the monoecious percentage.
If you breed a F-13 population and don't remove the intersex individuals you will see so.
 

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