What's new
  • As of today ICMag has his own Discord server. In this Discord server you can chat, talk with eachother, listen to music, share stories and pictures...and much more. Join now and let's grow together! Join ICMag Discord here! More details in this thread here: here.

Back crossing to female vs male

Fuel

Well-known member
Veteran
And as always pedigree of varieties is highly influential.

Seriously, in practice it will suffer a lot the comparison. I agree that the pedigree have today an enormous weight in the market (see all the hyped masterkush cuts wich are theyr own brand in certain manner), but it's only a customer's side effect. The best examples imho being the sour diesel madness terminated by the coop of GHS. Today you can buy it "near bulk" for a relative good price, even if the seeds are old.

But for me it's more about the direct lineage that a true pedigree. Today more that before, the majority of seedbanks are simply unable to produce the true pedigree of theyr lines. Like it's done with dogs, horses etc ... because if they take the time to do it, they will disapear from the radars and from the interrest of the modern customers.

Sadly, i consider that without a solid pedigree full of informations you're simply unable to select anything. That's a pretty radical sentence but in practice it's simply logical. And it eat a lot of seeds lol

Backcrossing is largely a marketing technique. To push a clone only name. But it's going to be it's own and not the clone.

I understand what you mean, and i have the names that you don't drop in head. But i don't agree, backcrossing is an usefull tool to stabilize an IBL project too. I don't blame the guys wich are dedicated to outcross everything they can, generally with the same male, because it's a key of success today. And i prefer a million times guys wich do that, that chems-fems factories.

I just blame them to let people think that this technic (BX) is a lazzy ass way or the golden road to fix a specimen in a reg line. When you dig a combination of gens on a long term, you accept that you will loose maybe twos to four generations "for the science". It's when to BX a line can be usefulll (too). One more time i'm speaking about regular backcrossing and absolutly not selfing.

Like the example i've quoted, if you're too agressive in reducing the flowering time you will hit the maturity specs of your line. It mean a decrease in the duration of the high, taste nuancies, more trichomes but less valuable (i call that the "cacti effect") etc ... if you was enough clever to backup earlier a parralel "strong line" from the same P1 it's when the BX become a lifesaver. You're able to reinject (one or a fews time, depend on the agressivity of the "shortened" generation) the potency/quality again without destructing the work you've done previously. I compare that with the setting of a carburator "rich/poor" that BX offer in this specific case.

The appreciation foe males is not there for a male market. Plenty of hope popping beans for high quality males. Although i have seen growing rep for breeders males like with Bodhi. Most seedmakers there is not more than a whisper of their males.

The most expensive cuts that i've seen offered was males cuts. But as breeding stock and between twos companies. Enough to buy a car with a funny motor.

I will never say enough that males are the key of the quality in almost everything. Good ones never do the things half like females, they transform anything you outcross in a yielder, a H bomb potency, a frosted as hell buds ... the hard part being to identify them with time.

I agree that the paradox is that the males reign is over since a good decade (lol) Near to the point that a lot of people consider it as useless in the equation. In another hands, they are the first to don't understand in front of a cone how a simple worked skunk#1 can handle the most hyped polyhybrids they have. It's why i think now that "real cups with real people" are becoming critical and vital for the global quality. And to reduce the part of marketing in knownledges by the shock of concrete examples.

A lot of people will disagree, but the more you give importance to your females buds instead males specs ... the less you can compete in the "high grade" range as breeder or homebreeder. I've saw too many proud "serial outcrossers" being owned by a simple classic strains rightly maintained, to think different. But these polished lines have nothing to sell (no story) but improvements, and customers since the first seeds catalogs are trapped in a neverending cycle of trends.

The infernal spiral, i think, is that these cycles reached today a point of speed wich is over the intrinsequal specificities of the plant itself. Quality eat time. I mean, like you writed before, that the game is faster that the plant itself. And it's a bad situation at long term. Maybe you will be right in the next decade, and that the genpool of old school homebreeders will become vaults. I hope not, i'm more dreaming on the come back of the private genpools. The technology we have now don't necessary need to be used to grow faster and cheaper.

My project is based on the male keeper from a batch of
sensi star x nycd.

Nice donor btw ^^ And i'm enough confident to say that it is a genetic timebomb with a little experience on both strains. The F1 heterosis experience will blind you, take care. I think that you allready known that the sensi star print more in depth that in shape, with a high domination rate with each successive inbred. To push to early the flowering time with dragster males will harm the NYCD blood fast with no return possible.

The example is silly but, i compare this blood (sensi star) with the WW in term of progeny. Cross one time a JH with a WW, you will have a decent equilibrum in heterosis (F1). Push the line and the WW will totally eat the JH within 3 generations if you don't breed fully recessive (the 25% rule).

The SS is one of my biggest regret. When the reg was available and at a good quality standart, i ignored it because the hype around. What a big mistake. But i can't backup all old catalogs lol

I wish you the best for your projects, be patient and you will have a rich explosion of gens to select.

Is potency influenced by one of the parents in particularly?

It's more about a rate that specific donors give as a "bundle" if you want. I don't known the 79 cut he will use but the sensi star bundle will drive the potency all the way imho.

It's like crossing a cow wich produce a lot of milk with a cow wich is extremly resistant to cold weathers. In the case where they are genetically equals (it never happend without IBL behind or a luck of leprechaun lol), you allready known that the "milky" shape (fur color, traits like nose shape, muscles etc...) is to hunt if the new hybrid is not enough productive in term of milk and that you don't see any change in term of vigor/disease resistance (in this example, a decrease). I will not speak here about markers but that's the idea and it's a big part of MGO.

In this vein, i can barely predict that crossing a B52 male with a Sensi Star female will decrease the potency in adding vegetal mass to feed with extra potency, to stay at the same level of the original sensi star (but with an improved yield). Because you will judge your females in the spectrum of the male addition. You're forced to it because the heterosis.

If you switch the roles, you don't add additionnal vegetal mass to feed with quality trichomes. You just improve the potency of the B52. The females flowers being always our starting point of judgement.

I've tryed to be clear but it's hard with my level of english, it's a question of perspective in fact. This perspective will entirely drive your strategy among generations. The difficulty when you're fresh in this madness is to don't understand this perspective as a god law and to fall in absolute considerations. You have to be strong and without any pity about it or you will become crazy when segregation will occur, to don't find your previous markers in specimens that you don't planned to have.

Maybe in F3 you will need to BX an extremly strong sensi star pheno hybrid with the B52 P1 to get back in the range of your project. And it will push you more near to the specific hybrid that you wanted to create that directly select only mitigate specimens. These last ones are by definition the property of mother nature, it's extremly hard to handle them by theyr fake dominance (the shape tell you that it's stable, the offspring tell you that it's a mess with average qualities).

To end this hard part to digest, there is no stable rules of predominance but the intrinsequal qualities of the strains that you use and want to dilute in another specimen.

I increase the vegetal mass ? Ok, i will need high quality trichomes or more trichomes.
I increase the potency ? Ok, i decrease the vegetal mass to compact it or maybe i will high a little the maturity to let more time to the plant to reach this goal.

etc ... add to it the specificities of the donors (big bud yielder, sensi star hammer) and you have a good overview of the mastered chaos where you will swim.

Do filial generations stabilize traits like back crosses do?

Not the same way, but yes the results are similar in short periods.

BX methodologies must be used if you allready have what you search and that you just want to set the best equilibrum that you judge good. Between the donor and the host. I ignore the beauttifull tool that it is in an IBL project to don't mix too much the considerations lol

IBL is more for segregate a population in the same range of selection, the effects of your work are longer to come/touch but when the heterosis and the mendelian segregation are passed it's stronger. It is typically the "my plants look like clones but theyr are seeds". If you care enough in building enough parralel lines from the same P1, you can virtually push your selection potential over your own spanlife. You can't with BX, you reach fast a limit when the gens potential become too poor to be more pushed.

Advanced BX methodology exist (bateson jumps etc...) to counter this difficulty but it's very specific and mainly used to preserve something "naturally" not planned to survive a genetic blend. The SCBB cut is a perfect example of this type of case.

I think my p1's had been worked a bit before I got them because the offspring was fairly stable. I've been making crosses with my male in a sog @fuel. It works good like you say to make 100+ seeds so I can cull freely.

It's always nice for me to read a grower becoming a dictator in his crop. Nostalgia. I've learned all i known in killing a massive amount of plants, not in keeping them all. It's not a joke lol

SOG have the particularity to be handy with our conditions (illegal indoors mainly) with a great productivity when you juggle with your own seeds. With big plants the sacrifice is too high and it need professionnal/expensive structures. I use a lot the "seeds directly in 12/12" to test a batch of offspring before a selection.

Damn i writed a little bit too much, but nice talk. I always enjoy when i see people come back to homebreeding.
Be patient and methodic, respect your own choices and stay on it until your success ... and you will create weed that companies are not longer able to offer to you. I promise you that for good.
 

Easy7

Active member
Veteran
If 3 or 4 good studs were found, those could be ideal to backcross to. Males simply haven't been legends. Only way to prove them is to make seed and judge the progeny. Males have been neglected. Bodhi is the only seed maker that I have heard so much of a whisper about males. The only value a male has is pollinating for seed. There are signs of genetic traits: smell, density, yield, resistance, trichromes. Like a female, hidden traits are unknown unless progeny is examined. I could see more legendary males in the future, with larger legal grows.
 

Easy7

Active member
Veteran
The wave of the future for cannabis breeding, will be much like how hops are breed in Europe. They pop seeds and analysis the DNA for desirable and undesirable genetic markers. Not wasting time and money on growing them all out. Simply knowing what the plant will be like and making selections as early as possible.

Someday, I wouldn't be surprised if they could write DNA and 3d print seed. Not necessarily all that organic but we will be surprised.

Home breeding or old fashioned selection will be comparable to playing the lottery.
 

MJPassion

Observer
ICMag Donor
Veteran
@Fuel,
Thanks for the read. There's some pretty interesting ideas in there.

I'm curious about these back crossing strategies.
Can you give a couples examples please?
I think most cannabis breeders are using incorrectly. But, wtf do I know? :dunno:
Bx'ing using F1 progeny seems like a huge mistake & it seems that's where it typically happens with most breeding schemes today.

Easy7 said:
Someday, I wouldn't be surprised if they could write DNA and 3d print seed. Not necessarily all that organic but we will be surprised.

Pretty sure this can already be done.
Doesn't mean it just magically comes to life though. How would one give it the breath of life?
 

Easy7

Active member
Veteran
I don't know about breathing life into the creation. First maybe they would use another life and just gene splice to completion. Surely, there are mad scientist working on many ideas.
 

Fuel

Well-known member
Veteran
I don't known for the return of the males on the throne (lol), even with a close circle wich is used to flower males to theyr death ... the trade of males still rare and generally highly confidential. Myself, I will have hard times to trade a good male. Less with a good female. I mean psychologically. It have non sense and i can't really explain why its nuts lol

For the fully automation, i have a radical perspective on it. You can play with the DNA, i can imagine that with no stress for the next decade, but the starting point will stay the vital ressource. Like males to create feminized lines in certain manner lol

You can't say that homebreed an hybrid is a lottery, even if you're able to hit directly the gens. That's hard to explain but it's more like a cheated game of blackjack where you count the cards. You don't specially win each round, but you lose a lot less and you win a lot more on long term. To the point to beat the casino lol

Sadly i don't have special hopes about legals grows outcomes in term of evolution. But i assume that it's partial.

I roll a fat blunt before writing the answer to MJassion. Thanks for your feedback btw.
 

Dropped Cat

Six Gummi Bears and Some Scotch
Veteran
@Fuel,
Thanks for the read. There's some pretty interesting ideas in there.

I'm curious about these back crossing strategies.
Can you give a couples examples please?
I think most cannabis breeders are using incorrectly. But, wtf do I know? :dunno:
Bx'ing using F1 progeny seems like a huge mistake & it seems that's where it typically happens with most breeding schemes today.

Pretty sure this can already be done.
Doesn't mean it just magically comes to life though. How would one give it the breath of life?




My recent BC was to four F1 females and three selected
F2 females from the male P1.

The F1BC's will reinforce the P1 male make up while
the F2BC's will show more of the spread, so to speak.

I'll select from the F1BC for scent and potency and use
the best of the F2BC to secure the traits and vigor.

Moving forward I can select for dominate traits among
two diversions and several lines.

All done micro style, but that's okay, I got time, lol
 

Dropped Cat

Six Gummi Bears and Some Scotch
Veteran
Nice donor btw ^^ And i'm enough confident to say that it is a genetic timebomb with a little experience on both strains. The F1 heterosis experience will blind you, take care. I think that you allready known that the sensi star print more in depth that in shape, with a high domination rate with each successive inbred. To push to early the flowering time with dragster males will harm the NYCD blood fast with no return possible.

The example is silly but, i compare this blood (sensi star) with the WW in term of progeny. Cross one time a JH with a WW, you will have a decent equilibrum in heterosis (F1). Push the line and the WW will totally eat the JH within 3 generations if you don't breed fully recessive (the 25% rule).

The SS is one of my biggest regret. When the reg was available and at a good quality standart, i ignored it because the hype around. What a big mistake. But i can't backup all old catalogs lol

I wish you the best for your projects, be patient and you will have a rich explosion of gens to select.



I'm selecting for the sharp cherry and currently selecting
against the lemon and skunky skunk.

The F2BC will allow recessive to maintain while the
F1BC will show me just what the sensi star x nycd is capable of.

The wild card is the P1 female, an unknown vintage that
I culled to prevent navel gazing. No what if's, lol

Plenty of F1 seeds to sift through, just in case.
 

Fuel

Well-known member
Veteran
damn this blunt was a destroyer

The wild card is the P1 female, an unknown vintage that
I culled to prevent navel gazing. No what if's, lol

It had a hint of salt for the further selections yes ^^

Well MJPassion, i've allready readed and appreciated somes of your previous posts on other threads. So i known that it's useless to develop what is a backcross.

To understand well my manners you have to known that i don't pretend to be a genetician. But my hands, my nose and my eyes are used to eliminate what is not good to accomplish a goal. So my approach and my point of view are essentially practical. It's why i'm open bar with the practical use of mendelian rules (that i judge essential to known) and why i'm a little hermetic when the subjects tend to drift to allelic considerations. The human parts that i use to obtain some fun with weeds are unable to manipulate this dimension of the reality. So i assume totally my shape of "old school sheep keeper" lol

Now that this perspective is clear enough, it's more easy to speak about strategies and tactics.

The most popular and maybe the only one generaly known is the polemic cubbing. Opinions are divergent on this subject and i have my own position on it too but i consider it as a BX strategy anyway.

The goal with this strategy is to replicate a specimen by an intense and short pressure. I consider that this process stack the informations of the donor on the hybrid, and then reduce the perimeter of the further selections. On it i'm essentially mainstream.

I'm divergent on how this information stack on the pile, from the general opinion (like the gain of 25% in a cubbing). I see what i virtually manipulate, in a darwinian perspective, like a sequence of switch and lights. I mean that i truly visualize it when i align specimens lol. So i'm not considering that i replicate something, i consider that i bruteforce the use of a tiny panel of switchs. In practice, hunting a specimen domination and hunting switchs are physically twos differents process of analyze and supression. But it's because i never hybridize something in viewving the direct progeny as a finality, i always think in steps "humanly possible" to execute.

I've used a lot the BX in a fews different projects, i've never seen a result wich permit to insure that "to cube" something is to gain 25% more "generation/generated" of a specific phenotype, each round.

I love this tool, BX, but it stay brutal. It's more about russian mountain with delicate phenotypic equilibrums in general. Sometimes you have to wait twos generations without any results to see a brutal peak of expression. Sometimes you win instantly. The BX becoming the P1 of the goal reached. In both cases, i consider that this process don't offer a pleasant liberty and accuracy in term of manipulation of the offspring. It's just a canon that fire until the wall die after all.

It's for to do a loop on your statement on F1 MJPassion, now i consider the source of the BX in the equation to build a strategy.

The most common case, sometimes seen by error as the only one, is a cut to produce directly in seeds by an outcross. And that's the worse scenario for me. I don't known from where come this unique sheep that landed in my genpool, who is her sisters and brothers at least, and from wich generation ? It's when the core of the methods are divergents, i say that without any qualitative judgement. And impossible to select rightly the seedlings of the next generations by the way, without any experience or datas of 50% of the material.

I consider that it's when the choice of the outcross become a stragegy itself. I agree 100% with your opinion on F1 sources MJPassion. I consider that to add an heterosis layer on the brutallity of the BX is to increase the difficulty of the operation. I don't ignore the good results that i've seen with my own eyes with friend's projects but it stay messy (or blurry) versus a more strategic inbred line (old in generations or young) or at least one run to see what give the F2 and to use it. To have a small radar at least. But without heterosis for sure for a finest outcome. But it take a lot more time.

In synthesis, it's how i consider an outcross of a cut to backup it :

- the choice of the outcross, so the starting point. Many see the host like in grafting but i think that's a terrible error. It's a lot smoother to see this source as the real donor then consider only a "corrupted offspring" in the equation. On paper it don't change anything, but in front of plants you will execute twos different selections.

What i will use to outcross my reference cut is its own progeny, so with an allready diluted blood. I known it's WTF for the moment. Somes will basically think that i just don't count the first BX and that i start to record in BX2. But i always avoid heterosis in a BX operation, and in this specific case i will push the "planned outcross hybrid line" up to a satisfying segregation where i will hunt recessive. This type of selection can be highly destructive if you use a blood that you known very well, making it totaly different and highly productive (in term of space) that a regular selection for twos or three types of traits. It's faster that it appear, a very little number of plants see the 3200K colors lol

It add maybe a year (in ghetto conditions), but the outcome accuracy is really different and worth the efforts. You will be more in peace too with the segregations if ever you prolongate the BX in inbred lines.

Now, and i say that very seriously, with the catalogs to maintain and the actual trend in term of demand ... the time the pros will develop a deep BX, the reference cut will no longer be trendy lmao It's where i'm the advocate of the evil to moderate my considerations on this point. In fact i'm relativly in peace with the business in general, sometimes i argue about fem seedbanks but it's more about a dogma that a true critic. They were nuts if they don't answered to this massive demand lol

Well after that, a backcross still a backcross. I just explained here personnal options that open on differents strategies. I hope the english is not so bad and that helped to share somes funs on it.
 

Latest posts

Latest posts

Top