J
JessE
Guest
Sounds about right mate, nice postkylebroflovski : So feminized seeds are CRAP! They are crap for the consumer, they're crap for nature, crap for cannabis.
all is resume here
Sounds about right mate, nice postkylebroflovski : So feminized seeds are CRAP! They are crap for the consumer, they're crap for nature, crap for cannabis.
all is resume here
Rick
"imo
cannabis has no hemaphrodites only monoecious specimines in dioecious populations,,,"
>>>>>Wrong again Rick...wrong again. Monoecious hemp isn't ANYTHING like a late flower induced intersex drug cultivar. I told you to get off Ainsworth but you won't listen.
would you agree that some females cannot be induced to produce pollen?
N.
You say that, like there is a difference lol.What is written on pg 86 about the loss of vigor, health and fitness has more to do with bad breeding practices than with dealing fem seeds alone.
selfing is selfing and i think natreal hormones produced by the plant to make even 5 pollen sacks that i used to then pollinate a clone of her would be the same result from a plant turned by hormones sprayed or worse chemicals.
Reality is people even sell s1 seeds made this way to and somas just one most wont even say how they make theres.
Well I'm glad that you have come out to play Greeninthethumb, I was looking for someone to give labels to things, it's a start. So we have Type 4 "Monoecious Individual", would you care to have a crack at the other three mentioned and maybe flesh out the list a bit. For the sake of a good discussion, the list should include all categories of cannabis that are able to produce viable pollen and seed on the same plant, excluding males. Just as a matter of curiosity, would you agree that some females cannot be induced to produce pollen?
N.
IMO- a true XX can be induced to produce pollen and the progeny of this cross is perfectly acceptable. It's when "breeders" are using the naturally intersex plants as parents that we as cannabis consumers run into problems.
IMO- a true XX can be induced to produce pollen and the progeny of this cross is perfectly acceptable. It's when "breeders" are using the naturally intersex plants as parents that we as cannabis consumers run into problems.
Well I'm a little dissapointed Greeninthethumb. Where's the meat?
All you've done is substitute the word intersex for Hermie and then proceeded to tell us that you don't know how it works! If your saying that there are distinct differences between Hermaphroditic and Intersex plants and you give us some criteria to measure this by, say differences in how these two types are inherited then we are making progress, but all you have done is divide a category of plants that we call Hermies into groups, without explaining how this difference makes a difference. All you have done is come up with a shades of grey argument, but what ever way you cut it, grey is just different mixes of black and white.
Of course you take the position that there is no such thing as a female that won't produce pollen.
This is the cornerstone of your argument in the defence of fem seeds. I knew it would be.
My position is that you have true XX females that won't produce pollen and a large category of females that will produce pollen under a range of circumstances. This category carries, what we might call the intersex gene (but a rose by any other name, is still a rose) which is capable of various degrees of expression.
I won't be hypocritical and say that we should never use females that carry the intersex gene to any degree, because there wouldn't be much left. But what I do believe is that the use of true males suppresses the expression of this trait.
The general consensus is that selfing is not the way to go, and I agree, but there are circumstances. I tied very hard to self the NL5. I would have suffered loss of vigour and even Hermies if I could have amplified resin production, but she wouldn't and I say couldn't produce pollen.
N.
I've been saying that all the time... but the army is against me.
In holland there is a grow op on every block, so anyone who thinks they could get near 100% pollenation from there own pollen would need to be running one hell of a clean enviroment, clean cloths and everything incomming hepa filtered.. Mistakes are frequent in the fem seed bizz and breeders rush to produce fems. Each parent needs to be tested for its subseptability for "herming" under stressfull conditions that growers incounter.
Soon there will be a new seed out there and it will be one that produces sterile offspring. Then the true evil breeders will present themselves, with seed that will have both sterile Males and females so the breeder can protect there assets...
This is the beginning right here...below.. did anyone read it?
Sciencedaily Reports.....
A reliable method for producing plants that carry genetic material from only one of their parents has been discovered by plant biologists at UC Davis. The technique, to be published March 25 in the journal Nature, could dramatically speed up the breeding of crop plants for desirable traits.
The discovery came out of a chance observation in the lab that could easily have been written off as an error.
"We were doing completely 'blue skies' research, and we discovered something that is immediately useful," said Simon Chan, assistant professor of plant biology at UC Davis and co-author on the paper.
Like most organisms that reproduce through sex, plants have paired chromosomes, with each parent contributing one chromosome to each pair. Plants and animals with paired chromosomes are called diploid. Their eggs and sperm are haploid, containing only one chromosome from each pair.
Plant breeders want to produce plants that are homozygous -- that carry the same trait on both chromosomes. When such plants are bred, they will pass the trait, such as pest resistance, fruit flavor or drought tolerance, to all of their offspring. But to achieve this, plants usually have to be inbred for several generations to make a plant that will "breed true."
The idea of making a haploid plant with chromosomes from only one parent has been around for decades, Chan said. Haploid plants are immediately homozygous, because they contain only one version of every gene. This produces true-breeding lines instantly, cutting out generations of inbreeding.
Existing techniques to make haploid plants are complicated, require expensive tissue culture and finicky growing conditions for different varieties, and only work with some crop species or varieties. The new method discovered by Chan and postdoctoral scholar Ravi Maruthachalam should work in any plant and does not require tissue culture.
Ravi and Chan were studying a protein called CENH3 in the laboratory plant Arabidopsis thaliana. CENH3 belongs to a group of proteins called histones, which package DNA into chromosomes. Among the histones, CENH3 is found only in the centromere, the part of the chromosome that controls how it is passed to the next generation.
When cells divide, microscopic fibers spread from each end of the cell and attach at the centromeres, then pull the chromosomes apart into new cells. That makes CENH3 essential for life.
Ravi had prepared a modified version of CENH3 tagged with a fluorescent protein, and was trying to breed the genetically modified plants with regular Arabidopsis. According to theory, the cross should have produced offspring containing one mutant gene (from the mother) and one normal gene (from the father). Instead, he got only plants with the normal gene.
"At first we threw them away," Chan said. Then it happened again.
Ravi, who has a master's degree in plant breeding, looked at the plants again and realized that the offspring had only five chromosomes instead of 10, and all from the same parent.
The plants appear to have gone through a process called genome elimination, Chan said. When plants from two different but related species are bred, chromosomes from one of the parents are sometimes eliminated.
Genome elimination is already used to make haploid plants in a few species such as maize and barley. But the new method should be much more widely applicable, Ravi said, because unlike the process for maize and barley, its molecular basis is firmly understood.
"We should be able to create haploid-inducing lines in any crop plant," Ravi said. Once the haploid-inducing lines are created, the technique is easy to use and requires no tissue culture -- breeders could start with seeds. The method would also be useful for scientists trying to study genes in plants, by making it faster to breed genetically pure lines.
After eliminating half the chromosomes, Chan and Ravi had to stimulate the plants to double their remaining chromosomes so that they would have the correct diploid number. Plants with the haploid number of chromosomes are sterile.
The research also casts some interesting light on how species form in plants. CENH3 plays the same crucial role in cell division in all plants and animals. Usually, such important genes are highly conserved -- their DNA is very similar from yeast to whales. But instead, CENH3 is among the fastest-evolving sequences in the genome.
"It may be that centromere differences create barriers to breeding between species," Chan said. Ravi and Chan plan to test this idea by crossing closely-related species.
The work was supported by a grant from the Hellman Family Foundation.
Source:http://www.sciencedaily.com/releases...0324142012.htm
The new method discovered by Chan and postdoctoral scholar Ravi Maruthachalam should work in any plant and does not require tissue culture.
yet. plant tissue culture on a cell level is dangerous stuff
I don't fear properly made stress tested fem seeds, but I do fear that most will not be properly made.The same mutations are present in Fem seeds and dioecious populations. Not a reason to fear properly made, stress tested, gynoecious populations.
Does this worry you Greeninthethumb?If corporations like Monsanto, GW Pharma, Bayer and HortaPharm are allowed to carry out there interests, they will hold the genetic copyrights to all Cannabis strains on the planet. GW Pharma and HortaPharm have stated their intent to engineer Cannabis strains similar to Monsanto’s terminator seed technology. Their strains seem to be artificially manipulated to produce "one-off sterile females" which prevents reproduction of harvest-able seeds. These are the kinds of strains that are waiting to be controlled, regulated, licensed and taxed after the potential passage of proposition 19 in California and many similar initiatives across the United States being funded directly by Monsanto shareholders.