• 0 Posts
  • 97 Comments
Joined 2 years ago
cake
Cake day: July 2nd, 2023

help-circle



  • The_v@lemmy.worldtoGardening@lemmy.worldSeed trading?
    link
    fedilink
    English
    arrow-up
    1
    ·
    5 days ago

    Please do NOT attempt to disinfect your own seeds. It sounds like a good idea but in practice it’s not.

    It takes some very precise equipment to effectively utilize this method. If you don’t do it correctly you can kill the seeds or select for resistance to the disinfectant in the pathogen. Neither is a good option.

    It also doesn’t work that well unless you do all the things not in the paper perfectly. Stuff like, harvest the seed at the correct maturity, treat the seed within a limited number of days. Disinfect at the right moisture level etc… it all gets extremely complicated and very species specific.

    Oh and you also have to be sure to know the pathogen you are disinfecting. For example bleach and hot water does little against TMV in tomatoes and peppers. Now a TSP (tri-sodium phosphate) bath immediately after harvest is highly effective.


  • The_v@lemmy.worldtoGardening@lemmy.worldSeed trading?
    link
    fedilink
    English
    arrow-up
    4
    arrow-down
    3
    ·
    6 days ago

    I strongly discourage seed trading from unknown and untested sources.

    There are tons of diseases and pests that can be shared with he seed. Many of them once established can wreck havoc on local agriculture and the environment.

    This isn’t some esoteric “Maybe” it will happen. It happens every year, constantly, all around the world.

    But hey, go ahead and fuck up the planet because you want to have a hobby.





  • The_v@lemmy.worldtoScience Memes@mander.xyzimagine
    link
    fedilink
    English
    arrow-up
    6
    arrow-down
    3
    ·
    16 days ago

    Stop your bullshit.

    Not only are they fertile, it is standard protocol to purchase competitors hybrid F1 seed and produce F2 seed in most species (except corn). Eventually plant breeders create inbreds (self-pollinating for 6+ generation’s). These inbreds are the used to make new F1 hybrids. In Europe this is referred to as “plant breeders rights”.

    In corn they have to get a little bit more creative. Corn breeders have to keep distinct genetically distant breeding pools to maintain heterosis in their the resulting hybrids. They pull traits from a competitors hybrid utilizing backcross breeding into their breeding pools.



  • The_v@lemmy.worldtoScience Memes@mander.xyzimagine
    link
    fedilink
    English
    arrow-up
    56
    arrow-down
    5
    ·
    16 days ago

    Where the fuck do people come up with this shit?

    No the “vast majority” of crops are not infertile. They are hybrids. Farmers buy the seeds because of a genetic phenomenon called heterosis AKA hybrid vigor. It takes expertise and a shit ton of money to make hybrid seed. If growers could get the same performance from saving their own seeds only an absolute dumbfuck would buy seeds from a seed company.

    Now there are a few species that hybrids can only be made by taking advantage of mutants that have male sterility genes. The resulting hybrids are still fertile (produce viable female gametes) but need an outside source of pollen. Examples: onions, sunflowers and carrots.

    The only “sterile” seed sold is seedless watermelon aka triploid seed. Seedless watermelons are only sold because the market demands it thanks to a push by the USDA after being created in Japan pre-WW2. The margins on seedless watermelon seed are often 40-50% less than hybrid diploid seed. And don’t get me started on the research cost - 14-15 generations for a new female line versus 7-8 for seeded types.


  • The_v@lemmy.worldtoScience Memes@mander.xyzimagine
    link
    fedilink
    English
    arrow-up
    15
    ·
    17 days ago

    Not even close.

    Seedless watermelons are a triploid. These are hybrid between a tetraploid female and a diplod male. The plant has three copies of every chromosome and is unable to produce fertile gametes aka completely sterile.

    Fruit formation is triggered by fertile diploid pollen (planted in the field In a 4:1 ratio). The fruit then continues to grow without embryo formation in the fruit seeds (pips).


  • The_v@lemmy.worldtoScience Memes@mander.xyzimagine
    link
    fedilink
    English
    arrow-up
    23
    ·
    17 days ago

    Saving seed for the farms own use is expressly allowed under plant variety protection and patent laws in the U.S.

    This is why the seed companies created contracts that they require all growers to sign before being allowed to purchase GMO crops. The prohibition from saving seed is from the signed agreement not from the patent or PVP.

    Say if you got grain from the farmer for your bird feeder. Then if you happen to use the grain as seed to plant some for next year’s bird feeder — completely legal. You are not bound by the agreement between the farmer/seed company. Unless you try to sell the grain/seed to another person. Then you are in violation of the seed companies patent in the U.S.

    Remember that corn shows a severe amount of inbreeding depression. So the F2 plant will not produce as much as the farmers F1 did the year before.



  • It is likely bacterial growth. The inoculum most likely is coming in the water source. Although bacterial growth is inhibited by water treatment, there is always some there. It could also just be floating around in the air on dust particles. These bacteria a tough and ubiquitous in nature.

    What likely happened - you had several competing species growing in the solution. Most were likely unicellular while this one likes to form a colony. It’s likely in the same group that forms the dreaded white films on the top on aquariums. When you sterilized eveything, you eliminated the competition and this species was able to grow larger and faster.

    So what to do - I personally would run it though a blender to break up the floaters before using it and otherwise ignore it. It doesn’t harm anything so why fight it?




  • Layoffs are common very large companies because of how they operate.

    Although they start as innovative companies once they hit a certain size threshold internal inertia prevents any significant innovation.

    In order to maintain growth they must buy smaller innovative companies and capitalize on the innovation using their vaster resources.

    After they have sucked every last bit of money the purchased innovation, they layoff employees they purchase with the innovative company and all those they added in its ramp up.

    They then go on the hunt to purchase the next smaller innovative company.

    Mega corporations are a parasite on the economy.