Is it Genetics or a symptom of something going wrong ?

[Owl Mirror]

Hello everyone, I've come upon a symptom that I'm not quite sure what to make of. I've been sprouting seeds and sifting through them, looking for a few good plants to grow out. I have started to notice a great many of the seedlings are developing deformed leaves.
If it's going to happen, it usually begins with the first true leaves.

My first thought is that it's a result of the genetics I'm cross-breeding.
My second thought is that it is a symptom of some aspect of the grow room not being correct. The weather has changed here and I'm wondering if the roots are too cold in their cups and it is that causing the deformation.

Maybe it's something completely different?
If you have any suggestions, please post them.

 

[Kindman69]

Could be the weather, could also be a ph problem.
Good luck

 

[Owl Mirror]

Hi kindman69, don't think it's PH as that has been a constant all along.
My thoughts are that the air near the floor has gotten colder and that might be effecting the roots, which in turn is having this effect on the leaf development.

I just purged all the seedlings so, I'm not able to post up a pic

 

[mongreloctopus]

I have been seeing a lot of cold-related problems lately...new growth is small and spindly, yellow in color and the overall growth of the plant is slowed. If your medium is getting below 70 F it could be the case. Got any pics?

 

[EvilTwin]

Owl Mirror,
They were that bad that you culled them?

Seedlings and really young plants can respond to nutrients too early (or too hot soil) with deformed leaves. What I've seen mostly is a twisting of the leaves. So if that's what you were seing...start them in a milder mix next time. Don't feed till they show you need (slight yellowing). Then start weak and ease up.
ET

 

[Owl Mirror]

Owl Mirror,
They were that bad that you culled them?
ET

I'm only allowed 12 living plants at any moment so, I sprout enough that I can cull most and only keep 2-3 to grow out fully.
I think I may need a heat mat to place between the floor and the pots.
My soil mix isn't nutrient rich nor is my water so I'm pretty sure it isn't an over-fertilization problem.

 

[freeride high]

are your seeds fully dried and mature?
just wondering because ive gotten runts out of immature seeds

 

[Owl Mirror]

are your seeds fully dried and mature?
just wondering because ive gotten runts out of immature seeds

Actually, NO they are quite fresh.
I wasn't aware that seeds needed a drying out period over and above the time they dried in the buds during curing.

How long a time should pass between harvest and planting ?
These plants are not really runts or slow growing, in fact they are vigorous growers.
The problem is that the first true leaves are misshapen and deformed.
I haven't changed anything except the location of my nursery closet.

Perhaps I should wait for a time before trying to germinate the seeds I'm producing ?

 

[VerdantGreen]

a couple of weeks left at room temp and low humidity should be enough to dry seeds.

some seedlings will grow out of the problem pretty quickly too.

V.

 

[Owl Mirror]

Thanks VG,then my seeds should be good as far as that is concerned.

I haven't tested my tap water in awhile.
I wonder if the quality has changed due to the weather/season ?
I have probably thrown away some good plants recently but,
I didn't want to waste the time on them if they wouldn't grow right.