cotyledon wont sprout for 3 days, need help

N

notyourneighbor

Member
Hey guys!

So I germinated my green gelato auto seed in paper towel as I always do and in 3 days it was ready, the radicle had a good size and the seed shell was slightly opened.

The problem came when i put it on the pot, in 5 days only the seed shell show up a little bit from the dirt, but is was more opened (pic 1), so I gently removed the shell. (pic 2)

Now more 3 days passed (pic 3) and the cotyledons wont sprout yet, but they look healthy because they are green so i assume they're getting nutrients but they are stuck for some reason :/

Do you guys think i should just wait or try to open them gently?
 

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twentyeight.threefive

twentyeight.threefive

Well-Known Member
It looks like it's starting to open on it's own. Sometimes the clear membrane from the seed shell sticks the cotyledons but can't tell from the photos.
 
MickFoster

MickFoster

Well-Known Member
There might be a little membrane still attached.
The cotyledons open quickly when exposed to light unless something is preventing it.
 
xtsho

xtsho

Well-Known Member
Oxygen is a necessary component of respiration, which is the process that converts stored sugars into the energy needed to keep all living organisms alive.

In the case of plants, oxygen is a necessary component in many processes including respiration and nutrient movement from the soil into the roots. Unlike animals, plants do not have an active transport system for oxygen. Oxygen moves slowly and passively within a plant through diffusion. When oxygen is not present at the root-soil interface, soil-absorbed nutrients and oxygen become a limiting factor.

In the absence of oxygen, root growth stops and over time roots begin to die. When flooded for a prolonged period of time root dieback can be significant. Similar to drought stress conditions, the stomata start to close and photosynthesis is reduced. Respiration continues as photosynthesis slows and the plant is operating at a deficit. A prolonged period at a deficit leads to reduced yields, root and limb dieback, greater susceptibility to disease and pests, and eventually death.

hortau.com

What are anaerobic conditions and how do they affect your crop? - Hortau Irrigation Management & Soil Tension Monitoring

Editor’s Note: This is the first in a series of posts on anaerobic conditions. Stay tuned for more posts on this topic on The Hortau Blog. By Brian Henriott Hortau Grower Support Specialist Farmers, as well as nature, can create hypoxic soils. In extremely wet years, there is very little growers...
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Doug Dawson

Doug Dawson

Well-Known Member
Going by the last pic there is no membrane stuck on it. The last thing you want to do is try to "open them gently." It does look like they are too wet, let the medium dry some and give her time. xtsho gave some great info.
 
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N

notyourneighbor

Member
thank you all for the replys guys, they are under a metal halid 400w lamp (big distance), thats why i spray a bit everyday because in the next day the soil is dry, but i will stop water for now and just wait, as long as they stay green i have hope xD
 
N

notyourneighbor

Member
MickFoster said:
There might be a little membrane still attached.
The cotyledons open quickly when exposed to light unless something is preventing it.
Click to expand...
yep, the 3 times i grew a seed all sprout in one day..

this time maybe because i forced the shell it caused some stress but so early I fear she can die =(
 
Xcoregamerskillz

Xcoregamerskillz

Well-Known Member
notyourneighbor said:
Me too but she is kinda on the seedling stage yet but with this light i think it's ok give 24H
Click to expand...
The plant is going to use the light you give it. It doesn't matter what stage. If you're not bleaching your plant, then give it more light. Just remember that more light means more evaporation and transpiration
 
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