Spore longevity and viability question! - Mushroom Cultivation

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fakeaddress9103
sceptic

Registered: 05/18/04
Posts: 8
Last seen: 19 years, 1 month

Spore longevity and viability question!

#2696591 - 05/18/04 02:32 PM (19 years, 10 months ago)

Hi, I have two questions:

1. How long will an unrefrigerated spore syringe stay viable? I searched the site and found that a refrigerated one should last "about 6 months or longer" -- but what about one sitting at room temperature??

2. What temperature will make spores useless/ "kill" them?

Thank you!!

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shirley knott
not my real name

Registered: 11/11/02
Posts: 9,105
Loc: London

Last seen: 7 years, 3 months

Re: Spore longevity and viability question!

[Re: fakeaddress9103]
#2697251 - 05/18/04 03:54 PM (19 years, 10 months ago)

conditions that'd kill them? i dunno. maybe freezing them for ages, or frying them in a pan - haven't seen any data on that. i've seen plenty of reports, though, of room temp syringes germinating after a year or two. probably depends on spore viability, what your 'room temp' is, humidity etc etc.

you need an expert. Anno? Joshua? Workman? Teonan? MJ?

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buh

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ATWAR
Connoisseur

Registered: 01/26/03
Posts: 1,640
Loc: #108768 in line...

Re: Spore longevity and viability question!

[Re: fakeaddress9103]
#2697458 - 05/18/04 04:17 PM (19 years, 10 months ago)

#1 - Viability will decline with age. While a syringe that is a month old will produce explosive growth, one that is 6 months old will produce sporadic growth. Longevity of the syringe is difficult to predict. The biggest problem with storing a syringe at room temperature is that bacteria in the syringe (if present) will multiply much faster at the warmer temperature.

#2 - I have heard 106F, but I imagine thermal death temperatures are variable for species...

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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation

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