I currently have one Amorphophallus (a type of aroid) in my resident area and it start to has wilting sign (fairly common for Amorphophallus when it want to change leaf, enter dormant stage, or preparing to flower). I want to keep some part of the standing leaf of Amorphophallus for future use, mainly on DNA extraction.
If you have access to a RNAlater which is a nucleic acid stabilizing agent, you can put the spacemen in the solution and store in freezer. It gives you freedom to store any of the tissue part. Do not freeze samples in RNAlater Solution immediately; store at 4°C overnight (to allow the solution to thoroughly penetrate the tissue), remove supernatant, then move to –20°C or –80°C for long-term storage.
What i did before is to collect small pieces of each plant part (root/shoot/petiole/petal/pollen/etc, the younger the better), store in small tubes (5ml ones will do, one tube for each part, labelled the tubes: date & plant part), lastly store in nitrogen tank.
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