DNA extraction

How do I document genetic material in my accession database?

What the standards that are typically used? Are there good reference for this type of data storage? What status are typically monitoring (groudn, extracted, sequence)? 

Question Category: 

What is the best DNA extraction method for succulent tissue?

We are testing DNA extraction protocols for Dudleya brevifolia and are able to obtain a small amount of DNA in some trials, though the same conditions do not always work consistently across multiple samples.  Thus far we have tried combinations of various protocols (QIAGEN kits, a CTAB protocol), prewash steps, tissue amounts, tissue types (whole leaf tissue, epidermal tissue, parenchymal tissue).  Another plant tested alongside Dudleya extracted well, so there shouldn't be a problem with the reagents. We're going to try flower buds next.  Any additional suggestions are much apprec