| a Data (mean levels) and N from the same collection as in Table 6. Pooled stems (N 1 1) showed a similar profile as other plant parts (Acc 1: mean 9.4 μmol/g dry = + wt. Acc 2 mean 14 μmol/g dry wt.). Searched for but not detected: 1mEt, 1mPr, 2mPr, 2mBu, 2h2mBu, 3mPe, 2h3mPe, 3hmPe, Pren, 4mSb, 8mSO 2 o. GSL numbers labelled with an asterisk indicate tentative identification due to lack of an authentic standard (no auth. std. of 72 was available when this sample was run in 2012), while individual data with an asterisk indicate lack of MS2 confirmation of analyte identity due to low level. |