β-amylase activities of selected accessions to identify new amino acid substitutions in Chinese landraces and wild barley.

*small letters indicated ranks of differences between β-amylase activity in one variety and that of remaining seven varieties. No significant difference (P>0.05) was defined if varieties fell into the same rank (by sharing the same letter). Significant difference (P≤0.05) was defined if varieties fell into different ranks. Varieties fell into a rank of two letters were the intermediate rank which were not significantly different to either of the single rank.