(2) In intergenic regions of psaC gene, an additional insertion of the six bases (CAAAAA) was only found in Hordeum vulgare.

• 在已经研究的植物中，该‘CAAAAA’多核苷酸插入是栽培大麦所特有的，表明该片段是在大麦物种分化以后插入的。