<mxfile host="app.diagrams.net"><diagram name="roadmap"><mxGraphModel>
  <root>
    <mxCell id="0" />
    <mxCell id="1" parent="0" />
    <mxCell id="node1" value="研究问题：分离鉴定小球藻crtO基因" vertex="1" parent="1" style="rounded=1;whiteSpace=wrap;html=1;verticalAlign=middle;align=center;">
      <mxGeometry x="40" y="40" width="250" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node2" value="策略：RT-PCR和RACE克隆基因" vertex="1" parent="1" style="rounded=1;whiteSpace=wrap;html=1;verticalAlign=middle;align=center;">
      <mxGeometry x="60" y="162" width="210" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node3" value="关键改造：CRTO双功能酶鉴定" vertex="1" parent="1" style="rounded=1;whiteSpace=wrap;html=1;verticalAlign=middle;align=center;">
      <mxGeometry x="60" y="284" width="210" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node4" value="结果：基因特征及功能分析" vertex="1" parent="1" style="rounded=1;whiteSpace=wrap;html=1;verticalAlign=middle;align=center;">
      <mxGeometry x="60" y="406" width="210" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node5" value="结论：玉米黄质途径合成虾青素" vertex="1" parent="1" style="rounded=1;whiteSpace=wrap;html=1;verticalAlign=middle;align=center;">
      <mxGeometry x="54" y="528" width="222" height="64" as="geometry" />
    </mxCell>
    <mxCell style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" id="edge1" edge="1" source="node1" target="node2" parent="1">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" id="edge2" edge="1" source="node2" target="node3" parent="1">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" id="edge3" edge="1" source="node3" target="node4" parent="1">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" id="edge4" edge="1" source="node4" target="node5" parent="1">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
  </root>
</mxGraphModel></diagram></mxfile>