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. 2018 Apr 10;9:425. doi: 10.3389/fpls.2018.00425

FIGURE 1.

FIGURE 1

The principal component analysis (A) and the principal component regression (B) of 13 leaf parameter at different developmental stages of Zhongmai 175. 1: Chlorophyll; 2: RWC; 3: MDA content; 4: Soluble sugar content; 5: Proline content; 6: Glycine betaine content; 7: ABA content; 8: IAA content; 9: GA3 content; 10: ZR content; 11: POD activity; 12: Pn; 13: Stomatal conductance. CK and T indicate the control group (irrigation at jointing and anthesis stages) and drought treatment group (no-irrigation after sowing), respectively.