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. 2017 Mar 30;8:436. doi: 10.3389/fpls.2017.00436

Figure 4.

Figure 4

Principal Component Analysis (PCA) of the RIL population for RSA-related traits (in black) and P efficiency related traits. RSA traits were evaluated in three culture systems of paper roll test (A), hydroponics (B), and vermiculite (C) culture. P efficiency related traits (PUE, red; PupE, blue; PutE, green) were evaluated in the field under the conditions of normal-phosphorus (NP, in rectangle) and low-phosphorus (LP, in triangle). PUE, phosphorus use efficiency; PupE, phosphorus uptake efficiency; PutE, phosphorus utilization efficiency.