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. 2017 Aug 29;13:70. doi: 10.1186/s13007-017-0221-3

Table 4.

Pearson correlation coefficients among B tolerance metrics measured in a pot experiment (Pot exp.) and two hydroponic experiments (Hydro. exp. 1 & 2) and B tolerance rankings from DEDJTR data and breeders’ advice, as described in the methods

Hydro. exp. 1 Hydro. exp. 2 Pot exp.
Imm. PGS Mat. Imm. PGS Mat. Score Shoot BM Root BM
Hydro. exp. 1
 Imm. PGS
 Mat. 0.98***
Hydro. exp. 2
 Imm. PGS 0.81* 0.82*
 Mat. 0.89** 0.90** 0.94***
Pot exp.
 Score 0.93*** 0.94*** 0.70* 0.66+
 Shoot BM 0.50 0.54 0.25 0.20 0.76*
 Root BM 0.44 0.41 0.47 0.40 0.62+ 0.74*
DEDJTR data 0.87* 0.84* 0.68+ 0.65 0.50 0.21 0.51

Pot exp. metrics include leaf symptom scores (Score) and shoot and root biomass (BM) reduction relative to a control treatment. Hydroponic metrics were leaf symptom scores on plants grown from immature precociously germinated seed (Imm. PGS) or mature (Mat.) seed. DEDJTR data were converted to numerical categories as described in the methods. Symbols after correlation coefficients indicate significance levels (+ P ≤ 0.1; * P ≤ 0.05; ** P ≤ 0.01; *** P ≤ 0.001)