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. 2019 Jun 11;10:751. doi: 10.3389/fpls.2019.00751

Table 1.

Effects of root interaction (RI, i.e., self vs. non-self interaction), harvest batch (HB, i.e., first vs. second week) and their interaction term (RI×HB) on the measured parameters of tobacco plants.

Leaf (shoot) parameters RI
 HB
 RI×HB
 Root parameters RI
 BH
 RI×HB
F     P F     P F     P      F     P F     P F     P
Dry mass   0.04    0.851   268.61 < 0.001  12.15    0.005 Dry mass†   10.42    0.007 131.76 < 0.001   2.54    0.137
Sugar   6.37    0.027     45.03 < 0.001  10.37    0.007 Sugar‡   26.10    0.001   19.87    0.002   9.92    0.013
Starch†   0.03    0.856 1315.35 < 0.001    6.90    0.022 Starch†   17.01    0.001 252.14 < 0.001   0.43    0.523
Protein   0.01    0.906       9.63    0.009    0.37    0.556 Protein     2.57    0.135      0.59    0.458   0.90    0.361
PAL   0.01    0.917     56.35 < 0.001    1.07    0.322 PAL     5.95    0.031   59.45 < 0.001 21.20 < 0.001
PPO†   8.03    0.015     18.93 < 0.001    0.35    0.564 PPO   17.32    0.001     3.55    0.084   0.37    0.553
Phenolics‡   8.20    0.013       1.39    0.261    0.05    0.822 Phenolics†   28.66 < 0.001   53.22 < 0.001 78.62 < 0.001
Lignin† 15.71    0.002       0.75    0.405 < 0.01    0.974 Lignin   28.99 < 0.001     2.55    0.136 < 0.001    0.998
IAA   1.11    0.313     31.27 < 0.001    0.15    0.703 IAA     2.56    0.136     3.21    0.098   1.52    0.241
GA   1.11    0.313     31.27 < 0.001    0.15    0.703 GA     2.56    0.136     3.21    0.098   1.52    0.241
CK‡   0.80    0.418       0.14    0.728    0.07    0.807 CK   12.37    0.004   10.92    0.006   3.78    0.076
ABA‡   8.56    0.028       5.58    0.061    6.13    0.053 ABA     0.85    0.374     0.35    0.567   0.90    0.361
JA‡   0.61    0.455     67.86    0.001    0.67    0.432 JA   25.89 < 0.001   48.31 < 0.001 10.46    0.008
SA‡   0.23    0.646     53.27    0.001    0.27    0.622 SA   25.89 < 0.001   48.31 < 0.001 10.46    0.008
Nitrogen   0.24    0.642 Nitrogen   3.18    0.125
Potassium   5.79    0.053 Potassium   46.73 < 0.001
Iron   0.04    0.854 Iron‡     0.07    0.801
Zinc   0.89    0.381 Zinc     1.45    0.274
NPR 13.05    0.004       0.01    0.912    0.38    0.551 RRR‡ 128.34    0.001 551.84    0.001 97.78    0.001
SC 52.94 < 0.001     15.63    0.002 < 0.01    0.976
TR 72.90 < 0.001       2.67    0.128    1.70    0.217

PAL, phenylalanine ammonia-lyase; PPO, polyphenol oxidase; JA, jasmonic acid; SA, salicylic acid; CK, cytokinins; ABA, abscisic acid; IAA, 3-indoleacetic-acid; GA, gibberellic acid; NPR, net photosynthetic rate; SC: stomatal conductance; TR, transpiration rate; RRR, root respiration rate. †indicates the variable was log-transformed before the parametric tests (i.e., ANOVAs); ‡indicates the parameter was analyzed using nonparametric tests (i.e., ANOVA with robust estimation).