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Table 6 Pearson’s correlation analysis between the mean maximum or mean overall severity of scab on pecan trees in each of the 19 provenances and various environmental and tree characteristics

From: Foliage and fruit susceptibility of a pecan provenance collection to scab, caused by Venturia effusa

  Latitude Rainfall Mean temp Min. temp Elevation (m) Budbreak (day of year) Leaflet droop (°) Leaflet tilt (°)
MS Leaf 2018a − 0.167 − 0.629 0.477 0.216 0.000 − 0.352 − 0.643 − 0.515
0.5 0.004 0.04 0.4 1.0 0.1 0.003 0.02
MS Leaf 2019 − 0.245 − 0.689 0.503 0.309 0.062 − 0.410 − 0.732 − 0.608
0.3 0.001 0.03 0.2 0.8 0.08 0.0004 0.006
OS Leaf 2018 − 0.270 − 0.687 0.558 0.335 0.054 − 0.457 − 0.728 − 0.609
0.3 0.001 0.01 0.2 0.8 0.05 0.0004 0.006
OS Leaf 2019 − 0.344 − 0.734 0.507 0.396 0.181 − 0.465 − 0.794 − 0.672
0.1 0.0004 0.03 0.09 0.5 0.04 < 0.0001 0.002
MS Fruit 2018 − 0.347 − 0.584 0.418 0.327 0.256 − 0.353 − 0.582 − 0.441
0.1 0.009 0.07 0.2 0.3 0.1 0.009 0.06
MS Fruit 2019 − 0.445 − 0.703 0.563 0.464 0.262 − 0.485 − 0.790 − 0.625
0.06 0.0008 0.01 0.05 0.3 0.04 < 0.0001 0.004
OS Fruit 2018 − 0.187 − 0.527 0.373 0.190 0.087 − 0.274 − 0.499 − 0.393
0.4 0.02 0.1 0.4 0.7 0.3 0.03 0.10
OS Fruit 2019 − 0.326 − 0.659 0.549 0.369 0.124 − 0.437 − 0.762 − 0.612
0.2 0.002 0.01 0.1 0.6 0.06 0.0001 0.005
  1. Text in italic indicates significant associations. Matrix plots are presented in Additional file 1: Figure S6
  2. MS = Most severe based on severity estimate of the most scabbed leaf or fruit; OS = Overall severity based on an assessment of the overall disease on all leaves or fruit in the canopy
  3. aScab severity was visually estimated based on a modified ordinal scale (Chiang et al. 2014)