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

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

	Latitude	Rainfall	Mean temp	Min. temp	Elevation (m)	Budbreak (day of year)	Leaflet droop (°)	Leaflet tilt (°)
MS Leaf 2018^a	− 0.167	− 0.629	0.477	0.216	0.000	− 0.352	− 0.643	− 0.515
MS Leaf 2018^a	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
MS Leaf 2019	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
OS Leaf 2018	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
OS Leaf 2019	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
MS Fruit 2018	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
MS Fruit 2019	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
OS Fruit 2018	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
OS Fruit 2019	0.2	0.002	0.01	0.1	0.6	0.06	0.0001	0.005

Text in italic indicates significant associations. Matrix plots are presented in Additional file 1: Figure S6
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
^aScab severity was visually estimated based on a modified ordinal scale (Chiang et al. 2014)

ISSN: 2662-4044