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Table 1 Mantel test on the relationship between the root traits and NSC variables

From: Drought- and soil substrate-induced variations in root nonstructural carbohydrates result from fine root morphological and anatomical traits of Juglans mandshurica seedlings

Root traits

1st-order

2nd-order

3rd-order

4th-order

5th-order

R 2

P

R 2

P

R 2

P

R 2

P

R 2

P

SRL

0.193

0.033

0.346

0.002

0.193

0.027

0.099

0.168

0.103

0.174

AD

0.085

0.239

0.156

0.063

0.128

0.105

0.097

0.163

0.015

0.764

RTD

0.235

0.018

0.380

0.002

0.095

0.200

0.252

0.007

0.146

0.064

Biomass

0.034

0.539

0.012

0.796

0.041

0.497

0.282

0.005

0.002

0.957

CT

0.342

< 0.001

0.392

0.001

0.255

0.008

——

——

——

——

SD

0.104

0.172

0.182

0.038

0.285

0.006

0.177

0.043

0.131

0.094

NCPS

0.186

0.031

0.267

0.006

0.383

0.002

0.372

< 0.001

0.174

0.033

MECD

0.010

0.836

0.136

0.090

0.209

0.014

0.083

0.252

0.107

0.127

TCAC

0.010

0.826

0.229

0.023

0.261

0.007

0.006

0.924

0.044

0.476

  1. SRL specific root length, AD average diameter, RTD root tissue density, CT cortical thickness, SD stele diameter, NCPS number of conduits per stele, MECD mean conduit diameter, TCAC total cross-sectional area. Significant correlation coefficients (P < 0.05) are shown in bold