Table 2 Correlation of leaf length (LL), leaf width (LW), and aphid hazard grade (AG) with diversity indices and predominant bacteria (relative abundance > 1%) based on Spearman correlation test

Shannon

0.350^**

0.097

0.333

Shannon

0.232

0.074

-0.381

Inv_Simpson

0.336^**

0.033

0.333

Inv_Simpson

0.195

0.063

-0.310

Observed_richness

0.236

0.130

0.286

Observed_richness

0.199

-0.024

-0.286

Pielou_evenness

0.356^**

0.094

0.476

Pielou_evenness

0.226

0.099

-0.357

Chao1

0.461^**

0.152

0.286

Chao1

0.186

-0.028

-0.286

Pantoea

0.071

-0.148

0.452

Pantoea

0.029

-0.025

0.167

Exiguobacterium

-0.160

0.024

-0.881**

Exiguobacterium

-0.222

0.003

-0.476

Massilia

0.259^*

0.091

0.429

Curtobacterium

0.078

0.041

-0.238

Frigoribacterium

0.435^**

0.265^*

0.548

Frigoribacterium

0.193

0.225

0.119

Curtobacterium

0.285^*

0.342^**

-0.286

Erwinia

0.107

0.045

0.095

Erwinia

0.041

-0.131

0.571

Mycetocola

0.205

0.217

-0.048

Pseudomonas

0.321^**

0.110

0.214

Serratia

0.197

-0.145

0.381

Sphingomonas

0.217

0.133

0.524

Sanguibacter

0.055

0.117

-0.048

Mycetocola

0.340^**

0.279^*

-0.357

Allorhizobium

0.132

0.123

0.238

Hymenobacter

0.262^*

0.188

0.000

Arthrobacter

0.166

0.027

-0.357