Table 2 The 33 studied varieties and their typical characteristics

SV01

NC82

I

elliptical leaf shape

SV02

XHJ 1025

L

fewer leaves, susceptible to tobacco black shank disease

SV03

G28

I

low ratio of leaf length-to-width, susceptible to CMV

SV04

Zhongyan 90

B

wrinkled leaf surface, buckling leaf margins

SV05

Zhongyan 15

B

concentrated inflorescence

SV06

Coker 176

I

larger auricles, moderate tips of corolla

SV07

NC89

I

flat foliage, green leaf color

SV08

K326

I

fewer axillary buds, wavy leaf margin, light red flower color,

SV09

Zhongyan 100

B

wavy leaf margins, short flowers

SV10

HHDJY

B

flat foliage, little corolla, red flowers

SV11

Ge 3

B

resistance to tobacco black shank disease, moderate resistance to TMV

SV12

JYH

B

resistance to tobacco brown spot disease

SV13

Zhongyan 103

B

buckling leaf margins

SV14

G140

I

susceptible to tobacco brown spot disease and TMV

SV15

T.I.245

I

resistance to CMV

SV16

Coker139

I

fewer axillary buds, turbinate inflorescences

SV17

K149

I

narrow leaf width, light green leaf color

SV18

JX 6007

B

moderate resistance to tobacco black shank disease

SV19

CBH

L

longer leaves, large ratio of leaf length-to-width, obtuse leaf tips, susceptible to tobacco bacterial wilt

SV20

Ge 5

B

very tall plants with many leaves

SV21

NC-22-NF

I

very tall plants with many leaves, short leaf length, late flowering.

SV22

Wanye

I

petiolate, wide ovoid leaf shape

SV23

DB 101

I

resistance to tobacco bacterial wilt

SV24

NC-agz

I

dwarf plants

SV25

NC27NF

I

tall plants with many leaves, late flowering

SV26

Coker 254

I

light green main stem color

SV27

NC86

I

dark green main stem and leaf color

SV28

MN373

I

small auricles, early flowering.

SV29

B. L. Orinoco

I

long ovoid leaf shape

SV30

XHJ 5209

L

ovoid leaf shape

SV31

Coker371Gold

I

concentrated inflorescences, wavy leaf margins, wrinkled leaf surface

SV32

TGBHKY

I

white flower color

SV33

Guiyan 11

B

spherical inflorescences