Nuclear DNA content (pg/2C median; 25% and 75% value) of Malus species (Number of accessions used for measurements) with the results of the nonparametric Kruskal-Wallis Test together with Dunn's Multiple Range Test; medians with the same letter was not significantly different at 5% level. Each ploidy level was analysed separately. Classification was based on Rehder
[5] and Langenfelds [14].
Species
Section
Series
Nuclear DNA content (pg/nucleus)
Results of the Kruskal-Wallis test
No.
Median*
25%
75%
Ploidy level 2x = 34
1.484
M. tschonoskii
Docyniopsis
1
1.245
1.150
1.283
a
M. yunnanensis
Sorbomalus
Yunnanenses
2
1.337
1.320
1.350
a
M. ombrophila
Sorbomalus
Yunnanenses
1
1.341
1.329
1.351
a
b
M. kansuensis
Sorbomalus
Kansuenses
6
1.365
1.350
1.384
a
b
M. honanensis
Sorbomalus
Yunnanenses
1
1.378
1.276
1.413
a
b
M. prattii
Sorbomalus
Yunnanenses
1
1.397
1.386
1.406
a
b
M. baccata
Eumalus
Baccatae
16
1.440
1.430
1.467
b
M. ×zumi 2x
Eumalus
Baccatae
10
1.461
1.439
1.512
b
c
M. ×dawsoniana
Sorbomalus
Kansuenses
1
1.464
1.455
1.478
b
c
M. fusca
Sorbomalus
Kansuenses
5
1.464
1.460
1.470
b
c
M. hupehensis 2x
Eumalus
Baccatae
2
1.466
1.451
1.475
b
c
M. ×hartwigii
Eumalus
Baccatae
1
1.471
1.450
1.475
b
c
M. ×adstringensis 2x
Eumalus
Baccatae
5
1.475
1.454
1.493
b
c
M. ×moerlandsii
Eumalus
Pumilae
4
1.476
1.457
1.493
b
c
M. ×purpurea
Eumalus
Pumilae
7
1.484
1.467
1.493
c
d
M. sylvestris
Eumalus
Pumilae
11
1.484
1.460
1.509
c
d
M. ×robusta
Eumalus
Baccatae
5
1.490
1.458
1.519
c
d
M. ×atrosanguinea
Eumalus
Baccatae
1
1.493
1.449
1.493
b
c
d
M. ×sublobata
Eumalus
Pumilae
4
1.497
1.459
1.550
c
d
M. ×arnoldiana
Eumalus
Baccatae
3
1.499
1.470
1.529
c
d
M. ×asiatica
Eumalus
Pumilae
4
1.500
1.470
1.514
c
d
M. prunifolia
Eumalus
Pumilae
10
1.500
1.475
1.519
c
d
M. sieversii
Eumalus
Pumilae
6
1.501
1.482
1.513
c
d
M. orientalis
Eumalus
Pumilae
7
1.502
1.458
1.519
c
d
M. spectabilis 2x
Eumalus
Pumilae
7
1.502
1.484
1.523
c
d
e
M. ×scheideckeri
Sorbomalus
Sieboldianae
3
1.507
1.479
1.530
c
d
e
M. floribunda
Sorbomalus
Sieboldianae
6
1.509
1.490
1.529
c
d
e
M. ×domestica 2x
Eumalus
Pumilae
8
1.514
1.487
1.530
c
d
e
M. ×micromalus
Eumalus
Baccatae
2
1.528
1.497
1.534
c
d
e
M. sieboldii 2x
Sorbomalus
Sieboldianae
5
1.530
1.505
1.533
d
e
M. transitoria
Sorbomalus
Kansuenses
5
1.535
1.514
1.551
d
e
M. ×soulardii
Chloromeles
4
1.564
1.512
1.588
d
e
f
M. ioensis 2x
Chloromeles
4
1.565
1.523
1.667
e
f
M. trilobata
Eriolobus
3
1.638
1.621
1.667
f
M. florentina
Sorbomalus
Florentinae
3
1.653
1.635
1.660
f
Ploidy level 3x = 51
2.198
M. hupehensis 3x
Eumalus
Baccatae
18
2.121
2.014
2.174
a
M. sikkimensis 3x
Eumalus
Baccatae
7
2.165
2.148
2.180
a
b
M. ×zumi 3x
Eumalus
Baccatae
1
2.194
2.143
2.229
a
b
c
M. sieboldii 3x
Sorbomalus
Sieboldianae
3
2.193
2.183
2.201
b
c
M. ×adstring 3x
Eumalus
Baccatae
3
2.201
2.191
2.211
b
c
M. toringoides 3x
Sorbomalus
Kansuenses
7
2.202
2.172
2.254
b
c
M. spectabilis 3x
Eumalus
Pumilae
1
2.206
2.195
2.216
b
c
M. halliana
Eumalus
Baccatae
3
2.209
2.174
2.217
b
c
M. komarovii 3x
Sorbomalus
Kansuenses
5
2.232
2.210
2.261
c
d
M. ×domestica 3x
Eumalus
Pumilae
6
2.270
2.252
2.296
c
d
M. sargenti 3x
Sobomalus
Sieboldianae
2
2.285
2.197
2.307
d
M. ioensis 3x
Chloromeles
2
2.414
2.396
2.426
d
M. coronaria 3x
Chloromeles
3
2.428
2.183
2.462
d
Ploidy level 4x = 68
3.007
M. sikkimensis 4x
Eumalus
Baccatae
2
2.851
2.815
2.894
a
M. sieboldii 4x
Sorbomalus
Sieboldianae
5
2.879
2.832
2.938
a
M. komarovii 4x
Sorbomalus
Kansuenses
2
2.917
2.847
3.013
a
b
M. sargenti 4x
Sorbomalus
Sieboldianae
4
2.918
2.891
2.958
a
b
M. toringoides 4x
Sorbomalus
Kansuenses
1
2.958
2.947
2.979
a
b
c
M. lancifolia
Chloromeles
1
3.007
2.969
3.035
c
d
M. glaucescens
Chloromeles
1
3.102
3.082
3.197
d
e
M. angustifolia
Chloromeles
1
3.116
3.101
3.122
c
d
e
M. ×platycarpa
Chloromeles
4
3.151
3.118
3.177
d
e
M. coronaria 4x
Chloromeles
6
3.186
3.115
3.221
e
M. ×heterophylla
Chloromeles
1
3.193
3.167
3.216
e
Ploidy level 5x-6x
M. sikkimensis 5x
Eumalus
Baccatae
1
3.540
M. sargenti 5x
Sorbomalus
Sieboldianae
1
3.874
M. sargenti 5x-6x
Sorbomalus
Sieboldianae
1
4.286
*Estimation based on propidium iodide staining by using the internal standard radish (1.1 pg/2C).
