Nuclear DNA Content (pg/2C median; 25% and 75% value) of Malus species (N° 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 are not significantly different at 5% level. Each ploidy level was analysed separately. Classification was based on the works of Rehder [5] and Langenfelds [14].
Species
Section
Series
Nuclear DNA content (pg/nucleus)*
Results of the Kruskal-Wallis Test
N°
Median
25%
75%
Ploidy level
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
Euromalus
Baccatae
16
1.440
1,430
1,467
b
M. zumi 2x
Euromalus
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
Euromalus
Baccatae
2
1.466
1,451
1,475
b
c
M. hartwigii
Euromalus
Baccatae
1
1.471
1,450
1,475
b
c
M. adstringensis 2x
Euromalus
Baccatae
5
1.475
1,454
1,493
b
c
M. moerlandsii
Euromalus
Pumilae
4
1.476
1,457
1,493
b
c
M. purpurea
Euromalus
Pumilae
7
1.484
1,467
1,493
c
d
M. sylvestris
Euromalus
Pumilae
11
1.484
1,460
1,509
c
d
M. ×robusta
Euromalus
Baccatae
5
1.490
1,458
1,519
c
d
M. ×atrosanguinea
Euromalus
Baccatae
1
1.493
1,449
1,493
b
c
d
M. ×sublobata
Euromalus
Pumilae
4
1.497
1,459
1,550
c
d
M. ×arnoldiana
Euromalus
Baccatae
3
1.499
1,470
1,529
c
d
M. ×asiatica
Euromalus
Pumilae
4
1.500
1,470
1,514
c
d
M. prunifolia
Euromalus
Pumilae
10
1.500
1,475
1,519
c
d
M. sieversii
Euromalus
Pumilae
6
1.501
1,482
1,513
c
d
M. orientalis
Euromalus
Pumilae
7
1.502
1,458
1,519
c
d
M. spectabilis 2x
Euromalus
Pumilae
7
1.502
1,484
1,523
c
d
e
M. ×scheideckeri
Sorbomalus
Sieboldiane
3
1.507
1,479
1,530
c
d
e
M. floribunda
Sorbomalus
Sieboldiane
6
1.509
1,490
1,529
c
d
e
M. ×domestica 2x
Euromalus
Pumilae
8
1.514
1,487
1,530
c
d
e
M. ×micromalus
Euromalus
Baccatae
2
1.528
1,497
1,534
c
d
e
M. sieboldii 2x
Sorbomalus
Sieboldiane
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
2.198
M. hupehensis 3x
Euromalus
Baccatae
18
2.121
2,014
2,174
a
M. sikkimensis 3x
Euromalus
Baccatae
7
2.165
2,148
2,180
a
b
M. ×zumi 3x
Euromalus
Baccatae
1
2.194
2,143
2,229
a
b
c
M. sieboldii 3x
Sorbomalus
Sieboldiane
3
2.193
2,183
2,201
b
c
M. ×adstring 3x
Euromalus
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
Euromalus
Pumilae
1
2.206
2,195
2,216
b
c
M. halliana
Euromalus
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
Euromalus
Pumilae
6
2.270
2,252
2,296
c
d
M. sargentii 3x
Sobomalus
Sieboldiane
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
3.007
M. sikkimensis 4x
Euromalus
Baccatae
2
2.851
2,815
2,894
a
M. sieboldii 4x
Sorbomalus
Sieboldiane
5
2.879
2,832
2,938
a
M. komarovii 4x
Sorbomalus
Kansuenses
2
2.917
2,847
3,013
a
b
M. sargentii 4x
Sorbomalus
Sieboldiane
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
Euromalus
Baccatae
1
3.540
M. sargentii 5x
Sorbomalus
Sieboldiane
1
3.874
M. sargentii 5x-6x
Sorbomalus
Sieboldiane
1
4.286
* Estimation based on propidium iodide staining by using the internal standard radish (1.1 pg/2C).
