Table 4 Description and coding of the assessed Malus floral phenotypic traits
From: Phenotypic variation of floral organs in flowering crabapples and its taxonomic significance
No. | Phenotypic trait | Trait description (grade) and coding |
|---|---|---|
1 | Flower density | Dense (0); Medium (1); Sparse (2) |
2 | Inflorescence type | Corymbiform (0); Umbellate (1) |
3 | Buds adhered per inflorescence | No (0); Yes (1) |
4 | Flower type | Single (0); Semi-double (1); Double (2) |
5 | Flower shape | Flat (0); Shallow cup (1); Deep cup (2) |
6 | Flower diameter | Assessed in mm |
7 | Petal color at the balloon stage | Yellow green (0); White (1); Pinkish White (2); Light pink (3); Deep pink (4); Rose (5); Light red-purple (6); Deep red-purple (7); Deep red (8); Dark red-purple (9) |
8 | Petal outside color | White (0); Pinkish white (1); Light pink (2); Deep pink (3); Rose (4); Light red-purple (5); Deep red-purple (6); Dark red-purple (7) |
9 | Petal margin inside color | White (0); Pinkish white (1); Light pink (2); Light red-purple (3); Deep red-purple (4); Dark red-purple (5) |
10 | Petal center inside color | White (0); Pinkish white (1); Light pink (2); Light red-purple (3); Deep red-purple (4); Dark red-purple (5) |
11 | Petal base inside color | White (0); Pinkish white (1); Light pink (2); Light red-purple (3); Deep red-purple (4); Dark red-purple (5) |
12 | Petal relative position | Separated (0); Touching (1); Overlapping (2) |
13 | Petal number per flower | Counted |
14 | Petal shape | Circular (0); Oval (1); Ovate (2); Obovate (3); Elliptic (4); Narrow elliptic (5) |
15 | Petal surface wrinkle | No (0); Yes (1) |
16 | Petal with prominent veins | No (0); Yes (1) |
17 | Petal margin with incisions | No (0); Yes (1) |
18 | Petal length | Assessed in mm |
19 | Petal width | Assessed in mm |
20 | Petal length / Petal width | Calculated |
21 | Claw length | Assessed in mm |
22 | Sepal color | Green (0); Reddish green (1); Red-purple (2) |
23 | Sepal apex shape | Acuminate (0); Acute (1) |
24 | Sepal deflexed | No (0); Yes (1) |
25 | Sepal pubescence | Dense (0); Sparse (1); None (2) |
26 | Sepal length | Assessed in mm |
27 | Sepal width | Assessed in mm |
28 | Sepal length / Sepal width | Calculated |
29 | Receptacle color | Green (0); Reddish green (1); Red-purple (2) |
30 | Receptacle pubescence | Dense (0); Sparse (1); None (2) |
31 | Relative length of sepals and receptacle | Longer (0); Same length (1); Shorter (2) |
32 | Peduncle habit | Upright (0); Drooping (1); Weeping (2) |
33 | Peduncle color | Green (0); Reddish green (1); Red-purple (2) |
34 | Peduncle pubescence | Dense (0); Sparse (1); None (2) |
35 | Peduncle length | Assessed in mm |
36 | Peduncle thickness | Assessed in mm |
37 | Pistil number per flower | Counted |
38 | Style color | Light green (0); Yellow green (1); Light red-purple (2); Deep red-purple (3) |
39 | Style base with pubescence | No (0); Yes (1) |
40 | Stamen number per flower | Counted |
41 | Anther with red-purple membrane | No (0); Yes (1) |
42 | Anther color | White (0); Light yellow (1); Yellow (2); Orange (3) |
43 | Filament color | White (0); Light red-purple (1); Deep red-purple (2) |
44 | Relative position of stigmas and anthers | Below (0); Same level (1); Above (2) |