Table 2 Statistical descriptive parameters for morphological traits used to study P. microcarpa accessions

1

Tree growth habit

TGH

Code

1

9

2

Tree growth vigor

TGV

Code

1

5

3

Tree height

THe

Code

1

5

4

Branching

B

Code

1

5

5

Branch density

BD

Code

1

5

6

Branch flexibility

BF

Code

1

5

7

Trunk type

TrTy

Code

1

5

8

Trunk diameter

TrDi

Code

1

5

9

Trunk color

TrC

Code

1

7

10

Canopy density

CaDe

Code

1

5

11

Tendency to form suckers

TeSu

Code

1

5

12

Young shoot spine

YShSp

Code

0

1

13

Young shoot color

YShC

Code

1

5

14

Leaf density

LDe

Code

1

5

15

Leaf length

LLe

mm

7.42

23.08

16

Leaf width

LWi

mm

4.17

14.35

17

Petiole length

PLe

mm

2.09

8.69

18

Petiole width

PWi

mm

0.28

0.87

19

Leaf apex shape

LASha

Code

1

3

20

Leaf color

LC

Code

1

7

21

Leaf shape

LSha

Code

1

3

22

Leaf serration depth

LSeDep

Code

1

5

23

Ripening date

RiDa

Date

Mid-June

Early Aug

24

Fruit density

FrDe

Code

1

5

25

Fruit shape

FrSha

Code

1

5

26

Fruit length

FrLe

mm

7.29

12.62

27

Fruit width

FrWi

mm

5.48

9.06

28

Fruit stalk length

FrStLe

mm

3.38

14.92

29

Fruit stalk diameter

FrStDi

mm

0.32

1.05

30

Fruit weight

FrWe

g

0.21

0.44

31

Fruit color

FrC

Code

1

13

32

Fruit flesh color

FrFlC

Code

1

11

33

Fruit taste

FrTa

Code

1

11

34

Fruit flesh firmness

FrFlFi

Code

1

5

35

Fruit flesh thickness

FrFlTh

mm

1.07

2.35

36

Fruit juice color

FrJC

Code

1

9

37

Stone length

StoLe

mm

5.43

9.62

38

Stone width

StoWi

mm

4.12

6.32

39

Stone thickness

StoTh

mm

3.75

5.32

40

Stone weight

StoWe

g

0.05

0.18

41

Stone shape

StoSha

Code

1

7