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Table 3 Analysis of species-specific gene families in Cucurbitaceae and Rosaceae

From: Extreme expansion of NBS-encoding genes in Rosaceae

Species

Number of family

Number of genes

Average gene member

Members of largest family

Average nucleotide divergence

Ave_ Ka/Ks

PAML (* + **|All)

Cucumber

13

14

1.1

2

0.223

0.519

-

Melon

21

26

1.2

2

0.071

0.772

-

Watermelon

14

14

1

1

-

-

-

Apple

215

287

1.3

12

0.087

0.836

11|13

Peach

63

63

1

1

-

-

-

Pear

72

88

1.2

4

0.099

0.617

3|4

Mei

93

95

1

2

0.119

0.453

-

Strawberry

200

292

1.5

22

0.207

0.667

16|16

Cannabis

137

232

1.7

11

0.148

0.501

12|18

  1. *P < 0.01; **P <0.05.