Table 3 Goodness-of-fit tests for alkyl cannabinoid chemotypic segregation ratios.

From: Complex Patterns of Cannabinoid Alkyl Side-Chain Inheritance in Cannabis

F2 population

FC3 categorisation (low – high)

Model

Goodness-of-fit

Genotype

n

I

II

III

IV

V

No. loci

Gene

effect

Expected ratio

χ2

df

Critical valuea

H0 accepted

All

210

92

33

33

21

31

2

Additive

1:4:6:4:1

551.07

4

9.49

No

B CBDAS B CBDAS

44

26

6

7

5

—

2

Dominant

9:3:3:1

2.71

3

7.82

Yes

B THCAS B CBDAS

116

44

42

9

21

—

2

Dominant

9:3:3:1

59.33

3

7.82

No

B THCAS B THCAS

50

21

22

7

—

—

2

Dominant,

partially dominant

7:6:3

1.20

2

5.99

Yes

  1. aUpper-tail critical values of the chi-square (χ2) distribution at P = 0.05; C3 alkyl cannabinoid fraction (FC3); locus B genotypes: homozygote THCAS (BTHCASBTHCAS), homozygote CBDAS (BCBDASBCBDAS), heterozygote THCAS CBDAS (BTHCASBCBDAS).
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