Table 1

Distribution of seed phenotype and the underlying genotype at the two fluorescence markers in F₂ diploid and autotetraploid populations and estimates of the model parameters

Diploids/Allotetraploid

Autotetraploids

Phenotype

Genotype^a

Frequency (f_i(r))

Obs (n_i)

Obs (n_i)

Genotype^b

Frequency^c

Obs (n_i)

Yellow

G_R_

3(1-r)²/4+r(1-r)+r²/2

2,805

1,484

G⁽ⁱ⁾B^(4-i)R^(j)C^{(4- j)}

f₁(α,r)

12,707

Green

G_CC

r(2-r)/4

322

275

G⁽ⁱ⁾B^(4-i)C⁽⁴⁾

f₂(α,r)

1,868

Red

BBR_

r(2-r)/4

333

298

B⁽⁴⁾R⁽ⁱ⁾C^{(4- i)}

f₃(α,r)

2,216

Grey

BBCC

(1-r)²/4

791

320

B⁽⁴⁾C⁽⁴⁾

f⁴(α,r)

3,098

Estimates

Log-likelihood

Log-likelihood

Log-likelihood

Present study

0.1643 ± 0.0062

-4,177.79

0.2770 ± 0.0110

-2,553.43

0.0676 ± 0.0121

0.3048 ± 0.0051

-20815.3

Pecinka et al.

0.154 ± 0.009

-4,179.20

0.241 ± 0.018

-2,559.21

-

0.205 ± 0.011

-21010.0

^aStands for any other alleles; ^bG⁽ⁱ⁾B^(4-i)R^(j)C^{(4- i)} is a tetraploid genotype containing i 'G' alleles, 4-i 'B' alleles, j 'R' alleles and 4 - j 'C' alleles; ^cforms of f_i(α,r) (i = 1, 2, 3, 4) are presented in context. s.d.: standard deviation.

Wang and Luo BMC Biology 2012 10:30   doi:10.1186/1741-7007-10-30