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Table 3 Characterization of segregation distortion loci underlying the transmission of gametes through female, male and zygotic selections

From: Analysis of segregation distortion and its relationship to hybrid barriers in rice

Chra

Marker

Position

%DDb

%DD

%DD

%DD

%DD

%DD

%II

%II

%II

%II

Mechanismc

  

(Mbp)

(ID)

(DI)

(ID//D)

(D//ID)

(DI//D)

(D//DI)

(ID//I)

(I//ID)

(DI//I)

(I//DI)

 

1

S01022

4.38

0.36**(DD)

0.34**(DD)

 

0.78**(DD)

0.71**(DD)

     

Zygotic selection

1

S01038

7.46

0.34**(DD)

0.36**(DD)

 

0.75**(DD)

0.73**(DD)

     

Zygotic selection

1

S01157B

39.8

       

0.83**(II)

  

mSD

1

S01160

40.80

       

0.84**(II)

  

mSD

1

S01181B

43.20

       

0.84**(II)

  

mSD

2

S02126

29.91

     

0.68**(DD)

    

mSD

2

S02135

31.48

     

0.69**(DD)

    

mSD

3

S03027

5.71

0.38**(DD)

0.34**(DD)

   

0.77**(DD)

    

mSD

3

S03041

8.90

0.38**(DD)

0.41**(DD)

 

0.79**(DD)

 

0.87**(DD)

    

mSD

3

S03046

10.14

0.41**(DD)

0.41**(DD)

 

0.79**(DD)

 

0.91**(DD)

    

mSD

3

S03048

10.75

0.41**(DD)

0.40**(DD)

 

0.83**(DD)

 

0.89**(DD)

    

mSD

3

S03065

14.43

-

-

 

0.83**(DD)

 

0.94**(DD)

    

mSD

3

S03130

29.83

0.32**(DD)

         

Cytoplasm effect

3

S03136

30.11

0.33**(DD)

         

Cytoplasm effect

4

S04113

32.61

0.22**(H)

0.21**(H)

        

Nuclear effect

4

S04120

33.60

0.14**(H)

0.16**(H)

        

Nuclear effect

5

S05004B

0.29

0.41**(DD)

0.33**(H)

 

0.73**(DD)

 

0.78**(DD)

    

mSD

5

S05009

0.84

0.39**(DD)

0.26**(H)

 

0.73**(DD)

 

0.83**(DD)

    

mSD

5

S05029

3.42

0.34**(DD)

0.35**(DD)

 

0.75**(DD)

 

0.81**(DD)

    

mSD

5

S05030A

3.66

0.33**(DD)

0.33**(DD)

 

0.77**(DD)

 

0.80**(DD)

    

mSD

5

S05030B

3.66

0.33**(DD)

0.33**(DD)

 

0.77**(DD)

 

0.77**(DD)

    

mSD

5

S05032

4.29

 

0.34**(DD)

   

0.74**(DD)

 

0.84**(H)

  

mSD + Cytoplasm effect

5

S05036

4.71

 

0.35**(DD)

   

0.74**(DD)

 

0.80**(H)

  

mSD + Cytoplasm effect

5

S05045

6.97

-

-

   

0.73**(DD)

 

0.80**(H)

  

mSD

5

S05064

16.99

     

0.73**(DD)

 

0.84**(H)

  

mSD

5

S05077A

20.10

     

0.72**(DD)

 

0.80**(H)

  

mSD

6

S06018

4.74

0.36**(DD)

0.37**(DD)

  

0.68**(DD)

 

0.34**(H)

 

0.26**(H)

 

fSD

6

S06031

5.68

0.36**(DD)

0.36**(DD)

  

0.67**(DD)

 

0.30**(H)

 

0.25**(H)

 

fSD

6

S06040

7.83

      

0.26**(H)

 

0.19**(H)

 

fSD

6

S06053

8.83

      

0.22**(H)

 

0.22**(H)

 

fSD

6

S06065A

14.53

      

0.29**(H)

 

0.23**(H)

 

fSD

8

S08060

17.27

   

0.25**(H)

 

0.33**(H)

 

0.84**(II)

  

mSD

8

S08066

18.91

   

0.23**(H)

 

0.31**(H)

 

0.80**(II)

  

mSD

8

S080075

20.65

   

0.23**(H)

 

0.30**(H)

 

0.88**(II)

  

mSD

8

S08080B

21.33

   

0.23**(H)

 

0.27**(H)

 

0.84**(II)

  

mSD

8

S08090

23.08

   

0.19**(H)

 

0.28**(H)

 

0.84**(II)

  

mSD

9

S09065

17.91

0.19**(H)

         

Cytoplasm effect

9

S09075A

19.58

0.20**(H)

         

Cytoplasm effect

11

S11004A

1.08

       

0.88**(II)

  

mSD

11

S11006

1.27

       

0.88**(II)

  

mSD

12

S12005

0.33

0.90**(DD)

0.89**(DD)

        

Nuclear effect

12

S12009A

0.63

0.39**(DD)

0.43**(DD)

 

0.78**(DD)

 

0.71**(DD)

   

0.18**(H)

mSD

12

S12011B

1.88

0.40**(DD)

0.38**(DD)

 

0.75**(DD)

 

0.69**(DD)

   

0.16**(H)

mSD

12

S12030

3.84

0.36**(DD)

         

Cytoplasm effect

12

S12039B

5.57

0.31**(DD)

         

Cytoplasm effect

12

S12055B

15.57

0.35**(DD)

         

Cytoplasm effect

12

S12066

19.44

0.33**(DD)

   

0.23**(H)

     

fSD + Cytoplasm effect

12

S12071

19.66

-

-

  

0.24**(H)

     

fSD

12

S12091

23.65

-

-

  

0.24**(H)

     

fSD

12

S12097B

25.00

0.41**(DD)

   

0.25**(H)

     

fSD + Cytoplasm effect

  1. aindicates chromosomal regions showing segregation distortion (SD) at least in one population.
  2. bgenotypic ratios were tested against the expected Mendelian expectation to determine significant of SD (χ2 with 2 df for F2, 1 df for backcrosses: **indicating locus showed significant deviation from Mendelian segregation ratio (Bonferroni corrected). DD and II are abbreviation for genotype frequency (%) of Dasanbyeo and Ilpumbyeo, respectively. The direction of skewness is followed in bracket where DD for Dasanbyeo, II for Ilpumbyeo homozygous, and H for heterozygous genotypes. (-) indicating the primers were not tested in certain populations.
  3. cfactor causing segregation distortion, such as male function (mSD), female function (fSD), or zygotic selection. Male function (mSD) is defined if segregation ratios of those markers are significantly distorted from the expected mendelian segregation ratios in BC1F1 types conferring male-segregating population, but in its reciprocal cross was normally segregated according to mendelian pattern. Whereas, female function (fSD) causing SD is defined by the markers that only distorted in the type of BC1F1 conferring female-segregating population and normally segregated in its reciprocal cross. On the other hand, zygotic selection causing SD is explained by those markers which are distorted in BC1F1 types conferring both female-and male segregating populations.