Table 10 Tetrasomic inheritance of the Drh mutant homostyle

From: Inheritance of spontaneous mutant homostyles in Turnera subulata × krapovickasii and in autotetraploid T. scabra (Turneraceae)

Cross

 

Phenotype frequencies

G

P

  

Short

Homo

Long

  

(a) Tested against expected ratio of 5 homostyle: 1 long

DR4-1L × Drh

(ssss × SHSHss)

0

135

29

0.12

0.73

DR4-2L × Drh

(ssss × SHSHss)

0

58

18

2.45

0.12

DR4-3L × Drh

(ssss × SHSHss)

1a

39

8

0.00

1.00

Pooled

 

0

232

55

1.18

0.28

Heterogeneity

 

—

—

—

1.39

0.50

(b) Tested against expected ratios of 6 short: 5 homostyle: 1 long

Drh × DR4-1S

(SHSHss × Ssss)

46

29

4

2.68

0.26

Drh × DR4-2S

(SHSHss × Ssss)

35

30

14

7.09

0.03

Pooled

 

81

59

18

2.38

0.30

Heterogeneity

 

—

—

—

7.40

0.03

(c) Tested against expected ratio of 35 homostyle : 1 long

Drh selfed

(SHSHss × SHSHss)

0

52

1

0.18

0.67

(d) Backcross tested against expected ratio of 1 homostyle: 1 long

DR4-1L × Drh-95H

(ssss × SHsss)

0

12

13

0.04

0.84

DR4-3L × Drh-9H

(ssss × SHsss)

0

37

35

0.05

0.82

Pooled

 

0

49

48

0.01

0.92

Heterogeneity

 

—

—

—

0.09

0.76

  1. Comparison of observed and expected morph ratios under the assumption of tetrasomic inheritance for crosses involving a homostylous mutant, Drh, of autotetraploid T. scabra. Putative parental genotypes are indicated in parentheses. Goodness of fit and heterogeneity tests are provided.
  2. aThis plant is short-styled, pollen sterile and its flowers are often malformed. It was treated as a homostyle for the purposes of goodness of fit tests.
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