Table 1 Vegetative and reproductive phenotypic traits studied in self-pollinated parental lines cultivated under greenhouse conditions.

From: Diploid aposporous sunflower forms triploid BIII progeny displaying increased apospory levels and non-random genetic mutations

Genotype

Ploidy level

PI-A median

Plant height (cm)

Leaf area (cm2)

Days to R1

Capitulum diameter (cm)

Seed number/capitulum

Apospory Penetrance

Apospory Expressivity

Rf975

2x

40,750 ± 1890

33.85 ± 1.14

8.05 ± 0.58

40.28 ± 0.28

3.61 ± 0.15

49.8 ± 8.6

10% (0.5–45.8%)

4.55% (0.2–24.9%)

Rf975

3x

61,771 ± 1927

33.63 ± 1.47

7.87 ± 0.32

41.87 ± 0.85

3.88 ± 0.29

20.4 ± 6.3

100% (46.3–100%)

61.9% (38.7–81%)

t-test Rf975-2x vs. Rf975-3x

2e-6*

0.90

0.36

0.04*

0.30

0.01*

  

HA89

2x

37,400 ± 2288

35.31 ± 0.85

7.11 ± 0.44

40.12 ± 0.29

3.19 ± 0.290

35.2 ± 12.4

0% (0-21.8%)

0% (0-12.6%, n = 34)

t-test

Rf975-2x vs. HA89

0.32

0.38

0.08

0.71

0.16

0.38

  
  1. *Asterisk indicate significant differences (ɑ < 0.05). Plant height (cm), leaf area (cm2), days to R1, capitulum diameter (cm), and seed number/capitulum were evaluated in a non-balanced assay involving the following number of plants (n): Rf975-2x n = 30; Rf975-3x n = 8; HA89-2x n = 30. Apospory penetrance was evaluated in a non-balanced assay involving the following number of plants (n): Rf975-2x n = 10; Rf975-3x n = 5; HA89-2x n = 10. Apospory expressivity was evaluated in a non-balanced assay involving the following number of ovaries (n): Rf975 2x n = 22; Rf975-3x n = 21; HA89-2x n = 34.
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