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Table 1 Pollen fertility of autotetraploid hybrids with genetic interactions at Sa, Sb and Sc loci

From: Pervasive interactions of Sa and Sb loci cause high pollen sterility and abrupt changes in gene expression during meiosis that could be overcome by double neutral genes in autotetraploid rice

Material name

Loci interaction

Genotype at Sa, Sb and Sc pollen sterility loci

Pollen fertility (% ± SE)

E1-4×

 

S a j S a j S a j S a j/S b j S b j S b j S b j/S c j S c j S c j S c j

62.78 ± 0.18

E1-4× × E5-4×

Sa

S a i S a i S a j S a j/S b j S b j S b j S b j/S c j S c j S c j S c j

40.97 ± 0.18

E1-4× × E2-4×

Sb

S a j S a j S a j S a j/S b i S b i S b j S b j S c j S c j S c j S c j

29.63 ± 0.14

E1-4× × E4-4×

Sc

S a j S a j S a j S a j/S b j S b j S b j S b j/S c i S c i S c j S c j

41.03 ± 1.19

E1-4× × E25-4×

SaSb

S a i S a i S a j S a j/S b i S b i S b j S b j/S c j S c j S c j S c j

23.17 ± 6.50

E1-4× × E245-4×

SaSbSc

S a i S a i S a j S a j/S b i S b i S b j S b j/S c i S c i S c j S c j

12.17 ± 1.03

T449-4×

 

S a n S a n S a n S a n /S b n S b n S b n S b n/S c i S c i S c i S c i

74.62 ± 5.55

T449-4× × E1-4×

Sc

S a n S a n S a j S a j /S b n S b n S b j S b j/S c i S c i S c j S c j

74.98 ± 3.62**

T449-4× × E24-4×

Sc

S a n S a n S a j S a j/S b n S b n S b j S b j/S c i S c i S c j S c j

76.74 ± 3.24**

T449-4× × E245-4×

 

S a n S a n S a j S a j/S b n S b n S b j S b j/S c i S c i S c i S c i

84.08 ± 3.35**

  1. E1-4× represents Taichung65-4×, a near isogenic line and parent of hybrids harboring loci interaction.T449-4× indicates autotetraploid rice harboring double neutral genes at Sa and Sb pollen sterility loci. T449-4× × E1-4× and T449-4× × E24-4× have no-interaction at Sa and Sb pollen sterility loci, but interaction present at Sc pollen sterility locus
  2. “**”indicates significant difference (P < 0.01) compared to E1-4× × E25-4× (CK)
  3. i, j and n represent indica, japonica and neutral alleles, respectively