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Table 1 Mean phenotypic traits for 13 yield components across 251 testcross families as compared to IR 58025A, IC22015 (wild) and KRH2

From: Identification and mapping of yield and yield related QTLs from an Indian accession of Oryza rufipogon

Trait

IR 58025Aa

IC 22015b

KRH2c

Range in Testcross families

No. of families showing >20% increase over KRH2

Plant height (cm)

80

119

118

93 – 177

26

Number of tillers

9

32

11.2

7 – 16

18

Number of panicles

7

28

10

6 – 14

20

Panicle length (cm)

24

29

23.5

20.5 – 34.5

1

Spikelet number/panicle

175

150

167

67 – 265

88

Spikelet number/plant

1350

3500

1880

737 – 3074

74

Grain number/panicle

152*

35

117

30 – 185

101

Grain number/plant

1064*

700

1187

322 – 2310

63

Spikelet fertility (%)

0

15–20

68

42 – 91

42

1000 grain weight (g)

20

11.5

22.5

17.5 – 31.3

1

Yield / plant (g)

16*

9

19

7.5 – 36

39

Harvest index

32*

-

45

27 – 56

7

Yield (t/ha)

4.2

-

7

3.9 – 9.45

13

  1. cm: Centimeters, g: Grams, t/ha: Tonnes / hectare
  2. a – O. sativa parent, b – O. rufipogon parent, c- hybrid check
  3. * for the traits where IR 58025A has no corresponding value, the value from IR 58025B, an isogenic line of IR 58025A is used.