Table 6 Joint segregation of leaf background color (lemon or green) and leaf rugosity (rugose or flat) in progeny of four caladium crosses

From: A single gene controls leaf background color in caladium (Araceae) and is tightly linked to genes for leaf main vein color, spotting and rugosity

Cross [cross no.]

Caladium progeny (no.)

Expect. Ratio a

χ2 (P)

Recombination (%)

 

Rugose (RLF_) b

Non-rugose (rlfrlf)

   
 

Lemon (LEM_) b

Green (lemlem)

Lemon (LEM_) b

Green (lemlem)

   

‘Miss Muffet’ (LEM rlf//lem RLF)בGingerland’ (lem RLF//lem rlf) [2]

41

94

40

15

3:3:1:1

69.832 (P<0.001)

15.79c

‘Gingerland’ (lem RLF//lem rlf)בMiss Muffet’ (LEM rlf//lem RLF) [3]

69

106

43

17

3:3:1:1

73.681 (P<0.001)

14.47c

‘Miss Muffet’ (LEM rlf//lem RLF)בCandidum’ (lem rlf //lem rlf) [4]

29

272

270

37

1:1:1:1

372.882 (P<0.001)

10.86d

‘Candidum’ (lem rlf //lem rlf)בMiss Muffet’ (LEM rlf//lem RLF) [5]

62

295

262

40

1:1:1:1

318.924 (P<0.001)

15.48d

      

Average

14.15 (±2.26)

  1. a Segregation ratio expected for independent inheritance between leaf rugosity and leaf background color.
  2. b Two possible genotypes (RLFRLF or RLFrlf, generalized as RLF_ here) produce rugose progeny, and the recessive genotype (rlfrlf) produces the non-rugose progeny. Two possible genotypes (LEMLEM or LEMlem, generalized as LEM_ here) produce the lemon background color, and the recessive genotype (lemlem) produces green background color.
  3. c Recombination frequencies in these populations were calculated as follows: [(no. of non-rugose and green progeny/total no. of progeny)×2]×100.
  4. d Recombination frequencies in these pseudo BC1 populations were calculated as follows: [(no. of white-veined and green progeny+no. of green-veined and lemon progeny)/total no. of progeny]×100.
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