Table 4 Joint segregation of leaf spotting (present or absent) and leaf background color (lemon or green) in progeny of five caladium crosses

Cross [cross no.]	Caladium progeny (no.) ^a				Expect. ratio ^b	χ² (P)	Recombination (%)
	Spotted (S_)		Non-spotted (ss)
	Lemon (LEM_)	Green (lemlem)	Lemon (LEM_)	Green (lemlem)
‘Miss Muffet’ (S lem//s LEM)×‘Gingerland’ (S lem//s lem) [2]	70	130	54	12	3:3:1:1	47.618 (P<0.001)	9.02^c
‘Gingerland’ (S lem//s lem)×‘Miss Muffet’ (S lem//s LEM) [3]	103	172	62	10	3:3:1:1	65.903 (P<0.001)	5.76^c
‘Miss Muffet’ (S lem//s LEM)×‘Candidum’ (s lem//s lem) [4]	6	294	293	15	1:1:1:1	527.171 (P<0.001)	3.45^d
‘Candidum’ (s lem//s lem)×‘Miss Muffet’ (S lem//s LEM) [5]	17	323	307	12	1:1:1:1	548.958 (P<0.001)	4.40^d
‘Fla. Moonlight’ (s lem//s lem)×‘Miss Muffet’ (S lem//s LEM) [15]	2	38	50	1	1:1:1:1	82.582 (P<0.001)	3.30^d
‘Aaron’ (s lem//s lem)×‘Miss Muffet’2 (S lem//s LEM) [16]	4	83	96	8	1:1:1:1	153.286 (P<0.001)	6.28^d
						Average	5.37 (±2.15)

^a Two possible genotypes (LEMLEM or LEMlem, generalized as LEM_ here) produce the lemon background color, and only the recessive genotype (lemlem) produces the green background color. Two possible genotypes (SS or Ss, generalized as S_ here) produce the spotted progeny, and only the recessive genotype (ss) produces non-spotted progeny.
^b Segregation ratio expected for independent inheritance between leaf spotting and leaf background color.
^c Recombination frequencies in these populations were calculated as follows: [(no. of non-spotted and green progeny/total no. of progeny)×2]×100.
^d Recombination frequencies in these pseudo BC₁ populations were calculated as follows: [(no. of spotted and lemon progeny+no. of non-spotted and green progeny)/total no. of progeny]×100.

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