Citrullus lanatus (Thunb.) Matsum. & Nakai - Cucurbit Breeding ...

Table 2. Continued.
Pedigree σ 2 (P) y σ 2 (E) x σ 2 (G) w σ 2 (A) v H 2 B u h 2 n t
Kinston
'Carolina Cross #183' × 'Petite Sweet' 15.27 10.80 4.46 12.47 0.29 0.82
'Carolina Cross #183' × 'Minilee' 14.24 8.99 5.26 -7.93 0.37 -- r
'Carolina Cross #183' × 'NH Midget' 10.62 6.15 4.48 4.72 0.42 0.44
'Cobbs Gem' × 'Petite Sweet' 13.68 6.79 6.88 7.45 0.50 0.55
'Cobbs Gem' × 'Minilee' 9.13 5.95 3.18 -2.87 0.35 -- r
'Cobbs Gem' × 'NH Midget' 7.15 5.02 2.13 3.64 0.30 0.51
'Weeks NC Giant' × 'Petite Sweet' 14.63 12.15 2.47 5.21 0.17 0.36
'Weeks NC Giant' × 'Minilee' 9.17 12.81 -3.64 -6.34 -- r -- r
'Weeks NC Giant' × 'NH Midget' 6.49 4.78 1.72 -12.48 0.26 -- r
Mean s 11.40 7.58 3.82 4.19 0.33 0.54
Overall mean 14.93 8.52 6.41 6.78 0.41 0.59
z Data are single-fruit weights (kg) from nine families of giant- by mini-fruited cultivars of Citrullus lanatus
var. lanatus. Single plants were transplanted as follows: P aS 1, (20), P bS 1 (20), F 1 (40), BC 1P a, (60) BC 1P b
(60), and F 2 (210)
y σ 2 (P) = phenotypic variance = ! 2
x σ 2 (E) = environmental variance =
w σ 2 (G) = genetic variance = ! 2
( )
F 2
! 2
( ) + ! 2 ( ) + 2 " ! 2 ( )
P a
( P)
" ! 2 ( E)
v σ 2 (A) = additive variance = 2 ! " 2 [ ( F ) 2 ] # " 2
u H 2 B = broad-sense heritability
P b
4
[ F1 ]
( BC P ) + " 1 a
2
[ ( BC P ) 1 a ]
93