Legume Genomics and Genetics 2014, Vol.6, No.1, 1-11
8
Table 2 Analysis of variance for different yield parameters of parents and F
1
in blackgram
Source
Mean squares
df
Days to 50%
flowering
Days to maturity
Plant height
(cm)
Number of primary
branches/plant
Number of
clusters/plant
Number of
pods/plant
Number of
seeds/pod
Pod length
(cm)
100 seed weight
(gm)
Yield/plant
(gm)
Replication
2
0.4696
0.8125
1.0727
0.0243
0.0246
0.9510
0.0078
0.1043
0.0318
0.0964
Genotype
35
9.7757
**
8.2520
**
9.1224
**
0.0465
**
0.4576
**
4.1989
**
0.4721
*
0.2520
*
0.2002
*
0.6745
*
Error
70
0.6346
0.4486
1.5506
0.0085
0.0610
0.7541
0.1276
0.0664
0.0390
0.1693
Note: *Significant at P=0.05, **Significant at P=0.01 respectively
Table 3 Analysis of variance for combining ability of different yield parameters of blackgram in F
1
generation
Source
Mean Squares
df
Days to 50%
flowering
Days to
maturity
Plant height
(cm)
Number of primary
branches/plant
Number of
clusters/plant
Number of
pods/plant
Number of
seeds/pod
Pod length (cm)
100 seed weight
(gm)
Yield/plant
(gm)
GCA
7
1.1230
**
2.2043
**
2.4427
**
0.0324
**
0.1144
**
2.0654
**
0.2998
**
0.1519
**
0.0467
**
0.3230
**
SCA
28
3.7933
**
8.2520
**
3.1901
**
0.0113
**
0.1621
**
1.2330
**
0.1218
**
0.0671
**
0.0717
**
0.2003
**
Error
70
0.2115
0.4486
0.5169
0.0028
0.0203
0.2514
0.0425
0.0221
0.0130
0.0564
Note:*Significant at P=0.05, **Significant at P=0.01 respectively
Table 4 Estimates of variance components and degree of dominance for yield, yield contributing characters in F
1
generation
Days to 50%
flowering
Days to
maturity
Plant height
(cm)
Number of primary
branches/plant
Number of
clusters/plant
Number of
pods/plant
Number of
seeds/pod
Pod length (cm) 100 seed weight (gm) Yield/plant
(gm)
σ
2
GCA
0.0911
0.1756
0.1926
0.0030
0.0094
0.1814
0.0257
0.0130
0.0034
0.0267
σ
2
SCA
3.5817
7.8034
2.6732
0.0085
0.1417
0.9816
0.0792
0.0449
0.0587
0.1439
σ
2
GCA/ σ
2
SCA
0.0254
0.0225
0.0720
0.3486
0.0664
0.1848
0.3247
0.2888
0.0575
0.1853
σ
2
A
0.1822
0.3512
0.3852
0.0060
0.0188
0.3628
0.0514
0.026
0.0068
0.0534
σ
2
D
3.5817
7.8034
2.6732
0.0085
0.1417
0.9816
0.0792
0.0449
0.0587
0.1439
h
2 bs
94.6797
94.7856
85.5424
83.8150
89.1171
84.2461
75.4477
76.2365
83.4394
77.7690
h
2 ns
4.5831
4.0822
10.7739
34.6820
10.4386
22.7346
29.6938
27.9569
8.6624
21.0484
Note: σ
2
A=Additive variance, σ
2
D= Dominance variance. Where, σ
2
GCA = Vg = variance due to GCA; σ
2
SCA = Vs = variance due to SCA; Ve = environmental variance p = number of parents. These
variances were translated into different components of phenotypic variance as: Additive genetic variance VA = 2 Vg , Total genetic variance VG = 2 Vg + Vs , Phenotypic variance Vp = 2 Vg + Vs + Ve ,
Heritability in broad sense (h
2
b) and narrow sense (h
2
n) were estimated as: h
2
b = (VG / Vp) × 100, h
2
n = (VA / Vp) × 100
