The Journal of Research ANGRAU
Contents of 41(1) 2013 - acharya ng ranga agricultural university
Contents of 41(1) 2013 - acharya ng ranga agricultural university
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GENE ACTION AND COMBINING ABILITY STUDIES IN CHICKPEA<br />
S.<br />
No.<br />
Character<br />
gca<br />
(df=6)<br />
sca<br />
(df=21)<br />
error<br />
(df=54)<br />
² gca<br />
² sca<br />
² gca<br />
/ ²<br />
sca<br />
1 Days to 50% flowering 40.42 ** 12.15 ** 2.43 4.22 9.72 0.43 0.41<br />
2 Days to maturity 9.49 ** 2.00 ** 0.62 0.99 1.38 0.71 0.50<br />
3 Plant height (cm) 70.00 ** 6.30 ** 1.13 7.65 5.17 1.48 0.71<br />
h 2<br />
4<br />
5<br />
Number <strong>of</strong> branches<br />
per plant<br />
Number <strong>of</strong> pods per<br />
plant<br />
37.03 ** 18.75 ** 0.61 4.05 18.14 0.22 0.18<br />
533.32 ** 360.87 ** 1.28 59.12 359.60 0.16 0.25<br />
6 Seed yield per plant (g) 7.16 ** 30.70 ** 0.16 0.78 30.54 0.03 0.05<br />
7 100 seed weight (g) 276.73 ** 20.19 ** 1.35 30.60 18.83 1.62 0.75<br />
* Significant at Pd”0.05, ** Significant at P d”0.01, gca – general combining ability; sca – specific combining<br />
ability; s² gca – variance due to gca ; s² sca – variance due to sca. h 2 - heritability in narrow sense<br />
Table 2. Estimates <strong>of</strong> general combining (gca) effects for seven yield attributes in Chickpea<br />
S.<br />
No.<br />
Genotype<br />
Character<br />
NBeG-3 JG-11<br />
ICCV0<br />
5106<br />
M N<br />
K-1<br />
ICCV9<br />
5333<br />
KAK-2<br />
Vihar<br />
S.Em<br />
<strong>of</strong> Gi<br />
S.Em<br />
<strong>of</strong><br />
Gi-Gj<br />
1<br />
Days to 50<br />
percent Flowering -0.476 -3.03** -2.59 ** 1.97 ** 1.60 ** 0.49 2.04 ** 0.48 0.73<br />
2 Days to maturity -1.00 ** -1.15 ** -0.30 0.85 ** 0.00 -0.185 1.78 ** 0.24 0.37<br />
3 Plant height -2.02 ** -2.75 ** 0.53 4.92 ** 1.91 ** -2.63 ** 0.04 0.33 0.50<br />
4<br />
Number <strong>of</strong><br />
branches per<br />
plant<br />
2.22 ** 2.85 ** -0.01 -3.18 ** -1.08 ** -0.55 * -0.25<br />
0.24 0.37<br />
5<br />
6<br />
7<br />
Number <strong>of</strong> pods<br />
per plant<br />
Seed yield per<br />
plant<br />
100 seed<br />
weight<br />
2.77 ** 12.19 ** 3.16 ** -12.95 ** -3.95 ** -2.22 ** 1.02 ** 0.35 0.53<br />
0.76 ** 0.46 ** -0.71 ** -1.41 ** -<br />
0.56 ** 0.51** 0.96 ** 0.12 0.19<br />
-3.71 ** -6.61 ** -3.34 ** 10.31 ** 3.00 ** -0.38 0.73 * 0.36 0.55<br />
*Significant at Pd” 0.05 , **Significant at Pd”0.01<br />
traits, JG-11 and ICCV 05106 recorded significant<br />
desirable negative gca effects for days to 50 per cent<br />
flowering, while, NBeG-3 and JG-11 for days to<br />
maturity, suggesting that these parents could be good<br />
general combiners for breeding for earliness. <strong>The</strong> high<br />
general combining ability for plant height and 100<br />
seed weight was recorded in MNK-1 and ICCV 95333.<br />
For seed yield per plant the genotypes viz., NBeG-3,<br />
80