Proceedings of the Fifth Asian Regional Maize Workshop - Search ...

increasing the yield levels of the winter maize with the use of more productive hybrids.
Table 4. seed index protein, oil and starch (on dry basis) in maize released varieties and
hybrids.
seed index Starch Oil Protein
Varieties (g/100 kernel) (X dry basis) (X dry basis) (X dry basis)
D-765 18.7 69.22 5.41 10.32
Deccan-103 28.5 71.12 5.58 9.79
8weta 20.0 69.22 5.19 11.66
Renuka 26.0 67.97 5.34 12.62
Hi-starch 34.0 71.86 5.20 10.22
Arun 19.6 67.90 5.62 10.89
Deccan-105 21.4 67.01 5.11 11.83
Dhawal 32.8 66.20 3.80 12.63
Harsha 20.4 63.31 4.55 12.62
Ganga-11 30.0 69.47 4.81 10.76
Vikram 25.0 65.14 4.89 12.50
Varun 18.8 66.21 4.39 11.96
Diara-3 17.0 67.16 4.97 9.16
Ageti-76 22.3 69.12 4.71 10.61
Parbhat 24.3 69.97 5.17 9.46
NLDOFP-106 22.7 65.19 4.10 12.66
Shakti 20.4 66.78 5.36 10.12
Navjot 22.7 66.60 3.72 10.04
Rattan 25.5 65.04 5.32 9.71
50na 25.6 68.08 4.97 10.62
Kiram 20.7 69.27 4.70 11.60
MCU-508 20.1 71.32 4.33 10.66
Kisan 21.4 69.05 3.94 12.51
*
Based on 96" value of pure starch.
STAEt«'ffiENING OF HYBRID PRmAM.
In 1989, lCAR initiated a special program aimed at the development of hybrids in nine
selected crops including maize. In maize, major emphasis has been given on evolving high
yielding hybrids suitable for winter (rabi) cultivation. Similarly, for summer season a need for
development of early maturing hybrids has been realized. Also the necessity of developing single
cross hybrids with higher yield potential has been felt.
Developnent of broad based pools for the hybrid progr8lll.
As indicated elsewhere, a program was initiated for extraction of inbred lines by
composite breeding methodology, however the lines so derived could not yield to the expected
levels. Development of inbred lines out of heterotic pools yielded more productive hybrids in a
relatively shorter period of time. Eight pairs of complementary heterotic pools in various
maturity groups have been developed to meet the above need as a long term strategy. For stepping
up genetic variability in the conventional hybrid breeding and for developing cultivars for
specialized uses, new genetic variability has been introduced in the breeding materials.
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