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Asian Journal of Crop Science
  Year: 2015 | Volume: 7 | Issue: 1 | Page No.: 19-33
DOI: 10.3923/ajcs.2015.19.33
 
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Determination of Combining Ability and Heterosis of Grain Yield Components for Maize Mutants Based on Line×Tester Analysis

D. Ruswandi, J. Supriatna, A.T. Makkulawu, B. Waluyo, H. Marta, E. Suryadi and S. Ruswandi

Abstract:
Determination of combining abilities and heterosis of parental lines is very important in selecting the mutant lines and in deciding breeding strategies for maize hybrid production. New 46 mutant lines were crossed to 3 tester lines in a lines×testers mating design. Around 138 F1 hybrids, including the 46 parental lines and 3 tester lines were evaluated at Arjasari, West Java, Indonesia for estimation of combining abilities and heterosis of new mutant lines for yield and its components and identification of hybrid combinations based on crosses of selected mutant lines with testers. Combining ability effects revealed that none of the mutant line possessed desirable General Combining Ability (GCA) effects for all the traits studied. Mutant line M5DR 16.1.1. was found to have the highest positive and highly significant GCA effect for grain yield followed by mutant lines M5DR 9.1.3, M5 DR 4.8.8, M5 DR 3.1.2, M5 DR 18.4.1 and M5BR 153.1.2. The estimates of specific combining ability demonstrated various cross combinations having significant positive Specific Combining Ability (SCA) effects. The highest magnitude of desirable SCA effects for grain yield/plant was detected in M5 DR 16.2.1×DR 4 followed by M5BR 153.6.1×DR 6, M5BR 153.1.2×DR 4, M5DR 9.1.3×DR 8, M5DR 4.8.8×DR 4, M5DR 3.1.2×DR 6, M5DR 3.1.2×DR 8 and M5DR 18.4.1×DR 8. Not all the crosses exhibited significant positive heterosis over mid parent for grain yield, however, the cross combination M5BR 153.1.2×DR 4 followed by M5DR 3.1.2×DR 6, M5DR 3.1.2×DR 8, M5DR 1.6.3×DR 8, M5DR 4.8.8×DR 4 and M5DR 18.4.1×DR 8 revealed higher magnitude of economic heterosis for grain yield. So, the crosses M5 DR 16.2.1×DR 4 and M5BR 153.1.2×DR 4 can be utilized for developing high yielding hybrid varieties as well as for exploiting hybrid vigor.
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How to cite this article:

D. Ruswandi, J. Supriatna, A.T. Makkulawu, B. Waluyo, H. Marta, E. Suryadi and S. Ruswandi, 2015. Determination of Combining Ability and Heterosis of Grain Yield Components for Maize Mutants Based on Line×Tester Analysis. Asian Journal of Crop Science, 7: 19-33.

DOI: 10.3923/ajcs.2015.19.33

URL: https://scialert.net/abstract/?doi=ajcs.2015.19.33

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