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Asian Journal of Plant Sciences
  Year: 2003 | Volume: 2 | Issue: 10 | Page No.: 743-747
DOI: 10.3923/ajps.2003.743.747
 
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Phenotypic Stability of Selected Tropical Maize Genotypes at Four Locations

Than Da Min and Ghizan B. Saleh

Abstract:
The analysis of genotypes by environmental interactions in essential in plant breeding programme because it indicates the stability of genotypes before release. Highly stable genotypes are desirable. In the present study, the stability of performance of selected 14 grain maize genotypes were evaluated at four different locations in Malaysia for grain yield, number of kernels per ear row and 100-grain weight. For average main yield, number of kernels per ear rows and 100-grain weight ranged from 4541 to 6110 kg ha-1, 32.6 to 38.0, 23.1 to 26.4 g respectively. The different methods of stability analyses were in close agreement with each other in revealing the stability of the genotypes evaluated. Selected GxA was identified as the genotypes with highest grain yield and most stable performance. TWC-5 was the lowest yielding and the most unstable. For number of kernels per ear row, SC-2, TWC-2 and Selected GxA were the most stable. For 100-grain weight, Suwan 1 was the best performer, revealing average stability. The high stability of Selected GxA was probably due to its nature of having a broader genetic base, being a synthetic population, as opposed to its hybrid counterparts.
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How to cite this article:

Than Da Min and Ghizan B. Saleh , 2003. Phenotypic Stability of Selected Tropical Maize Genotypes at Four Locations. Asian Journal of Plant Sciences, 2: 743-747.

DOI: 10.3923/ajps.2003.743.747

URL: https://scialert.net/abstract/?doi=ajps.2003.743.747

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