GENETIC VARIABILITY AND HERITABILITY IN SOME GENOTYPES OF MAIZE | ||
| Journal of Plant Production | ||
| Article 6, Volume 29, Issue 10, October 2004, Pages 5475-5482 PDF (2.26 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2004.238826 | ||
| Authors | ||
| A. M. Abdel Aziz,1; M. A. Abdel Khalik2 | ||
| 1Cent. Lab. for Design and Stat. Analysis Research. ARC. Giza-Egypt. | ||
| 2Central administration for seed testing and certification. Ministry of Agricultural and Reclamation- Giza-Egypt. | ||
| Abstract | ||
| This investigation was carried out at Sakha and Gemmeiza Research stations during the summer season of 2003 to evaluate the behaviour of twelve maize genotypes received from Field Crops Research Institute, Agricultural Research Center, to determine the phenotypic, genotypic, environmental variations, heritability in broad sense, genotypic and phenotypic coefficients of variation. Combined data over the two locations indicated that average performance for grain yield ranged from 164.8 gm (r.W.C. 320) to 258.2 gm (S.C. 10). At the two locations and combined data, plants of Oahab were earlier than the other genotypes in days to mid silk and days tasseling ,Pioneer 3062 gave the highest number of rows/ear. S.C. 10 gave the highest number of kernels/row, whereas, 8ashayer gave the highest weight of 100 kernel (gm) .Estimates of phenotypic ( ph), genotypic (g) and environmental variance reached highest estimates concerning grain yield/plant (gm) and number of kernels/row. Estimates of genotypic and phenotypic coefficient of variation revealed high values in grain yield/plant (gm), number of rows/ear, number of kernels/row and 100 kernel weight (gm). Grain yield/plant (gm) and days to tasseling showed high broad sense heritability estimates (over 80%). | ||
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