Phenotypic stability parameters for some single and three way hybrids of maize, Zea mays L.
2010
Abd El-Maksoud, M.F. | Mansour, A.A.
The obtained results could be summarized as follows: Stability analysis of variance revealed highly significant mean squares of maize hybrids for all studied characters. Also, highly significant GxE linear interaction for all studied characters was recorded. The variance due to environments linear were highly significant for all studied characters. Phenotypic stability parameters indicated that maize hybrid, TWC 320 was classified as highly adapted to favorable environments for grain yield, plant height and ear height as well as TWC 322 for ear length; SC 124 and SC 129 for number of rows/ear; SC 122 for number of grains/ear; SC 103 and SC 122 for 100-grain weight and SC 122 for ear leaf area. Whereas, SC 10, TWC 321 and TWC 323 could be grown under Khattara as less favorable environment for grain yield/fad., ear length and ear leaf area. The most desired and stable hybrids were TWC 310, TWC 322 and SC 124 for grain yield; SC 103 and SC 122 for ear length, number of rows/ear and plant height; SC 124 and TWC 323 for number of grains/row; SC10, TWC 320, and TWC 321 for 100-grain weight; SC 103, SC 124 and TWC 322 for ear height and TWC 310, TWC 320 and TWC 322 for ear leaf area. It is worthy to mention that TWC 310 was the most stable maize hybrid and may be recommended to be included in any program for improving grain yield stability since, it has a high mean performance over environments with b value approached near unity and minimum values of both (S2d) and (CV) parameters.
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