Journal of Current Research in Food Science
2023, Vol. 4, Issue 1, Part A
Combining ability analysis in mid-land maize (Zea Mays L.) for grain yield and yield related traits at Haro Sabu, West Ethiopia
Author(s): Dereje Abera, Habtamu Zelleke and Legesse Wolde
Abstract: Estimating the combining ability and gene action is paramount important in designing future breeding in newly developed maize inbred lines. The experiment was conducted at Haro Sabu Agricultural Research Centre during the 2019 cropping season with the objective to estimate combining ability and to identify the direction and magnitude of gene action involved in maize test crosses. Eighteen inbred lines and 4 single cross testers were crossed in line x tester mating design. The resulting 72 F1 crosses and 3 standard checks (BH543, BH546, and BH547) were evaluated in a 5x15 alpha-lattice (0, 1) design with 2 replications. Mean square due to general combining ability (GCA) were significant for all traits except for mean square due to testers for harvesting index, anthesis silking interval, days to anthesis, days to silking, and days to maturity. The mean square due to the specific combining ability (SCA) effect showed significant differences for all traits excluding kernels per row, plant height, anthesis silking interval, days to silking, gray leaf spot, and tarcicum leaf blight. The significant GCA and SCA effects were indicative of the importance of both additive and non-additive gene actions. L3, L5, L6, L8, L11 inbred lines, and T1 and T2 testers were identified for desirable positive and significant GCA effects for grain yield. From 72 crosses; L3xT1, L11xT3, L10xT2 L12xT1, L17xT1, L9xT2, and L5xT1 exhibited maximum, desirable positive and significant SCA effect for grain yield. The identified elite parents and test crosses for grain yield and yield-related traits could be used in the maize breeding program.
Pages: 57-65 | Views: 22 | Downloads: 14
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How to cite this article:
Dereje Abera, Habtamu Zelleke, Legesse Wolde. Combining ability analysis in mid-land maize (Zea Mays L.) for grain yield and yield related traits at Haro Sabu, West Ethiopia. J Curr Res Food Sci 2023;4(1):57-65.
