Studying yield and yield components of Early Maturing Maize (Zea mays L.) Inbred Lines in Central Rift valley of Ethiopia
Mieso Keweti Shengu
Plant Science Department, College of Agriculture and Natural Resources, Dilla University, P.O. Box: 419, Dilla, Ethiopia
Citation: Shengu MK. (2017). Studying yield and yield components of Early Maturing Maize (Zea mays L.) Inbred Lines in Central Rift valley of Ethiopia. International Journal of Plant Breeding and Crop Science 4(2): 268-275.
Copyright: © 2017 Shengu MK. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.
The objective of the study was to evaluate yield and yield components of early maturing maize inbred lines in moisture stress areas of Ethiopia. Fifteen inbred lines were crossed in a diallel mating design; three standard checks with105 hybrids were evaluated in Alpha Lattice Design in two replications at three locations. Most studied traits showed significant for entries, hybrids, checks, checks versus hybrids, interaction of entries x location and hybrids x location. The highest grain yield was obtained from hybrids, Line7 x Line15 (8.05t/ha), L9 x L15 (6.44t/ha) andL14 x L15 (9.37t/ha) whereas, the lowest yield was recorded from hybrids, L4 x L8, L1 x L2 or L3 x L9 and L4 x L3 at Melkassa, Mieso and Zeway, in the that order. Mean of hybrids and standard checks across locations indicated that the highest grain yield of 7.2 and 7.1 (t/ha) were obtained from standard checks Melkassa hybrid-130 and BH-543 respectively. Among the hybrids, the best yield of 7.0, 6.7 and 6.6 (t/ha) were recorded for L12 x L15, L7 x L15 and L14 x L15, in that order. The lowest grain yield was obtained from hybrid, L4 x L8 (2.8 t/ha). Lines, L5 x L6 and L5 x L10 were early maturing hybrids across the locations. Hence, hybrids involving L15 as one of its parent yielded better at all locations. The study identified inbred lines and hybrid with desirable traits that will be useful for selecting high yielding and early maturing hybrids for drought areas of the country.
Keywords: Central Rift Valley, early maturing, maize, inbred lines, yield and yield components