Evaluation of Diallel Crosses of Highland Adapted QPM Maize Hybrids under Optimum and Low Nitrogen Conditions

Abstract

Quick Response Code Abstract: Eight inbred lines collected from Ambo Agriculural Research Center Highland maize sub-program and were evaluated under optimum and Low Nitrogen condition at Ambo and Haramaya University in 2018. Breeding programs have created inbred lines of maize introduced from CIMMYT; they were tested locally for their heterosis. The objective of this study was to generate information regarding the combining ability effect of selected highland adapted maize inbred lines and their crosses for further breeding and cultivar development in view of this limitation. P6 was the lines that exhibited positive and hence good combiner for gain yield in all locations and environmental condition and crosses found to be good yield potential in this study were (P1xP2), (P2xP7) and (P4xP6).