Combining ability analysis in inter varietal crosses of maize (Zea mays L.)

摘要

A ten parent diallel cross of indigenous open pollinated maize lines without reciprocals and their 45 F_1s were assessed for their combining ability in yield and yield component characters. Both additive and non-additive genetic components were observed with the high magnitude of non-additive gene effects for all the twelve characters studied except days to tasseling and ear length. The composite variety BM-1 and the indigenous line IC 011 had good gca for grain yield / plant, ear girth, number of kernels/row, shelling percentage and 100-grain weight. The other lines IC 014 and IC 013 had good gca effects for reduced plant height and eariiness. The three crosses viz. IC 019 X IC 011, IC 0116 X IC(Y) 0111 and OC 01 3 X BM-1 composite were screened as the best sea effects for grain yield per plant.