Department of Plant Breeding, G. B. Pant University of Agriculture and Technology, (Pantnagar) (Nainital), U.P.
Online published on 25 January, 2012.
The dwarf and normal versions of five inbred lines and four single crosses of maize were grown at two nitrogen levels in split-plot design to study the effect of in-corporation of brachytic-2 gene. It was observed that the dwarf version, averaged over all the genotypes, had more ear length and thousand kernel weight,]ess plant height in both the experiments and more yield, ear diameter and leaf area in experiment I (150 kg. N/ha). There were no significant differences with respect to other characters. It was also observed that the effect brought about by the incorporation of br-2 gene was variable in different genetic backgrounds. This suggests that high yield and high degree of lodging resistance could be combined by in-corporating br-2 gene into suitable genetic backgrounds.
