ISSN 2736-1756
Advanced Journal of Microbiology Research Vol. 2006
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2006 International Scholars Journals
Full Length Research Paper
Yield stability analysis of pearl millet hybrids in Nigeria
Y. Yahaya1*, C.A. Echekwu2 and S.G. Mohammed2
1Lake Chad Research Institute, Maiduguri, Nigeria.
2Department of Plant Science, Institute for Agricultural Research, Ahmadu Bello University, Zaria, Nigeria.
Accepted 11 August, 2005
Abstract
Genotype x environment interaction in pearl millet [Pennisetum glaucum (L.) R.Br.] was studied for grain yield by growing 90 genotypes consisting of 81 hybrids and 9 inbred parents at 5 locations for 2 years. Genotype x environment interaction was observed, a large component of which was accounted for by non-linear regression on the environment means. Although the linear portion was significant, its magnitude was smaller than that of the non-linear component indicating the significance of environmental effects on the genotypes. Six hybrids were found to be stable across the environments. They yielded above the average mean yield of all the genotypes under test, with a slope of unity and the mean square due to deviation from regression equal to zero.
Key words: Genotype x environment interaction, yield, stability, pearl millet.