Genetic analysis of resistance to head bug eurystylus oldi (poppius) in sorghum (Sorghum bicolor (l.) Moench

Showemimo, F.A. (2004) Genetic analysis of resistance to head bug eurystylus oldi (poppius) in sorghum (Sorghum bicolor (l.) Moench. Asian Journal of Plant Sciences, 3 (1). pp. 11-13.

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Abstract

Genetic analysis were carried out to determine heterotic effects, gene action and inheritance of resistance to head bug, Eurystylus oldi Poppius in four sorghum crosses. Resistance was found dominant over susceptibility. Significant negative heterotic effect above mid-parent and better parent for grain damage rating was detected for all crosses. Dominance gene action is more important for the three resistance traits: grain damage rating, floaters percentage and germination percentage. Inheritance to E. oldi is conditioned by one dominant gene in two F2 populations, while resistance in the remaining two F2 populations is controlled by two dominant genes and in part by genes at two or more loci.

Item Type: Article
Author Affiliation: Department of Plant Science, Institute of Agriculture, Research, Ahmadu Bello University, Samaru-Zaria, Nigeria
Subjects: Crop Improvement > Genetics/Genomics
Divisions: Sorghum
Depositing User: Mr T L Gautham
Date Deposited: 12 Dec 2010 22:24
Last Modified: 12 Dec 2010 22:25
Official URL: http://scialert.net/qredirect.php?doi=ajps.2004.11...
URI: http://eprints.icrisat.ac.in/id/eprint/970

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