Summary
Triple-testcross experiments were used to analyze epistatic contributions to larva weight, pupa weight, pupa width and adult weight in Tribolium castaneum. Seven diverse inbred lines and the F1. produced by crossing the two tester lines were examined for indications of epistasis. Larva weight was the only trait for which no significant epistasis was detected. There was significant epistasis for pupa weight in three of the inbred lines; for pupa width in four of the inbred lines; for adult weight in five of the inbred lines. Only one inbred line and the F1 line failed to exhibit significant epistasis for any trait. Each inbred line had a unique pattern of epistasis, suggesting that a number of different loci were contributing to the detected epistasis.
Similar content being viewed by others
Literature
Barker, J.S.F.: The state of information concerning deviations from additivity of gene effects. 1st World Congress on Genetics Applied to Livestock production. 1, 373–383 1974
Comstock, R.E.; Robinson, H.F.: The components of genetic variance in populations of biparental progenies and their use in estimating the average degree of dominance. Biom 14, 254–266 (1948)
Comstock, R.E.; Robinson, H.F.: Estimation of average dominance of gnes. Heterosis. Iowa State College Press, Ames, Iowa 1952.
Enfield, F.D.; Comstock, R.E.: Goodwill, R.; Braskerud, O.: Selection for pupa weight in Tribolium castaneum. II. Linkage and level of Domiance. Genetic 62, 849–857 (1969)
Goodwill, R.: An analysis of the mode of gene action affecting pupa weight in Tribolium castaneum. Genetics 79, 219–229 (1975)
Horner, T.W.; Comstock, R.E.; Robinson, H.F.: Nonallelic gene interactions and the interpretation of quantitative genetic data. Tech. Bull. N.C. Agric. Exp. Sta. No. 118, (1955)
Jana, S.: Simulation of quantiative characters from qualitatively acting genes. I. Nonallelic gene interactions involving two or three loci. Theor. Appl. Genet. 41, 216–226 (1971)
Jana, S.: Simulation of quantitative characters from qualitatively acting genes. II. Orthogonal subdivision of hereditary variance in two locus genetic systems. Ther. Appl. Genet. 42, 119–124 (1972)
Jinks, J.L.; Perkins, J.M.; Breese, E.L.: A general method of detecting additive, dominance, and episstatic components of variation for metrical traits. II. Application to inbred lines. Heredity 24, 45–57 (1969)
Jinks, J.L.; Perkins, J.M.: A general method for the detection of additive, dominance, and epistatic components of variation. III. F2 and backcross populations. Heredity 25, 419–429 (1970)
Kearsey, M.J.; Jinks, J.L.: A general method of detecting additive, dominance, and epistatic variation for metrical traits. I. Theory. Heredity 23, 403–409 (1968)
Snedecor, G.W.; Cochran, W.G.: Statistical Methods. The Iowa State University Press, Ames, Iowa 1968
Walkter, R.D.: The effect of epistasis on several metric traits in Tribolium castaneum. Ph. D. Dissertation, University of Kentucky, Lexington, Kentucky. 1974
Author information
Authors and Affiliations
Additional information
Communicated by H. Abplanalp
This paper (No. 76-5-158) is published with the approval of the Director of the Kentucky Agricultural Experiment Station.