Date of this Version
Thesis (M.S.)--University of Nebraska–Lincoln, 1960. Department of Agronomy.
This investigation was undertaken in an effort to estimate the relative magnitude of genotype-environment interactions for material representing two quite different levels of heterogygosity.The general scope of the study included measurements of major agronomic characters such as yield, plant height and ear height of S1 inbred lines and their top cross progenies to determine the relative importance of line differences, ecological factors and interactions.
A group of 169 S1 lines derived from KIII and KII(A) synthetics and their top cross progenies were tested during the years 1958 and 1959, in an effort to estimate the amount of bias due to genotype x environment interactions for material representing two quite different levels of heterozygosity.
Estimates of total genetic variance made on the basis of these two quite different types of testing procedures indicate that predictions of considerable progress in yield are possible.However, a measure of the superiority of germ plasm selected from this material must await further evaluation techniques and is dependent upon the ultimate use to be made of the material.
Advisor: J. H. Lonnquist