Off-campus UNL users: To download campus access dissertations, please use the following link to log into our proxy server with your NU ID and password. When you are done browsing please remember to return to this page and log out.
Non-UNL users: Please talk to your librarian about requesting this dissertation through interlibrary loan.
ESTIMATION OF GENETIC PARAMETERS FROM GENERATION MEANS AND THEIR USE IN PREDICTION OF HYBRID PERFORMANCE IN ZEA MAYS (L.).
Abstract
The development of hybrid corn constitutes one of the most important advances in American agriculture in the past century. Many workers have participated in studies which led ultimately to the large scale commercial use of corn hybrids. Shull (1909) first suggested single-cross hybrids between two inbred lines. However, inbred lines available at that time were not capable of producing hybrids that were sufficiently better than the best open-pollinated varieties to make them attractive to the farmer.Low seed yield and poor seed quality of the inbred ear- parents made the production of single-cross hybrids very expensive. Jones (1918) suggested the production of double-cross hybrids from two single-cross hybrids to make the production of hybrid corn economicallyfeasible.
Subject Area
Agronomy
Recommended Citation
JOHNSON, CARL WILLIAM, "ESTIMATION OF GENETIC PARAMETERS FROM GENERATION MEANS AND THEIR USE IN PREDICTION OF HYBRID PERFORMANCE IN ZEA MAYS (L.)." (1974). ETD collection for University of Nebraska-Lincoln. AAI7423915.
https://digitalcommons.unl.edu/dissertations/AAI7423915