title: Problems of generalization of selection indices.
abstract: The present investigation was undertaken to study the problem of generalization of the selection index in plant breeding. It was found that specific selection indices brought about the maximum genetic advance, provided that they were used for selection in the specific populations. If these indices were used as "foreign indices" the gain was negligible. The general selection indices, which were based on corrected pooled information from different experiments, were found to be as efficient as the specific indices. The problems of sampling, specific populations and base population of a crop species, and the application of general indices in a practical breeding programme have been discussed in detail.
authors.affiliation: Institut für angewandte Mathematik und Mechanik der Akademie der Wissenschaften der DDR, Berlin.
authors.forename: R K
authors.initials: RK
authors.lastname: Singh
authors.forename: K
authors.initials: K
authors.lastname: Bellmann