HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by O'Brien, L. Articles by Evans, L. E. Search for Related Content PubMed Articles by O'Brien, L. Articles by Evans, L. E. Agricola Articles by O'Brien, L. Articles by Evans, L. E.

Response to Selection for Yield in F₃ of Four Wheat Crosses¹

Four wheat (Triticum aestivum L.) crosses with the cultivar ‘Glcnlea’ as a common female parent were used to investigate response to selection for yield in the F₃ generation. Selection was based on the mean performance of F₃ lines (seed from a single F₂ plant) grown in three replicate, three-row plot yield tests in 1975. Response to selection in each cross was measured using F₄ bulks, F₅ bulks, and the family mean of eight random F₅ lines. Significant response to selection was observed for Crosses I and II. These two crosses were characterized by wide yield range and a relatively high genetic variance among lines in the F₃ yield test. In Crosses III and IV, which were characterized by less yield range and genetic variance among lines in the F₃ yield test, response generally was not significant. The effectiveness of early generation yield testing was influenced by the amount of environmental variation among generation means and the amount of genotype and genotype x environmental variation. Realized heritabilities were lower than those estimated from testing at one location in a single year in all four crosses.

Key Words: Triticum aestivum L. • Early generation yield testing

² Geneticist on leave, Wheat Res. Inst., P.B. 260 Horsham, Australia, research scientist, Agriculture Canada and professor, Dep. of Plant Science, respectively.

Received for publication February 8, 1978.

This article has been cited by other articles:

				J.M. Hegstad, G. Bollero, and C.D. Nickell Potential of Using Plant Row Yield Trials to Predict Soybean Yield Crop Sci., November 1, 1999; 39(6): 1671 - 1675. [Abstract] [Full Text]