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 Briggs, K. G. Articles by Shebeski, L. H. Search for Related Content PubMed Articles by Briggs, K. G. Articles by Shebeski, L. H. Agricola Articles by Briggs, K. G. Articles by Shebeski, L. H.

Visual Selection for Yielding Ability of F₃ Lines in a Hard Red Spring Wheat Breeding Program¹

The ability of fourteen plant breeders to visually select the highest yielding plots from a spring wheat (Triticum aestivum L. era. Thell.) nursery containing 828 F₃ lines was compared with results obtained by random selection. When a positive selection pressure of 10% was applied a significant improvement in yield over random selection was obtained. Conditions for effective visual selection were optimal in this study with the use of triple row, rod length plots with controls adjacent to each one. Despite these aids, and despite the general effectiveness of visual selection to improve yields, individual selectors demonstrated a rather limited ability to identify the actual highest yielding plots in the nursery. These results support the view that when visual selection is used as a means of screening lines in a plant breeding program the intensity of selection should be relatively low.

Key Words: Control plots • Screening methods

² o Assistant Professor (Cereals), Plant Science Department, University of Alberta, Edmonton 7, Alberta, and Dean of the Faculty of Agriculture, University of Manitoba, Winnipeg 19, Manitoba, Canada.

Received for publication January 27, 1970.

This article has been cited by other articles:

				B. Horneburg and H. C. Becker Crop Adaptation in On-Farm Management by Natural and Conscious Selection: A Case Study with Lentil Crop Sci., January 16, 2008; 48(1): 203 - 212. [Abstract] [Full Text] [PDF]