Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 October 1960
Published in Agron J 52:575-578 (1960)
© 1960 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Recurrent Selection for Seed Weight in Bromegrass, Bromus Inermis Leyss.1

B. R. Christie and R. R. Kalton2

Synopsis: Among 203 bromegrass clones grown in a topcross nursery, the range in mean seed weight was 0.60 to 1.26 g. per 300 seeds. Ten clones of high and 10 of low seed weight were selected and recombined in separate, isolated polycross blocks. The range in mean seed weight among 986 progeny plants was 0.44 to 1.62 g., and the means of the 2 groups of polycross progenies were significantly different. Almost 50 progeny plants were superior to the best parent clone in seed weight.

1 Contribution from the Agronomy Department, Journal Paper No. 3784 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project 1333. Part of a thesis submitted by the senior author in partial fulfillment of requirements for the Ph.D. degree.

2 Formerly Graduate Assistant (now Assistant Professor of Field Husbandry, Ontario Agricultural College, Guelph) and formerly Professor of Farm Crops (now Research Director, Rudy-Patrick Seed Co., Kansas City, Mo.).

Received for publication January 6, 1960.




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Copyright © 1960 by the American Society of Agronomy.