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Varietal Differences in Seed Dormancy of Wild Oats

Published online by Cambridge University Press:  12 June 2017

J. J. Sexsmith
J. J. Sexsmith*
Affiliation:
Plant Science Section, Canada Agriculture Research Station, Lethbridge, Alberta
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Abstract

Differences in degree of seed dormancy were shown to exist both among and within the four varieties of wild oats (Avena fatua L. spp. fatua (L.) Thell.) occurring in natural infestations throughout southwestern Alberta. Among the varieties, pilosissima was the most dormant, intermedia was more dormant than vilis, and glabrata possessed about the same dormancy as intermedia. Dormancy was overcome more rapidly under dry storage in vilis and glabrata than in intermedia and pilosissima. Seed dormancy of most collections made in 1959 differed from that of collections made at the same locations in 1962, being both higher and lower by as much as 40% in either of the varieties vilis or intermedia. In seeds from plants grown as transplants at three sites, dormancy differed within varieties, but there was no consistent pattern of difference evident among sites.

Type
Research Article
Information
Weeds , Volume 15 , Issue 3 , July 1967 , pp. 252 - 255
Copyright
Copyright © 1967 Weed Science Society of America 

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References

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