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Genecology and seed zones for Indian ricegrass collected in the Southwest US


R. C. Johnson
M. J. Cashman
K. Vance-Borland



Publication type:

Scientific Journal (JRNL)

Primary Station(s):

Rocky Mountain Research Station


Rangeland Ecology and Management. 65(5): 523-532.


Indian ricegrass (Achnatherum hymenoides [Roemer & J.A. Schultes] Barkworth) is a widely distributed, highly desirable native species in desert ecosystems in the western United States. Yet there are no studies linking genetic variation in Indian ricegrass with climate across major areas of its natural distribution. In this study, seeds from 106 collection locations from the southwestern United States were established in common gardens and four phenological traits (Phen; such as blooming date), six production traits (Pro; such as dry weight), and eight morphology traits (Morph; such as leaf dimensions) were measured in 2007 and 2008. Analyses of variance revealed that all basic garden traits differed among source locations (P < 0.01), indicating widespread genetic variation.


Johnson, R. C.; Cashman, M. J.; Vance-Borland, K. 2012. Genecology and seed zones for indian ricegrass collected in the southwestern United States. Rangeland Ecology and Management. 65(5): 523-532.


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