Wild Oat/Barley Interactions: Varietal Differences in Competitiveness in Relation to K+ Supply |
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| Authors: | SIDDIQI M Y; GLASS A D M; HSIAO A I; MINJAS A N |
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| Institution: | Department of Botany, The University of British Columbia Vancouver, B.C., Canada V6T 2B1
* Agriculture Canada, Research Station Box 440, Regina, Sask., Canada S4P 3A2
 Department of Crop Science, University of Dar es Salaam Morogoro, Tanzania |
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| Abstract: | Eight cvs of barley (Hordeum vulgare L.) were separately plantedwith Wild Oats (Avena fatua L., genetically pure line CS40)in a sand culture with two external K+ concentrations. Substantialdifferences were observed among barley cvs in their abilityto compete with wild oat. The variety Fergus was highly competitiveat both high and low K+]e, whereas Steptoe was competitiveonly at high K+]e, and Compana was only weakly competitivewith wild oat. The differences between barley cvs were relatedto their previously reported efficiencies of K+ uptake and utilization. Hordeum vulgare L., Avena fatua L., barley, wild oat, competition, K+ nutrition, utilization efficiency |
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