Evaluation of barley yellow dwarf tolerance from plant traits in two winter × spring barley crosses |
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Authors: | Timothy F. Bourne J. M. Poehlman |
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Affiliation: | (1) Department of Agronomy, University of Missouri, 65211 Columbia, MO, USA;(2) Present address: Department of Horticulture, University of Arkansas, 72701 Fayetteville, AR, USA |
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Abstract: | Summary Winter-type experimental lines from crosses of two winter-type barley cultivars with a spring-type, barley yellow dwarf (BYD) tolerant cultivar were compared in inoculated and uninoculated hill plots. Mature plants traits-winter survival, height, number of spike-bearing tillers, and biomass-were examined. The experimental lines could not be compared with the BYD tolerant parent using these diagnostic symptoms since the spring-type parent would be winterkilled. Two criteria were used to rate experimental lines for BYD tolerance: (1) nonsignificant difference between BYD-inoculated and BYD-uninoculated treatments for all traits, and (2) a BYD injury score obtained by averaging percent reduction from BYD infection for each trait.Missouri Agricultural Experiment Station Journal Paper No. 10059. This research supported in part by Anheuser-Busch, Inc, St. Louis, MO, USA. |
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Keywords: | Hordeum vulgare barley barley yellow dwarf inoculated Rhopalosiphum padi Yd2 gene locus tolerance |
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