Survey of Resistance to Scald in World Collections of Cultivated Barley.

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  • 世界各地産の栽培オオムギ品種における雲形病抵抗性の探索
  • 世界各地産の栽培オオムギ品種における雲形病抵抗性の探索〔英文〕
  • セカイ カクチサン ノ サイバイ オオムギ ヒンシュ ニ オケル クモガタビョ

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Abstract

A total of 1315 barley cultivars originating from various regions of the world were tested for their resistance to scald (Rhynchosporium secalis (OUD.) DAVIS). Screening of the resistant cultivars was conducted by the application of two testing methods consisting of natural inoculation for the mature plants and artificial inoculation for the seedlings. In both tests, the disease reaction on a plant was classified into three types as follows; highly resistant (R), moderately resistant (M) and susceptible (S) reactions. In the field test for mature plants, 79 cultivars were found to be R and most of them were of Ethiopian and Turkish origin. There were only a few resistant cultivars of East Asian origin (Table 2). In the artificial inoculation test for the seedlings, 48 cultivars showed a highly resistant reaction, almost all of them being of Ethiopian and Turkish origin {Table 3). No cultivars with a R reaction were found in the East Asian materials. Finally, 17 cultivars were confirmed to be resistant in both tests for the mature plants and seedlings (Table 4). It was concluded that these 17 cultivars could become useful as genetic resources for resistance to scald.

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