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Testing for greenbug resistance on sorghum cultivars in Argentina


, : Testing for greenbug resistance on sorghum cultivars in Argentina. Sorghum Newsletter 34: 29

A total of 114 lines and controls Caprock (susceptible) and RTx2783 (resistant) were evaluated in a greenhouse to test their levels of resistance to a local Schizaphis graminum biotype similar to biotype E from the USA. Infestation was introduced using a volumetric method at a rate of ca. 15-20 aphids/seedling. Damage was rated visually 5 times at 3 day intervals after the plants had reached 5 cm and until Caprock had died.

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