Abstract
The chinch bug, Blissus leucopterus leucopterus (Say), rarely causes economic damage in wheat. However, large populations occasionally develop in wheat and move to sorghum where they cause economic damage. Therefore, wheat cultivars, wheat plant introductions, wheats rated as uninjured in a chinch-bug infestation by Jones (1937), and several Triticum species were evaluated for chinch-bug antibiosis in the laboratory and in field plots. The evaluations determined little difference in the reproduction, longevity, mortality, and development of chinch bugs feeding on most lines. A few lines exhibited a low level of antibiosis. However, the chinch-bug resistance identified would be insufficient to prevent the development of large chinch-bug populations.
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