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Five sorghum lines from Indian germ plasm and two susceptible varieties (Tx7078 and RS-610 hybrid) were evaluated for resistance to the sorghum-shoot-fly (Ath. erlgona varia). The lines were tested under both natural and artificial infestation.
Three selections possessed a satisfactory rate of resistance, controlled by three mechanisms: a) nonprelerence for oviposition, b) avoiding larva penetration through the leaf sheaths, and c) resistance of tillers formed after the growing apex destruction.
2 Research Agronomist, Division of Field Crops, The Volcani Institute of Agricultural Research, Bet Dagan, Israel.
Received for publication February 16, 1967.
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