The host selection, development and reproduction of sugarcane aphid, Melanaphis sacchari (Zehntner) were studied. Both alate and apterous virginoparous adults showed a stronger tendency of preference to a susceptible strain of sorghum and Cuba grass, Sorghum helepense (Persoon) than a resistant strain of sorghum and Eulalia, Miscanthus sinensis (Anderss). The number of days for larval development was increased with a decrease in longevity and fecundity in aphids reared on resistant sorghum at 25℃ under a 16-hour photoperiodic condition.ヒエノアブラムシの寄主選択行動と発育、繁殖について、温度25℃、16時間日長条件下で調査し、次のような結果を得た。有翅胎生雌虫、無翅胎生雌虫の成虫は感受性ソルガム（Redlan B）と野生のセイバンモロコシに対して強い選好性を示した。抵抗性ソルガム（P.E.954-177）は、感受性ソルガム（Redlan B）に比較する幼虫期間の遅延、産子数の低下および生存期間の短縮がみられた
