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高粱品種抗黍蚜(Melanaphis sacchari(Zehntner))檢定之研究

STUDIES ON THE RESISTANCE OF SORGHUM VARIETY TO SORGHUM APHID, MELANAPHIS SACCHARI (ZEHNTNER)

摘要


黍蚜(Melanaphis sacchari(Zehntner))為高粱主要害蟲,繁殖力強,發育期短,常於短期內,蔓延成災,尤以孕穗及抽穗期前後為害最為嚴重。一般而言,溫度及雨量皆能影響棲群之升降,但據本試驗結果而知,雨量之影響較為顯著。高粱抗黍蚜共檢定95個品系,試驗結果,供試高粱稔性恢復系統(R-Line),抗級3個,10品系中抗,21品系中感,17品系感,2個為極感品系,高粱雜交組合(Combination),2品系抗,2品系中抗,12品系中感,16品系感,10個為極感品系。

關鍵字

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並列摘要


The sorghum aphid, Melanaphis sacchari (Zehntner), is one of the major pests of grain sorghum in the central Taiwan. High population of the aphid ubiquitously occurs on the booting and the heading stage of the host plant. It reduces the quality and yield of the grain sorghum severely. Both temperature and rainfall are influential factors on the abundance of the aphid, especially the effect of the latter factor is remarkable. The resistance of sorghum to aphid is estimated with 95 varieties of the sorghum, the result of the work reveals 5 degree of resistance groups in the tested 53 varieties, they are consisted with 3 resistant, 10 moderately resistant, 21 moderately susceptible, 17 susceptible and 2 highly susceptible varieties in R-line. The result of test on the combination, 2 resistant, 2 moderately resistance, 12 moderately susceptible, 16 susceptible and 10 highly susceptible varieties are obtained.

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