【摘要】 供试的17个高赖氨酸玉米[即“奥柏克-2”玉米（opaque-2）,简称“o₂”玉米]自交系对串珠镰刀菌穗腐病的抗性存在极显著差异,其中大部分抗性较好,但没有发现免疫的。一般感病的o₂玉米自交系比其正常同型系更感病,抗病的o₂玉米自交系与其正常同型系的抗性差异较小。10个o₂玉米自交系间的抗性一般配合力和特殊配合力存在显著差异,二南24/o₂的抗性一般配合力最高,R805/o₂最低,组合自330/o₂×R805/o₂的抗性特殊配合力最高, B₁₄/o₂×北43052-2/o₂最低,在接种技术（即用针刺注射、插牙签、花丝喷雾法在授粉后10、20、30天接种）方面,以投粉后10天用针刺注射法接种,效果最好。更多还原

【Abstract】 The seventeen opaque-2 maize Lines in resistance to ear rot caused by Fusarium moniliforme have been identified, the difference among Lines in resistance to ear rot is significant. most of which are much more resistant, but no immune. Ear rot is more severe on susceptible o₂ maize inbreds than their normal counterparts. However, there is a little difference in resistance to ear rot between resistant o₂ line and its normal counterpart. The results indicate that there are significant differences in resistant general & specific combining alility （GCA, SCA） in ten o₂ maize lines. Among the resistant GCA of ten o₂ lines, line Ernan 24/o₂ is the highest, line R805/o₂ is the lowest. Among the resistant SCA of 45 F₁ combinations, Zhi330/o₂×R805/o₂ is the highest, B14/o₂×Bei-43052-2/o₂ is the lowest. The results of comparing inoculative techniques for identifing o₂ maize lines in resistance to ear rot show that the accupuncture method is the best of three inoculation methods （accupuncture, toothpick silk-spray method）, the best one of three inoculative periods （10, 20, 30 days after pollination） is 10 days after pollination.更多还原