玉米杂交种抗丝黑穗病鉴定

采用人工接种鉴定方法评价了920个玉米杂交种对丝黑穗病的抗病性。结果表明，高抗型占1.3%，抗病型占10.1%，中抗型占12.6%，感病型占62%，高感型占20.9%。在不同区试类型品种中，中抗－高抗型中晚熟和青饲玉米较多，分别占37.1%和23.3%；早熟、夏播、特早熟玉米居中，分别占18.5%、17.3%、16.7%；糯、甜玉米较少，占8.6%和5.4%。经抗病鉴定，通过审定的160个品种有4个高抗、11个抗病、19个中抗。

Resistance Identification of Maize Hybrid to Head Smut Disease

Taking the method of artificial inoculation,the resistance of 920 maize hybrids to head smut were identified and evaluated.The result showed that 1.3% maize hybrids were highly resistant,10.1% maize hybrids were resistant,12.6% maize hybrids were moderately resistant,62% maize hybrids were susceptible and 20% maize hybrids were highly susceptible.Test of maize hybrid in different areas and types showed that 37.8% later-maturing maize hybrids and 23.3% succulence maize hybrids,18.5% early-maturing maize hybrids,17.5% summer-planting maize hybrids and 16.7% special-early-maturing maize hybrid,8.6% waxy maize hybrids and 5.4% sweet maize hybrids were moderately-highly resistant.Among 160 authorized maize hybrids,there were 4 highly resistant,11 resistant and 19 moderately resistant.