机收玉米品种收获期田间茎腐病抗性表型和植株倒伏状况调查

2009年收获期对83个机收玉米品种进行玉米茎腐病抗性表型和植株抗倒性调查,筛选出对茎腐病表现中等抗病以上的品种49个,倒伏率≤5%的品种16个,≤8%的品种29个。综合各品种对玉米茎腐病抗性表型和倒伏倒折状况,筛选出25个适宜辽宁中部和北部玉米产区的机收品种。

Investigation of the Phenotypic Resistance to Stalk Rot and Lodging Resistance of Maize Varieties for Mechanical Grain-Harvest at Harvest Stage

Phenotypic resistance to stalk rot and lodging resistance of 83 maize varieties for mechanical grain-harvest were investigated in this research. There were 49 maize varieties that showed moderately resistant, resistant, or highly resistant. Lodging rate of 16 varieties was less than or equal to 5%, however, there were 29 varieties whose lodging rate was less than or equal to 8%. Based on the phenotypic resistance to stalk rot and lodging resistance, 25 varieties were screened for mechanical grain-harvest that were suitable for the central and northern maize production areas of Liaoning province. They could alleviate the lack of suitable matching varieties for the promotion of mechanical grain-harvest technology in Liaoning maize production area.