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

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

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。

Phenotypic resistance to stalk rot and lodging resistance of 83 maize varieties for mechanical grainharvest 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.