安定区马铃薯不同品种田间抗病性评价

Evaluation of Various Potato Varieties for Disease Resistance in Anding District

为了进一步验证不同品种在定西市安定区的田间抗病性,筛选出适宜安定区种植的马铃薯抗病新品种,经过试验,观察不同品种的植株性状、块茎性状及病毒病、早疫病、晚疫病的田间发病率。结果表明,各品种以‘青薯9号’对病毒病、早疫病及晚疫病抗病性表现最好,田间长势好,产量最高,为43 444 kg/hm2,较对照‘新大坪’增产48.39%,适宜大面积推广种植。建议‘陇薯7号’、‘陇薯13号’、‘庄薯3号’和‘陇薯6号’进一步试验。

Various potato varieties were evaluated for their disease resistance in Anding District in order to identify the varieties adapted to Anding District and their plant traits,tuber traits and resistance to viral disease,early blight,and late blight were studied in a field trial.'Qingshu 9' had the best performance among the varieties tested in resistance to viral disease,early blight,and late blight,with good plant vigor and the highest yield being 43 444 kg/ha,increasing by48.39%,when compared with the control variety 'Xindaping'.Therefore,this variety is suitable for extension on a large scale.'Longshu 7','Longshu 13','Zhuangshu 3' and 'Longshu 6' need further tests.