Analysis of Resistance to Southern Rust of 46 New Maize Varieties from the Huang-Huai-Hai Region
Using 46 new maize(Zea mays L.)varieties exhibited by He'nan Seed Industry Development Center as materials,the ability of resistance to southern rust disease and its effect on yield traits were studied through the analysis of natural incidence and inoculation identification.The results showed that among the 46 main varieties,2 were high-resistant(HR)varieties,7 were resistant(R)varie-ties,19 were medium resistant(MR)varieties,10 were susceptible(S)varieties,and 8 were high susceptible(HS)varieties.With the improvement of breeding level,the resistance level of the above varieties increased year by year.Grain weight per spike and yield were positively correlated with re-sistance level.Among them,Jundan678,Mingding26,Hangxing708,Jundan658,Zhongkeyu 505,Anyu706,Xiandai959,Jinbei516,Zhongyu303,NK815,YD807,Xinnongke898 and other varieties of southern rust resistance and yield were good.Tropical and subtropical related maize materials had good resistance to southern rust disease and could be used as an effective antigen for improving tem-perate germplasms.
万方数据
维普
