Evaluation of Maize Germplasm for Resistance to Maize Dwarf Mosaic Virus Strain B

doi:10.3321/j.issn:1000-7091.2001.02.008

Abstract

Abstract: Seventy maize germplasm inoculated twice by hand rubbing on the leaves with the infectious leaf solution plus 600 mesh of carborundum were evaluated for resistance to maize dwarf mosaic virus strain B in Tangshan Institute of Agricultural Sciences,Hebei province.The rating system was conducted on a scale of 0 to 3 and disease severity index(%) was used to distinguish resistant or susceptible genotypes which represented 0-10% high resistant;10.1%-30% resistant;30.1%-40% moderately resistant and 40% susceptible.The results showed that three domestic and one exotic maize lines and three single crosses were high resistant;seven domestic and six exotic lines,and three hybrids resistant,six lines and three CIMMYT populations moderately resistant and others susceptible.The application of these germplasm in maize breeding program was discussed.

Key words: Maize , Maize dw arf mosaic virus strain B , Resistance evaluation

CLC Number:

S43.131

Li Haixin, Han Haiqing, Zhang Jinghui, Zhang Shihuang. Evaluation of Maize Germplasm for Resistance to Maize Dwarf Mosaic Virus Strain B[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2001, 16(2): 38-42. doi: 10.3321/j.issn:1000-7091.2001.02.008.

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