Appraisal of Resistance to Powdery Mildew and Molecular Marker Analysis of Pm4b of Wheat Varieties (Lines)

doi:10.7668/hbnxb.2014.02.010

Abstract

Abstract: In this study, the resistance to powdery mildew of 98 wheat varieties (lines) of Huanghuai wheat growth area was analyzed using seedling identification, artificial inoculation identification in the field and molecular marker analysis of Pm4b. There only 5% tested varieties had resistance to powdery mildew by seedling stage identi- fication. Field inoculation found 39 resistant varieties, accounting for 39% of the tested varieties. There were 3 sam- ples, accounting for 3% of the tested materials, detected the gene marker fragment of Pm4b by molecular markers detected. These varieties which were susceptible in the seeding but disease-resistant in the adult stage were potential adult-plant resistance variety which was more promising in future disease-resistant breeding. This study provides an important basis for powdery mildew resistance breeding of wheat.

Key words: Wheat, Powdery mildew, Pm4b, Appraisal of resistance

CLC Number:

Q78
S435.12

WANG Zhu-lin, LI Mei-xia, XI Ya-jun, LIU Shu-dong. Appraisal of Resistance to Powdery Mildew and Molecular Marker Analysis of Pm4b of Wheat Varieties (Lines)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(2): 56-61. doi: 10.7668/hbnxb.2014.02.010.

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