Genetics of resistance to powdery mildew (Microsphaera diffusa) in Brazilian soybean populations

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Genetics of resistance to powdery mildew (Microsphaera diffusa) in Brazilian soybean populations

Crosses between resistant and susceptible soybean cultivars were performed and the F2 populations were obtained to study the inheritance of soybean resistance to powdery mildew and to estimate the number and action of genes related to resistance. The reaction to powdery mildew was studied in a greenhouse and pots carrying plants with symptoms were distributed among the pots carrying the genotyp...

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Wheat powdery mildew caused by fungal pathogen Blumeria graminis f.sp. tritici is a destructive wheat disease, occurring in regions with cool and humid climates. In order to investigate the changes in pathogenicity of the disease and to identify the effective genetic source of resistance, a total of 29 wheat genotypes with different resistance major genes (Pm) were studied in two hotspots of Go...

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Isolation of a Major Resistance Gene to Powdery Mildew

................................................ 2 Executive summary .................................................. 3 Background ................................................. 5 Project Aims & Performance targets .................................................. 6 Methods ................................................. 7 Results / Discussion ..............................................

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Association mapping for resistance to powdery mildew in oriental tobacco (Nicotiana tabaccum L.) germplasm

Powdery mildew caused by Erysiphe cichoracearum is an important fungal disease which threatens tobacco (Nicotiana tabacum L.) production. The objective of this study was to determine DNA markers linked to genomic regions associated with resistance to powdery mildew in tobacco through the association mapping approach. Seventy tobacco geno-types were fingerprinted using 26 simple se-quence repeat...

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An Arabidopsis mutant with enhanced resistance to powdery mildew.

We have identified an Arabidopsis mutant that displays enhanced disease resistance to the fungus Erysiphe cichoracearum, causal agent of powdery mildew. The edr1 mutant does not constitutively express the pathogenesis-related genes PR-1, BGL2, or PR-5 and thus differs from previously described disease-resistant mutants of Arabidopsis. E. cichoracearum conidia (asexual spores) germinated normall...

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ژورنال

عنوان ژورنال: Genetics and Molecular Biology

سال: 2002

ISSN: 1415-4757

DOI: 10.1590/s1415-47572002000300015