Resistance to common bacterial blight in phaseolus vulgaris L. recombinant inbred lines under natural infection of Xanthomonas axonopodis pv. phaseoli

Among the main causes of poor yield in common beans are fungal, viral and bacterial diseases. Common bacterial blight, caused by Xanthomonas axonopodis pv. phaseoli (Xap), is one of the major bacterial diseases leading to significant losses in Brazil. Chemical control is ineffective, therefore, the...

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Bibliographic Details
Published in:Euphytica 2003-01, Vol.134 (1), p.43-46
Main Authors: FERREIRA, Claudia Fortes, PEREIRA, Messias Gonzaga, DA SILVA DOS SANTOS, Amaury, RODRIGUES, Rosana, BRESSAN-SMITH, Ricardo Enrique, PIOVIANA, Alexandre, DAHER, Rogério Figueiredo
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Bacteria
Bacterial diseases
Beans
Biological and medical sciences
Blight
Chemical control
Classical genetics, quantitative genetics, hybrids
Disease resistance
Fundamental and applied biological sciences. Psychology
Genetics
Genetics and breeding of economic plants
Genetics of eukaryotes. Biological and molecular evolution
Genotypes
Heritability
Inbreeding
Infections
Mathematical analysis
Parameters
Pathogens
Pest resistance
Phaseolus vulgaris
Plant breeding
Plant pathogens
Pteridophyta, spermatophyta
Varietal selection. Specialized plant breeding, plant breeding aims
Vegetals
Xanthomonas axonopodis
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Summary:Among the main causes of poor yield in common beans are fungal, viral and bacterial diseases. Common bacterial blight, caused by Xanthomonas axonopodis pv. phaseoli (Xap), is one of the major bacterial diseases leading to significant losses in Brazil. Chemical control is ineffective, therefore, the use of resistant varieties becomes an interesting alternative. The objective of the present work was to evaluate disease resistance under natural infection of the pathogen in 109 recombinant inbred lines (F7) of P. vulgaris originated from the cross HAB-52 (susceptible — snapbean) × BAC-6 (resistant — common bean) in two different environments, as well as to calculate genetic parameters to assist in the selection of promising materials to be used in the CBB resistance breeding program. The data of the genetic parameters were compared to those calculated for the F3 generation originated from the same cross. The heritability results for DI (disease index) and VI (variation index) in F3 were 26.85% and 0.26, respectively, whereas in F7 they were 91.77% and 1.36, respectively. These results demonstrate a potential to be explored for this advanced population, that in the future, along with other pathogen variability studies and tests in other environments, may provide more information regarding a more precise evaluation of promising genotypes to be used in common bean breeding programs aiming to obtain CBB resistant varieties.
ISSN:0014-2336
1573-5060
DOI:10.1023/A:1026131626592