Resistance to Fusarium wilt in common bean

In breeding programs, understanding the potential of parents should be a way to spend significantly less time and costs to obtain new cultivars. For this, the objective of this study was to estimate the general and specific combining ability of parents aiming common bean breeding for resistance to F...

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Published in:Crop breeding and applied biotechnology 2016-09, Vol.16 (3), p.226-233
Main Authors: Batista, Renata Oliveira, Oliveira, Ana Maria Cruz e, Silva, Johnn Lennon Oliveira, Nicoli, Alessandro, Carneiro, Pedro Crescêncio Sousa, Carneiro, José Eustáquio de Sousa, Paula Júnior, Trazilbo José de, Queiroz, Marisa Vieira de
Format: Article
Language:English
Subjects:
AGRONOMY
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
breeding for resistance
Combining ability
Crop yield
Cultivars
Fusarium
Fusarium oxysporum f. sp. phaseoli
Genes
Genetic control
Genotype & phenotype
Genotypes
Grain
Hybrids
Inbreeding
Mating
Parents
Plant breeding
Plant diseases
Plant growth
Weight reduction
Wilt
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Summary:In breeding programs, understanding the potential of parents should be a way to spend significantly less time and costs to obtain new cultivars. For this, the objective of this study was to estimate the general and specific combining ability of parents aiming common bean breeding for resistance to Fusarium wilt (FW) based on disease severity and reduction in plant growth. Eight common bean genotypes were crossed in a 3 x 5 partial diallel mating scheme to obtain F1 hybrids. The parents and their 15 F1 hybrids were evaluated for severity of Fusarium wilt, area under the disease progress curve, percentage of plant height reduction and plant shoot fresh weight reduction and grain yield. The resistance of common bean to FW is controlled by a few dominant genes. The reduction in plant growth is controlled by a different set of genes that can increase the selection efficiency of parents for common bean breeding.
ISSN:1984-7033
1518-7853
1984-7033
DOI:10.1590/1984-70332016v16n3a34