Fitopatologia Brasileira (2005) 30, 279-285

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Fernando C. Juliatti, Simone A. Moraes, Heyder D. Silva and Márcio H.C. Borges (2005)
Seleção de progênies de feijoeiro F4 resistentes ao Bean golden mosaic virus
[Selection of common bean F4 progenies for resistance to Bean golden mosaic virus resistance]
Fitopatologia Brasileira 30 (3), 279-285
Abstract: The objective of this investigation was to select Bean golden mosaic virus (BGMV) resistant 480 F4 progenies in full dialelle crosses under field conditions. The BGMV disease index calculation (ID) was obtained at the level of individual plants. The common bean (Phaseolus vulgaris) cultivar Carioca-MG was the susceptible parent, and IAPAR-57, IAPAR-72 and IAPAR-65 were the resistant parent cultivars. The F4 progenies presented a higher degree of resistance than parental genotypes (2.62 vs. 2.87), and also greater variability. Genetic variance (0.2729) was significantly different from zero (P<0,01) with a broad heritability estimate of ha2 = 0.3953. According to the estimated selection gain (GS%), we can improve resistance to BGMV with a small number of progenies. The population originating from the IAPAR 72 parent presented progenies with higher resistance. The resistance mechanism is possibly of the partial resistance type.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Database assignments for author(s): Fernando Cesar Juliatti

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Bean golden mosaic virus Beans (Phaseolus) Brazil (south)