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QTLs for resistance to soybean cyst nematode, races 3, 9, and 14 in cultivar Ha...

The objective of this work was to identify major and minor-effect quantitative trait loci (QTL) for resistance to races 3, 9, and 14 of soybean cyst nematode (SCN) in Hartwig cultivar; to map new resistance QTLs for these races; and to check for the existence of epistatic interactions between QTLs. Cultivar Hartwig is an important resistance source to SCN. Recombinant inbred lines (RIL) obtained from a cross be...

Inheritance of resistance to soybean cyst nematode races 3 and 14 in soybean RI...

ABSTRACT - The objective of this work was to evaluate the soybean inheritance of resistance to cyst nematode races 3 and 14. The following populations where evaluated: one population of recombinant inbred lines (RILs) [Hartwig (resistant) x Y23 (susceptible line)] for races 3, 14 and 9; one population of families F2:3 [M-SOY 8001 (resistant) x MB/BR 46 – Conquista (susceptible)] for race 3; and one population o...

Validation of microsatellite markers for assisted selection of soybean resistan...

ABSTRACT - The objective of this work was to validate microsatellite markers associated with resistance to soybean cyst nematode (Heterodera glycines Ichinohe) races 3 and 14, in soybean (Glycine max L.) genotypes, for use in marker-assisted selection (MAS) programs. Microsatellites of soybean linkage groups A2, D2 and G were tested in two populations, and their selection efficiencies were determined. The popul...

Severity levels of angular leaf spot in common bean cultivars and elite lines.

In Brazil, among the most important economic disease of bean crop is the angular leaf spot incited by Pseudocercospora griseola (Sacc.) Crous and U. Braun. The objective of this study was to assess the reaction of various cultivars and elite lines bean to P. griseola isolates obtained by Balbi et al. (2009).

Proteomic analysis of soybean leaves in a compatible and an incompatible intera...

Asian soybean rust (ASR), which is incited by the fungus Phakopsora pachyrhizi, is considered one of the most aggressive diseases to the soybean culture. There are no commercial cultivars immune to the pathogen and the control measure currently used is the application of fungicides that harms the environment and increases production costs. For a better understanding of the host?s response to the pathogen at the...

Soybean rust resistance sources and inheritance in the common bean (Phaseolus v...

Soybean rust (SBR), caused by the fungus Phakopsora pachyrhizi, has been reported in common bean (Phaseolus vulgaris L.) cultivars and elite lines that were infected under controlled and natural field conditions in South Africa, the United States, Argentina, and Brazil. Although SBR is currently not a top priority problem for the common bean crop, many bean breeders are concerned about this disease because of t...

RAPD and SCAR markers linked to resistance gene to angular leaf spot in common ...

A mancha angular do feijoeiro comum (Phaseolus vulgaris), cujo agente causal é o fungo Phaeoisariopsis griseola, é uma das principais doenças desta cultura no Brasil, causando perdas de até 70% na produção de grãos.; Made available in DSpace on 2013-03-20T23:31:27Z (GMT). No. of bitstreams: 1 SartoratoFB.pdf: 931918 bytes, checksum: 8f13f1560f626ea2149ddc5250473d43 (MD5) Previous issue date: 2004-07-29

Use of markers as a tool to investigate the presence of disease resistance gene...

The objective of this study was to use previously identified RAPD markers as a tool to investigate the presence of disease resistance genes, as well as to identify pyramided genes from resistance sources to diseases such as anthracnose, angular leaf spot, rust and bean golden mosaic virus, that are present in the pedigree of lines tested in the bean regional elite trials coordinated by Embrapa Rice and Beans.; ...

Variation in genetic and environmental effects of beta-conglycinin (7S) and gly...

Breeding for common bean (Phaseolus vulgaris L.) rust resistance in Brazil.

Common bean is an economically, nutritionally, and socially important crop. It is grown in distinct regions and different seasons around the world by subsistence level farmers with low-technology input as well as by farmers that use high input technologies. One important factor that can limit the bean growing and drastically affect grain yields is the high number of destructive pathogens that attack and cause s...