Soybean Rust Development and the Quantitative Relationship Between Rust Severity and Soybean Yield

Hartman, G. L.; Wang, T. C.; Tschanz, A. T.

doi:10.1094/pd-75-0596

Cited by 129 publications

(86 citation statements)

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“…Literature data shows that ASR epidemic rates are influenced by the stage of the soybean crop (Tschanz & Wang, 1985;Hartman et al, 1991). Hence, early maturing genotypes are as susceptible as late maturing ones when compared at the same stage of development and under similar inoculum pressure and environmental conditions.…”

Section: Resultsmentioning

confidence: 99%

Managing soybean rust with fungicides and varieties of the early/semi-early and intermediate maturity groups

Koga¹,

Canteri²,

Calvo

et al. 2014

Trop. plant pathol.

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The objectives of this study were to evaluate the influence of soybean cultivar of two maturity groups, early/semi-early (E) or intermediate (I), on the management of Asian soybean rust (ASR) with fungicides and yield. Field trials were conducted during the 2006/07 and 2007/08 growing seasons. Seven cultivars of the two groups were tested in the first season and eight in the second season. All cultivars had plots that were treated (T) or non-treated (NT) with a commercial mixture of pyraclostrobin + epoxiconazole. ASR severity (%) was visually assessed several times during the crop cycle and yield (kg ha -1 ) was determined at harvest. Values of the standardized area under the disease progress curve (AUDPC) calculated from the severity assessments was higher in 2007/08 than in 2006/07, but no differences were found between cultivars of the E and I maturity groups. Differences in yield between between T and NT plots were lower in cultivars of the E group than those of the I group in both the 2006/07 (37.6% and 52.8% respectively) and the 2007/08 season (56.9% and 85.0%, respectively). A higher stability in yield was found for cultivars of the E maturity group compared to those of the I group.

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Section: Resultsmentioning

confidence: 99%

Managing soybean rust with fungicides and varieties of the early/semi-early and intermediate maturity groups

Koga¹,

Canteri²,

Calvo

et al. 2014

Trop. plant pathol.

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“…Asian soybean rust (ASR) caused by Phakopsora pachyrhizi is the most destructive and over 80 per cent losses are common when environmental conditions are conducive to disease development (Hartman et al, 1991). The infected plants undergo defoliation and early maturation, which causes reduction in weight and quality of the seeds.…”

Section: Introductionmentioning

confidence: 99%

Effect of Foliar Application of Manganese and Potassium on Rust Susceptible and Resistant Soybean Genotypes

Akshatha¹,

Koti²

2018

Int.J.Curr.Microbiol.App.Sci

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“…Soybean yield losses up to 80 % in experimental trials have been reported in Asia (Hartman et al 1991) and 63 % have been reported in Brazil during 2003, 60 % in Paraguay during 2001 (Yorinori et al 2005), up to 100 % in South Africa (Caldwell and McLaren 2004), and up to 55 % in the USA (Mueller et al 2009). Because commercial soybean cultivars resistant to SBR are not available in the USA, fungicide applications are the only method currently available to control the disease.…”

Section: Introductionmentioning

confidence: 99%

Molecular mapping of soybean rust resistance in soybean accession PI 561356 and SNP haplotype analysis of the Rpp1 region in diverse germplasm

Kim

Unfried²,

Hyten

et al. 2012

Theor Appl Genet

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Soybean rust (SBR), caused by Phakopsora pachyrhizi Sydow, is one of the most economically important and destructive diseases of soybean [Glycine max (L.) Merr.] and the discovery of novel SBR resistance genes is needed because of virulence diversity in the pathogen. The objectives of this research were to map SBR resistance in plant introduction (PI) 561356 and to identify single nucleotide polymorphism (SNP) haplotypes within the region on soybean chromosome 18 where the SBR resistance gene Rpp1 maps. One-hundred F 2:3 lines derived from a cross between PI 561356 and the susceptible experimental line LD02-4485 were genotyped with genetic markers and phenotyped for resistance to P. pachyrhizi isolate ZM01-1. The segregation ratio of reddish brown versus tan lesion type in the population supported that resistance was controlled by a single dominant gene. The gene was mapped to a 1-cM region on soybean chromosome 18 corresponding to the same interval as Rpp1. A haplotype analysis of diverse germplasm across a 213-kb interval that included Rpp1 revealed 21 distinct haplotypes of which 4 were present among 5 SBR resistance sources that have a resistance gene in the Rpp1 region. Four major North American soybean ancestors belong to the same SNP haplotype as PI 561356 and seven belong to the same haplotype as PI 594538A, the Rpp1-b source. There were no North American soybean ancestors belonging to the SNP haplotypes found in PI 200492, the source of Rpp1, or PI 587886 and PI 587880A, additional sources with SBR resistance mapping to the Rpp1 region.

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Soybean Rust Development and the Quantitative Relationship Between Rust Severity and Soybean Yield

Cited by 129 publications

References 0 publications

Managing soybean rust with fungicides and varieties of the early/semi-early and intermediate maturity groups

Managing soybean rust with fungicides and varieties of the early/semi-early and intermediate maturity groups

Effect of Foliar Application of Manganese and Potassium on Rust Susceptible and Resistant Soybean Genotypes

Molecular mapping of soybean rust resistance in soybean accession PI 561356 and SNP haplotype analysis of the Rpp1 region in diverse germplasm

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