Soybean disease loss estimates for the top ten soybean-producing counries in 1998

Wrather, J. A.; Anderson, Terry; Arsyad, Darman M.; Tan, Yanli; Ploper, Leonardo Daniel; Porta-Puglia, A.; Ram, Hari; Yorinori, J. T.

doi:10.1080/07060660109506918

Cited by 265 publications

(157 citation statements)

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“…It has a broad host range and is capable of attacking and infecting more than 500 cultivated and wild plant species throughout the world (Khan 2007;Radwan et al 2014). The fungus has been reported worldwide, but it is economically more important in subtropical and tropical countries with a semi-arid climate (Wrather et al 2001;Purkayastha et al 2006).This pathogen has often been detected causing outbreaks in warm and hot areas under dry weather conditions. In Brazil, this pathogen is consistently isolated from roots and stems of melons (Andrade et al 2005;Dantas et al 2013) and associated weeds (Sales Jr et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Screening a variable germplasm collection of Cucumis melo L. for seedling resistance to Macrophomina phaseolina

et al. 2015

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reported to be useful for predicting shoot resistance, were performed, and plants were scored using a scale of disease severity. The average disease severity was calculated for each accession and was used to cluster the accession in five reaction classes. The screening revealed that sources of natural resistance to this fungus are limited. However, seedlings of seven accessions of different botanic groups displayed a resistant response to the stem inoculation, one cantaloup from Israel, one conomon accession from Korea, two wild agrestis and one acidulus from Africa, and two dudaim accessions from Middle East. The response of the F1 progenies varied from susceptibility to high resistance, the latter in progenies from the two agrestis wild types. These results suggest differences in the genetic basis of the resistance in the different selected sources. The resistant accessions are suggested to be screened under field conditions to confirm the level of resistance at adult plant stage and under stressful conditions.

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Section: Introductionmentioning

confidence: 99%

Screening a variable germplasm collection of Cucumis melo L. for seedling resistance to Macrophomina phaseolina

et al. 2015

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“…], worldwide were the root rot and leaf scorch called Sudden Death Syndrome (SDS; Wrather et al 1996;. Over a five year period 1999-2004 average losses around 1% or 0.9 million Mg per harvest, worth $190 million a year, were reported.…”

Section: Introductionmentioning

confidence: 99%

Separate loci underlie resistance to root infection and leaf scorch during soybean sudden death syndrome

et al. 2008

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“…son las responsables del 10% al 15% de las pérdidas ocasionadas en la producción de esta oleaginosa (32). Las principales enfermedades de la raíz y de la base del tallo son producidas por un complejo de microorganismos del suelo.…”

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Relación entre el gen Rps 1k y la resistencia a Pythium ultimum y P. irregulare en soja

Grijalba¹,

Ridao

Steciow³

et al. 2017

Summa phytopathol.

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En el cultivo de soja Pythium spp. produce la pudrición de semillas y raíces, y "damping off". El objetivo del presente trabajo fue verificar la relación entre el gen Rps 1k de resistencia a Phytophthora sojae y P. ultimum y P. irregulare. Cuatro genotipos de soja, dos con el gen Rps 1k (SE+1y SE+2) y dos sin el gen (SE-1 y SE-2) se sembraron en suelo inoculado y sin inocular. Los genotipos SE-1 y SE-2 no difirieron entre sí, ya sea que estuviesen inoculados o no, ni tampoco difirieron del SE+2. En cambio, los genotipos Grijalba, P.E.; Ridao, A. C.; Steciow, M.; López, M.V.. Relación entre el gen Rps 1k y la resistencia a Pythium ultimum y P. irregulare en soja Summa Phytopathologica, v.43, n.2, p.94-97, 2017. Palabras claves:Oomycetes; Damping off; Glycine max; Phytophthora sojae RESUMEN con el gen Rps1k difirieron entre sí, tanto los que estuvieron inoculados como los no inoculados. SE+2 presentó un 95% de emergencia mientras que SE+1 presentó un 78.35% de emergencia pero en ambos casos la emergencia disminuyó cuando se inoculó, con 63.35% y 34.15% respectivamente. Bajo las condiciones del presente ensayo las variedades utilizadas conteniendo el gen Rps 1k a Ph. sojae no presentaron mayor número de plántulas emergidas frente a las cepas probadas de P. ultimum ni de P. irregulare. ABSTRACTIn soybean Pythium spp. produces seed and root rot and "damping off". The aim of this study was to verify the relationship between resistant gene Rps 1k to Phytophthora sojae with Pythium ultimum and P. irregulare. Four genotypes of soybean were sown on inoculated soil, two of them with gene Rps 1k and the other two without it. Genotypes without the gene did not differ among themselves, no matter whether they were inoculated or not. On the other Grijalba, P.E.; Ridao, A. C.; Steciow, M.; López, M.V.. Relationship between Rps 1k gene and resistance to Pythium ultimum and P. irregulare in soybean. Summa Phytopathologica, v.43, n.2, p.94-97, 2017. hand, Rps1k genotypes differed from each other, whether or not they were inoculated. SE+2 presented 95% of emergence whereas SE+1 presented 78.35% of emergence, but in both cases the emergence decreased when genotypes were inoculated with 63.35% and 34.15% respectively. Under the assayed conditions the gene Rps1k resistant to Ph. sojae did not show a greater number of emerged seedlings against the tested strains of P. ultimum or P. irregulare. Keywords: Oomycetes; Damping off; Glycine max ; Phytophthora sojaeEm soja Pythium spp. causa apodrecimento de sementes, da raiz e "tombamento". O objetivo deste estudo foi verificar a relação do gene de resistência Rps 1k de Phytophthora sojae com Pythium ultimum e P. irregulare. Quatro genótipos de soja foram semeados em solo inoculado ou não com Pythium spp, dois deles com o gene Rps 1k (SE+1 e SE+2) e os outros dois sem ele (SE-1 e SE-2). Os genótipos SE-1 e SE-2 não diferiram entre si, não importa se eles foram inoculados ou não, nem eram diferentes de SE + 2. Por Grijalba, P.; Ridao, A. C.; Steciow, M.; López, M.V.. Relação entre gene e re...

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Soybean disease loss estimates for the top ten soybean-producing counries in 1998

Cited by 265 publications

References 2 publications

Screening a variable germplasm collection of Cucumis melo L. for seedling resistance to Macrophomina phaseolina

Screening a variable germplasm collection of Cucumis melo L. for seedling resistance to Macrophomina phaseolina

Separate loci underlie resistance to root infection and leaf scorch during soybean sudden death syndrome

Relación entre el gen Rps 1k y la resistencia a Pythium ultimum y P. irregulare en soja

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