Adult Plant Evaluation of Soybean Accessions for Resistance to Phakopsora pachyrhizi in the Field and Greenhouse in Paraguay

Plant Disease
M R MilesG L Hartman

Abstract

Five hundred thirty soybean accessions from maturity groups (MG) III through IX were evaluated for resistance to Phakopsora pachyrhizi in a replicated field trial at Centro Regional de Investigación Agrícola in Capitán Miranda, Itapúa, Paraguay during the 2005-06 season. Soybean rust severities of individual accessions ranged from 0% (resistant) to 30.0% (susceptible). In MG III and IV, the most resistant accessions were PI 506863, PI 567341, and PI 567351B, with severities less than 1.2%. In MG V, the most resistant accessions were PI 181456, PI 398288, PI 404134B, and PI 507305, with severities less than 0.3%. In MG VI, the most resistant accessions were PI 587886, PI 587880A, and PI 587880B, with severities less than 0.3%. In MG VII and VIII, the most resistant were PI 587905 and PI 605779E, with severities less than 1.0%. In MG IX, the most resistant accessions were PI 594754, PI 605833, PI 576102B, and PI 567104B, with severities less than 1.0%. The resistance in 10 selected accessions from MG VI, VII, VIII, and XI was confirmed in subsequent greenhouse and field experiments where severities of 0.4% or less and reddish-brown lesions with sporulation levels less than 3.0 were observed. These accessions, with low severities ...Continue Reading

References

Jun 1, 2005·Plant Disease·Glen L HartmanReid D Frederick

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Citations

Oct 6, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Silas P ChildsZenglu Li
Mar 1, 2012·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Shuxian LiReid D Frederick
Apr 28, 2009·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jeffery D RayMonte R Miles
Nov 11, 2009·Phytopathology·Anatoliy V LyginVera V Lozovaya
Mar 10, 2016·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Min LiuSilvia R Cianzio

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