Effect of Partial Resistance on Phytophthora Stem Rot Incidence and Yield of Soybean in Ohio

Plant Disease
Anne E DorranceSteven K St Martin

Abstract

Phytophthora root and stem rot of soybean commonly causes losses in both stand and yield in Ohio. Environmental conditions which favor the pathogen typically occur in many areas of the state during late spring and summer. This study examined the performance of 12 soybean cultivars with partial resistance, with or without Rps genes, to different populations of Phytophthora sojae and various levels of disease pressure. The soybean cultivars were evaluated in seven field environments with and without metalaxyl over 4 years. There was a highly significant genotype-environment interaction which was due in part to variable disease pressure. The incidence of Phytophthora stem rot in subplots ranged from 0 to 10 plants in the most susceptible cultivar, Sloan, while significantly less stem rot developed in cultivars with high levels of partial resistance or partial resistance combined with an Rps gene in three of the seven environments. Metalaxyl applied in-furrow had a significant effect on early and final plant populations as well as yield (P < 0.001) in two of the seven environments, and for yield (P = 0.05) in one environment. This indicates that at these two environments, 2001 Lakeview and VanBuren, early season Phytophthora diseas...Continue Reading

References

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Citations

Mar 2, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yanbo ChengHai Nian
Apr 15, 2010·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Xiuping LiWenbin Li
Jan 29, 2013·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Sungwoo LeeAnne E Dorrance
Jan 15, 2014·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jutao SunNa Guo
Sep 9, 2018·The Plant Journal : for Cell and Molecular Biology·Arjun SukumaranSangeeta Dhaubhadel
Dec 6, 2018·Anais Da Academia Brasileira De Ciências·Tássia B DE OliveiraClara B Hoffmann-Campo
Oct 24, 2008·Phytopathology·Kosala RanathungeMark A Bernards
Nov 16, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Chao ZhongZhendong Zhu
Jul 1, 2016·Plant Disease·A E DorranceV C Concibido
Mar 8, 2013·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jiqing ZhangZhendong Zhu
Apr 25, 2019·International Journal of Molecular Sciences·Chao ZhongZhendong Zhu
Mar 16, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Feng LinDechun Wang
Apr 2, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jun-Ichi MatsuokaHajime Akamatsu

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