N.J.D. Vilela, A.C.H.F. Carvalho, A.T. Bruzi, F.C.L. Medeiros, A.G.S.G. Santiago, E.A. Pozza, T.T.T. Rocha, M.R. Piza
Published: March 12, 2024
Genet. Mol. Res. 23(1): GMR19230
DOI: https://doi.org/10.4238/gmr19230
Cite this Article:
N.J.D. Vilela, A.C.H.F. Carvalho, A.T. Bruzi, F.C.L. Medeiros, A.G.S.G. Santiago, E.A. Pozza, T.T.T. Rocha, M.R. Piza (2024). Multiline is a strategy for homeostasis and Asian Soybean Rust Management in Agriculture. Genet. Mol. Res. 23(1): GMR19230. https://doi.org/10.4238/gmr19230
About the Authors
N.J.D. Vilela, A.C.H.F. Carvalho, A.T. Bruzi, F.C.L. Medeiros, A.G.S.G. Santiago, E.A. Pozza, T.T.T. Rocha, M.R. Piza
Corresponding Author
Email: adrianobruzi@ufla.br
ABSTRACT
Two studies were undertaken with the aim of assessing the phenotypic stability and progression of ASR severity in soybean cultivars within a tropical altitude climate. In the first study, six commercial soybean cultivars containing the INOX and a multiline cultivar were evaluated in 24 environments during the 2017/18 and 2018/19 growing seasons, assessing yield and full maturity. Stability was assessed using the ecovalence and Annicchiarico confidence index methods. To evaluate ASR progress in the second study, plants were maintained in a greenhouse and inoculated with Phakopsora pachyrhizi uredospores. Disease severity, area under the disease progress curve, above-ground biomass, number of pods, number seeds, number of seeds per pod, 100-seed weight, total grain weight, and harvest index were assessed. The multiline cultivar exhibited yield performance statistically similar to the higher-yielding INOx; cultivars, including the cultivar TMG 7067 IPRO, with the highest stability and lowest risk. In terms of ASR progression severity, the multiline cultivar exhibited statistically superior performance compared to M6410 IPRO, demonstrating enhanced responses for the variables SEV, AUDPC, NBS/P, 100SW, TGW and HI. It can be concluded that the use of resistant cultivars and multiline is effective in reducing the severity of ASR. The employment of multiline is a valuable strategy for the management of Asian soybean rust.
Key words: Adaptability, Genotype; Environment interaction, Glycine max L, Phakopsora pachyrhizi, Severity, Yield.