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Rust effect estimation in soybean crosses for tolerance to Asian rust

التفاصيل البيبلوغرافية
العنوان: Rust effect estimation in soybean crosses for tolerance to Asian rust
المؤلفون: Fernanda Aparecida Castro Pereira, Natal Antonio Vello, Gabriela Antônia de Freitas Rocha, Claudinei Antonio Didoné
المصدر: Ciência Rural, Vol 48, Iss 3 (2018)
بيانات النشر: Universidade Federal de Santa Maria, 2018.
سنة النشر: 2018
المجموعة: LCC:Agriculture
LCC:Agriculture (General)
مصطلحات موضوعية: Glycine max, Phakopsora pachyrhizi, dialelo parcial, teste t pareado, manejo da ferrugem com fungicidas, Agriculture, Agriculture (General), S1-972
الوصف: ABSTRACT: Asian soybean rust is an important disease that has deeply troubled farmers and researchers since it was first reported. The causal agent, biotrophic fungus Phakopsora pachyrhizi Sydow & P. Sydow, has found extremely favorable conditions for its dissemination in Brazil. The most characteristic symptom of infection appears in the leaves, initially on the adaxial leaf surface, as small angular points less than 1mm in diameter, together with gray-colored uredospores (spores). Management involves a set of practices that guarantee coexistence between the plant and the pathogen without significant damage to the crop. The objective of this research was to evaluate tolerance to Asian rust by estimating losses caused by natural infection in the field. Experiments with generation F4 (2014/15) plants were established in a randomized blocks design with four replicates, with two types of genotypes (crosses and parents) and two schemes for disease management using fungicides. For analysis of the data, a test was applied on two dependent samples to verify the significance of the estimate of the rust effect. With regard to grain yield and tolerance, the most outstanding crosses were 104 (USP14-01-20 × EMGOPA313) and 149 (USP93-05.552 × EMGOPA313). Crosses 147 (USP93-05552 × PI153.282) and 137 (USP70.108 × PI153.282) were graded as tolerant in the evaluation of both yield reduction and seed size. We found evidence of tolerance to Asian rust in both crosses and parents. The statistical test revealed the significance of the rust effect estimates in soybean.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
Portuguese
تدمد: 1678-4596
0103-8478
Relation: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000300152&lng=en&tlng=en; https://doaj.org/toc/1678-4596
DOI: 10.1590/0103-8478cr20170496
URL الوصول: https://doaj.org/article/d2990af684074639956c2eb7f8348a9c
رقم الأكسشن: edsdoj.2990af684074639956c2eb7f8348a9c
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:16784596
01038478
DOI:10.1590/0103-8478cr20170496