Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Abstract

Physiological and health quality of peanut seeds during the production processAbstract -The objective of this work was to evaluate the effect of production process stages on the physiological and health quality of peanut seeds. A completely randomized design with 12 treatments and four replicates was used. Treatments consisted of plant uprooting, plant gathering, transportation, drying, storage (two, four, and six months), and the following processing steps: mechanical threshing, classification by size, separation by density and color, and chemical treatment. Water content, health quality, germination, and vigor of seeds were evaluated after each treatment. Aspergillus spp. and Penicillium sp. were found in the seeds. In the first year, after mechanical threshing, seeds showed a reduced performance. In the production process, storage promoted the infection of 100% of the seeds by Aspergillus spp. The chemical treatment was effective in restoring seed health quality. Mechanical threshing steps and storage reduce the seed quality of peanut.

Image analysis and peanut seeds performance during the production process

“…Thus, processing cannot improve the physiological quality of peanut seeds, and at the end of process seeds without standard for commercialization are obtained. This finding was also observed for 'Tatu Vermelho' (Fessel & Barreto, 2000), 'Runner IAC 503' and 'Runner IAC 886' peanut seeds (Santos et al, 2013;Barbosa et al, 2014). However, the processing operations are indispensable for obtaining high quality seeds (Barbosa et al, 2014).…”

“…In the case of peanut seeds, it is common to obtain seeds with low physiological quality regardless the technology level used for production. Some peanut cropping characteristics support the production of seeds with low physiological quality: later maturation of seeds (Balota & Phipps, 2013), which leads harvest during the rainy season, and injures mechanized operations and natural drying or "cure" (Haro et al, 2008), indeterminate plant development (Branch et al, 2010), high contamination by pathogens (Barbosa et al, 2013a), besides problems during processing (Barbosa et al, 2014).…”

Quality of second season soybean submitted to drying and storage

“…as a second crop). In addition, the management of different post-harvest processes has also been studied, as it can directly affect grain quality and longevity (Albrecht et al 2009, Barbosa et al 2014.…”

Tratamento térmico úmido em sementes de Acacia mangium

“…que são potenciais causadores de infecções em sementes e plântulas de espécies florestais (Benetti et al, 2009;Lazarotto, et al, 2010;Maciel et al, 2012), assim como Aspergillus spp. que, apesar de não ser patogênico às plântulas, podem acelerar a deterioração das sementes durante o armazenamento de forma a reduzir a sua longevidade (Marchi et al 2011;Barbosa et al, 2014).…”