Incidence of Fungi in Mombasa Grass Seeds During the Stages of the Seed Conditioning Process

Silva, Givanildo Zildo da; Martins, Cibele Chalita; Melo, Lilian Faria de; Jeromini, Tatiane Sanches; Panizzi, Rita de Cássia

doi:10.1590/1809-4430-eng.agric.v39n2p234-239/2019

Cited by 4 publications

(6 citation statements)

References 12 publications

(23 reference statements)

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“…Among the accessions of P. notatum, it was observed that the PN 04 access was more susceptible than the PN 01 access, presenting a greater number of species of fungi. Some important and potentially pathogenic fungi have been detected in the seeds of Panincum maximum and Brachiaria spp., such as Curvularia, Phoma, Fusarium, Exserohilum, Cercospora, Fusarium, Cladosporium and Helminthosporium (Mallmann et al, 2013;Marcos et al, 2015;Silva at al., 2019). The species of phytopathogenic fungi most frequent in seed lots of Paspalum guenoarum ecotype "Azulão" were Bipolaris micropus, Curvularia geniculata, Fusarium incarnatum and Phoma herbarum (Gasparetto et al 2017).…”

Section: Resultsmentioning

confidence: 99%

Sanitary quality of seed of Paspalum species

et al. 2020

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Brazil has been developing research for selection of native species of Paspalum for use as turfgrass, nevertheless little is known about the sanitary quality and pathogens associated to the seeds, being the aims of this study. Subsamples of 100 seeds of two accessions of Paspalum notatum Flügge (PN 01 and PN 04) and one accesses of Paspalum lepton Schult. (PL 01) were submitted to the blotter test at 20 °C with a 12-h photoperiod for 7 days. The Penicillium and Curvularia genus incidence were highest in the three accessions of Paspalum. The seed health quality was variable between accessions, with more than 56% of incidence of the fungus Curvularia on the seeds. This study reported for the first time the occurrence of Curvularia spp. and Cladosporium herbarium in seeds of P. lepton, in the Northeast region of Brazil.

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Section: Resultsmentioning

confidence: 99%

Sanitary quality of seed of Paspalum species

et al. 2020

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“…La vida postcosecha de los productos hortofrutícolas se ve frecuentemente limitada por pudrición causada por hongos (da Silva et al, 2019). Un caso específico se tiene en frutos como manzana (Heinmaa et al, 2019) y cítricos (Gandarilla-Pacheco et al, 2020) afectados por Penicillium spp., donde los hongos pueden limitar el consumo y la vida útil en postcosecha.…”

Section: Introductionunclassified

“…The postharvest life of horticultural products is frequently limited by rot due to fungal development (da Silva et al, 2019). A specific case is given by the affectation of fruits such as apple (Heinmaa et al, 2019) and citrus (Gandarilla-Pacheco et al, 2020) by Penicillium spp., which may limit consumption and shelf life.…”

Section: Introductionmentioning

confidence: 99%

Release kinetics modeling and fungal control potential of encapsulated thyme (Thymus vulgaris) essential oil

Muñoz-González

Sandoval-Castilla

Meléndez-Gómez

et al. 2022

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The essential oils have antifungal properties and their volatilization can be controlled through encapsulation. The work aimed at controlling the release kinetics of thyme (Thymus vulgaris) essential oil through ionic gelation encapsulation to assess the potential of inhibiting the development of Penicillium spp. Thyme essential oil was encapsulated with sodium alginate (NaAlg; 0.5 and 1.0%), calcium chloride (CaCl2; 0.8 and 2.5%), and different residence times in the calcium solution (10, 20, 40, and 60 min). Batches of capsules were placed in closed containers and volatilization was monitored. Release kinetics were evaluated through transient regime mass balances. Capsules had diameter and thickness between 2.16-2.81 and 0.20-0.46 mm, respectively. The best systems used AlgNa/CaCl2-1.0/0.8%, with residence in the calcium solution of 10 and 20 min, obtaining encapsulation efficiencies of 94.0 and 90.1%, respectively. Penicillium digitatum was inhibited through the controlled release of the essential oil.

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“…Seeds in the light fraction generally have low germination, comprised mainly of impurities and unfilled seeds, while seeds in the heavy fraction are filled and formed with an embryo (Shibata et al, 2016). The use of a seed blower has been proved successful separating filled and unfilled seeds of Elephantopus mollis (Felipe et al, 2019), Vernonanthura discolor (Grzybowski et al, 2019), Panicum maximum (Silva et al, 2019), and Eremanthus erythropappus (Feitosa et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Physiological quality of Moquiniastrum polymorphum seeds processed with a general seed blower

et al. 2022

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This study evaluates the physiological quality of Moquiniastrum polymorphum seeds, processed by a General seed blower, based on their germinability at different temperatures and on the imbibition curve, aiming to support future studies of M. polymorphum seeds processed by a General seed blower. Seeds were characterized regarding moisture, purity, germinability and thousand seed weight. The experiment was carried out in a completely randomized design (CRD). To characterize the triphasic process of germination, the imbibition curve during seed germination was modelled using 2 samples of seeds weighing 0.05 g. Physiological seed quality was assessed using a thermogradient table at 15, 20, 25, 30, 35 and 40 °C (with constant light supply) and by calculating the germination speed index (GSI), along with the time to reach 50% germination (T50) and uniformity of germination (U75-25). Each temperature treatment included 4 replications of 50 seeds each. It was found that the optimum temperature for germination was 30 °C with constant light supply, resulting in higher means of normal seedlings, GSI, T50 and U75-25. Moreover, the imbibition curve at 30 °C and constant light supply exhibited a triphasic pattern common to seed germination. In conclusion, the new findings on the germinative potential of M. polymorphum seeds processed by a General seed blower uncovered here can be applied in the methodology of future studies of M. polymorphum or used as recommendations for species of the same genus

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Incidence of Fungi in Mombasa Grass Seeds During the Stages of the Seed Conditioning Process

Cited by 4 publications

References 12 publications

Sanitary quality of seed of Paspalum species

Sanitary quality of seed of Paspalum species

Release kinetics modeling and fungal control potential of encapsulated thyme (Thymus vulgaris) essential oil

Physiological quality of Moquiniastrum polymorphum seeds processed with a general seed blower

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