Thermotherapy in treating fennel seeds (Foeniculum vulgare Mill.): effects on health and physiological quality

Gama, Juliana Simões Nobre; Neto, Aderson Costa Araujo; Bruno, Riselane de Lucena Alcântara; Júnior, Lécio Resende Pereira; Medeiros, José George Ferreira

doi:10.1590/s1806-66902014000400023

Cited by 7 publications

(4 citation statements)

References 19 publications

(20 reference statements)

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“…These results differ from those reported by Lanna (2018) who did not observe reduction in the germination of zucchini seeds treated with dry thermotherapy at 70ºC for up to 96 h. Gama et al (2014) reported that fennel seeds did not lose quality when treated with dry thermotherapy at 70ºC for up to 15 days. However, the germination of cucumber seeds gradually decreased the longer the treatment time with dry thermotherapy at 70ºC (Shi et al, 2016).…”

Section: Resultscontrasting

confidence: 99%

Control of Alternaria brassicicola with thermotherapy and propolis and effect on the physiological quality of kale seeds

et al. 2020

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In the organic production system, the use of agrochemicals for seed treatment is prohibited. This study was carried out to evaluate the effect of heat treatment and propolis on the germination and vigor of kale seeds and the effect on the control of Alternaria brassicicola. In the treatment with wet thermotherapy, three temperatures (50, 55 and 60°C) were evaluated in separated experiments. For each temperature, five immersion times [0 (control), 15, 30, 45 and 60 minutes] were evaluated. In the dry thermotherapy treatment, seeds were submitted to constant 70ºC temperature and five times [0 (control), 24, 48, 72 and 96 hours] were evaluated. In the treatment with propolis, six concentrations (0.0, 0.2, 0.4, 0.6, 0.8 and 1.0%) were studied, with subsequent washing or not washing of the seeds. Then, seeds were inoculated with A. brassicicola and submitted to the following treatments: wet thermotherapy at 50°C for 60 minutes and at 55°C for 15 minutes and propolis at 1.0% with and without further washing. Two control treatments were included in the experiment (inoculated untreated seeds; and not inoculated and untreated seeds), totalizing six treatments. After inoculation and treatments, the incidence of the fungus on the seeds was evaluated and the effect on the physiological quality of the seeds. Both thermotherapy treatments (50°C for 60 minutes and 55°C for 15 minutes) reduced the pathogen incidence significantly. Both propolis treatments at 1% (with and without subsequent washing) did not provide a satisfactory reduction on A. brassicicola incidence in kale seeds. Thermotherapy at 55°C for 15 minutes is the best option for A. brassicicola control in kale seeds, because it does not affect seed physiological quality.

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Section: Resultscontrasting

confidence: 99%

Control of Alternaria brassicicola with thermotherapy and propolis and effect on the physiological quality of kale seeds

et al. 2020

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“…High incidence of pathogen levels can reduce the viability of seeds or even promote their death even before germination (Mallmann et al, 2013). Some studies have shown that heat treatments can be an alternative for the control of pathogens (Muniz, 2001;Oliveira et al, 2011;Gama et al, 2014). However, this treatment is a measure that causes physiological and biochemical changes in the seeds at different intensities and may compromise their performance (Coutinho et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Heat treatment to overcome seeds dormancy of Panicum maximum cultivars (Poaceae)

Dutra¹,

Rodrigues²,

Pereira³

et al. 2015

Afr. J. Agric. Res.

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The guinea grass Panicum maximum, an African grass, is one of the main forage grasses in tropical America. Its propagation is mainly carried out by seeds, but seed dormancy hampers good pasture establishment. The aim of this study was to evaluate the use of heat treatment to overcome seed dormancy of P. maximum cultivars Milênio, Tanzânia and Mombaça. Seeds of each cultivar have been subjected to heat treatments at temperatures of 50, 60 and 70°C with exposure time for 5, 10 and 15 h. Afterwards, they were placed in germination test. The data were subjected to analysis of variance and, when significant, polynomial regression was performed, with up to 5% of probability. The variables analyzed were germination percentage, germination speed index (GSI) and average germination time (AGT). P. maximum seeds of different cultivars showed distinct responses to heat treatment. The cultivar Tanzânia responds positively to different combinations of temperature and periods of seeds exposure, and the treatment at 70°C for about 8 h is recommended to overcome dormancy with better germination performance. For cultivar Milênio, it is recommended the exposure of seeds at 70°C for 15 h. Cultivar Mombaça is negatively influenced by the heat treatment, so this treatment is not recommended.

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“…ISSN 2166-0379 2019 The physical treatments of seeds using different sources of heat helped in physiological potential expression of seeds with average of 81 and 78% for germination and, of 85 and 81% of emergence of seedlings in the field, for the treatments of thermotherapy via humid heat (PTH) and dry heat (PTD), respectively. Braga et al (2010) and Gama et al (2014) pointed that the use of thermotherapic methods are viable for the treatment of tomato seeds (Solanum lycopersicum L.) and fennel (Foeniculum vulgare Mill. ), respectively and, with low environmental impact, offering an alternative to the use of chemical products.…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

Physiological and Sanitary Quality of Safflower Seeds Under Different Seed Treatments

Menegaes

Nunes

Bertagnolli

et al. 2019

JAS

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Safflower (Carthamus tinctorius L.) presents a high susceptibility for the attack of pathogens, resulting in low productivity of seeds. Thus, we aimed to evaluate the physiological and sanitary quality of safflower seeds submitted to different treatments. The experiment was conducted in the Floricultural Sector and in the Didactic and Seed Research Laboratory, in completely randomized design, with 4x9 (lots of seeds and treatment of seeds), with four repetitions. The lots of seeds were cultivated in the crop 2017/2018, the sowing occurred in the first fortnight of each season of the year (autumn, winter, spring and summer). After collected, the lots were stored in cold chamber with average degree of humidity of 9.0%. The treatments of seeds were constituted by: control, thermotherapy via humid heat, thermotherapy via dry heat, Trichoderma harzianum, chemical fungicide with active ingredients of Carbendazim+Thiram, Metalaxyl-M+Fludioxonil and Carboxin+Thiram, vegetal extracts of Dendranthema grandiflora and of Melia azedaeach. We evaluated the seeds treated by the standard test of germination, length and mass of seedlings, emergence and sanity. We observed that all the tested treatments benefit the safflower culture, promoting improvement in its germination, with efficient establishment of seedlings in the field. At the same time that was carried out the infestation control of the pathogens on the same, among the treatments we highlight the chemical fungicide with active ingredient Carbendazim+Thiram.

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Thermotherapy in treating fennel seeds (Foeniculum vulgare Mill.): effects on health and physiological quality

Cited by 7 publications

References 19 publications

Control of Alternaria brassicicola with thermotherapy and propolis and effect on the physiological quality of kale seeds

Control of Alternaria brassicicola with thermotherapy and propolis and effect on the physiological quality of kale seeds

Heat treatment to overcome seeds dormancy of Panicum maximum cultivars (Poaceae)

Physiological and Sanitary Quality of Safflower Seeds Under Different Seed Treatments

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