Study on Prevalence of Mycoflora in Wheat Seeds

Adhikari, Pratishtha; Khatri-Chhetri, G. B.; Shrestha, Sundar Man; Marahatta, Santosh

doi:10.24925/turjaf.v4i1.31-35.509

Cited by 8 publications

(7 citation statements)

References 9 publications

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“…The occurrence of Alternaria spp. reached 78%, which is similar to the results reported in different regions by many researchers [2,[11][12][13][14]. The fungi from the genus Alternaria are common members of the mycobiota of wheat grain, but the importance of this fungal group depends on various conditions and the species of pathogens.…”

Section: Discussionsupporting

confidence: 80%

What influences the composition of fungi in wheat grains?

et al. 2017

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Wheat grains are inhabited by different fungi, including plant pathogens and fungi -mycotoxin producers. The composition of seed mycobiota can be influenced by different factors, including agronomic practices, but the results are still contradictory. The aim of this study was to evaluate the mycobiota of wheat grains depending on agroecological conditions. Wheat grains were obtained from a two-factorial field trial: A -tillage system (A1 -ploughing at a depth of 22-24 cm; A2 -harrowing at a depth of up to 10 cm); B -crop rotation (B1 -continuous wheat; B2 -oilseed rape and wheat; B3 -crop rotation). The mycobiota of grain were determined by mycological and molecular methods. The most abundant and widespread of the mycobiota were Pyrenophora tritici-repentis, Alternaria spp., Arthrinium spp., and Fusarium avenaceum. Higher amounts of precipitation increased the infection of grains with Fusarium fungi. Seven species of Fusarium were identified in the grain samples: F. avenaceum, F. poae, F. graminearum, F. culmorum, F. acuminatum, F. sporotrichioides, and F. tricinctum. The soil tillage method and crop rotation did not influence the total incidence of Fusarium spp., but the abundance of a particular species differed depending on agronomic practice. The research suggests that continuous wheat sowing under conditions of reduced soil tillage can increase the level of risk of grain infection with F. graminearum and, consequently, the accumulation of mycotoxins.

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Section: Discussionsupporting

confidence: 80%

What influences the composition of fungi in wheat grains?

et al. 2017

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“…Likewise, Hashem (1990) reported the presence of A. niger, A. flavus and B. australiensis on barley seeds in Saudi Arabia. Likewise the fungal species isolated in this study, A. niger, A. flavus, Bipolaris and Rhizopus stolonifera have been recovered from Triticum aestivum seeds (wheat) (Adhikari et al, 2016). Moreover, all isolated fungal species, except B. australiensis, reported in this study were also found on barley grains in Pakistan (Fakhrunnisa, and Ghaffar, 2006).…”

Section: Discussionsupporting

confidence: 68%

Mycoflora Associated with Barely Grains (Hordeum vulgare L.) in the Eastern Parts of Libya

Abdullah

2022

SJFSSU

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During the harvest season (2019-2020), local variety of barley seeds (Hordeum vulgare L.) were collected from three different locations, Almerj, Gerdina, and Sultan; situated in the eastern part of Libya. The present experiment was performed to identify, and compare natural mycoflora associated with barley seeds among these locations, also to evaluate sodium hypochlorite’s application, as seed disinfectants against fungal contaminators. Barley seeds were surface disinfected with a 4% sodium hypochlorite for two minutes or washed only with deionized water (control) before plating on potato dextrose agar (PDA) medium. The following parameters were recorded and calculated: seed survival (G %), fungal frequency (F), isolation frequency (IF) and fungal relative abundance (RD). Four fungal species were identified as Aspergillus niger van Tiegh, A. flavus Link (ascomycetes), Rhizopus stolonifera (Ehrenb. :Fr.) Vuill (zygomycetes), and Bipolaris australiensis (Bugnicourt) (ascomycetes). The most predominant recovered species was A. niger followed by B. australiensis, R. stolonifera, and A. flavus, (18.5%), (9.67%) (2.84%), (4.65%), respectively. Results also showed Sultan had the highest seed germination, followed by Almerj and Gerdina, 64.5 %, 44.5%, and 20.5 %, respectively. Moreover, seed’s pretreatment with sodium hypochlorite and seed’s origin had no significant effect on frequency and relative abundance of fungi.

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“…The representativeness of fungus species was determined by the variety and the location of its cultivation. Alternaria alternata and Bipolaris sorokiniana dominated in all research variants (Adhikari et al, 2016;Adhikari et al, 2018). Twenty-one genera/species were found in Latvia during the period 56 Ukrainian Journal of Ecology, 11(1), 2021 of investigation 2012-2016.…”

Section: Introductionmentioning

confidence: 97%

Pre-sowing treatment of winter wheat and spring barley seeds with the extremely high frequencies electromagnetic field

Bezpalko¹,

Stankevych²,

Matsyura³

2021

Ukr J Ecol

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The increase in the yield capacity of cereal spike crops under the current change of the climatic conditions in Ukraine will have a positive tendency in the nearest future. However, sustainable grain production under sharp weather fluctuations is possible only with the agro-technological systems' improvement. The pre-sowing seed treatment with chemical synthesis pesticides remains the primary method in the agricultural industry today. However, pesticides inevitably have a negative influence on the ecosystem of any level. A more environmentally friendly seed treatment method under the intensive technology is the combination of microwave seed irradiation and seed incrustation with the plant growth regulators that increase the cereal crops' yield capacity up to 15–20 %. It is possible to reduce the negative influence of chemical measures on the quality of the cereal crops seeds by using for the seed treatment a mixture of a treatment agent with the preparations having the stimulating properties. The most promising among all physical methods of the pre-sowing seed treatment is the microwave technology, which suppresses the entire complex of the seed infection and can become an alternative to the chemical method of plant protection. The universal character and practical importance of MW technologies combined with the growth-regulating substances consist not only in the increase in the yield capacity of the field crops but also in reducing the technogenic load on the environment. The peculiarity of EMF of EHF application in agricultural production is the necessity to consider the crops' specific electro-physical, technological, and biological properties. High heterogeneity greatly influences the electromagnetic action energy and the final result.

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Study on Prevalence of Mycoflora in Wheat Seeds

Cited by 8 publications

References 9 publications

What influences the composition of fungi in wheat grains?

What influences the composition of fungi in wheat grains?

Mycoflora Associated with Barely Grains (Hordeum vulgare L.) in the Eastern Parts of Libya

Pre-sowing treatment of winter wheat and spring barley seeds with the extremely high frequencies electromagnetic field

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