Comparison of the response of seedlings of common buckwheat (Fagopyrum esculentum Moench) to glyphosate applied to the shoot or to the root zone

• Autorzy: Debski H. , Szwed M. , Koczkodaj D. , Klocek J. , Horbowicz M.

Warianty tytułu

PL

Porównanie odpowiedzi siewek gryki zwyczajnej (Fagopyrum esculentum Moench) na glifosat stosowany na pędy lub do strefy korzeniowej

• Języki publikacji: EN

Abstrakty

EN

We examined the response of common buckwheat (Fagopyrum esculentum Moench) seedlings, as a nontarget plant, to various doses of glyphosate applied to the root zone or to the shoots. Glyphosate was used at 0.1, 0.5, and 1.0 mM concentrations. The study was conducted on seedlings grown in hydroponic cultures under controlled growth conditions. Primary root and shoot growth, anthocyanin and photosynthetic pigment contents were measured to assess the effects of exposure to glyphosate. Glyphosate applied to shoots had a considerably higher impact on the growth of primary roots and shoots of seedlings. Low glyphosate concentrations produced an increase in anthocyanin content of hypocotyls, regardless of the mode of its application. Increasing the concentration of glyphosate applied to the root zone resulted in a gradual increase in anthocyanin content in cotyledons. Our overall results show that in hydroponically grown common buckwheat seedlings, glyphosate is less phytotoxic when applied to the root zone than when applied to the shoot. Low doses of glyphosate applied to the root zone stimulate root and shoot growth and increase the anthocyanin levels in cotyledons. The phytotoxicity of glyphosate was decreased in the absence of mineral nutrients in the root zone of buckwheat seedlings.

PL

Wykonano badania reakcji siewek gryki zwyczajnej (Fagopyrum esculentum Moench), na glifosat, związek chemiczny z grupy fosfonianów. Preparat zastosowano w stężeniach 0,1, 0,5 i 1,0 mM na organy nadziemne lub do strefy korzeniowej. Badania przeprowadzono na roślinach uprawia- nych hydroponicznie w kontrolowanych warunkach światła i temperatury. Aby ocenić wpływ ekspozycji na glifosat wykonano pomiary wzrostu korzenia głównego i części nadziemnych oraz zawartości antocyjanów i barwników fotosyntetycznych. Glifosat stosowany na organy nadziemne miał znacznie większy wpływ hamujący na wzrost tych organów i korzenia głównego siewek gryki, niż użyty dokorzeniowo. Niskie stężenie glifosatu (0,1 mM), niezależnie od trybu jego użycia, powodowało zwiększanie zawartości antocyjanów w hipokotylu siewek gryki zwyczajnej. Podwyższanie stężenia glifosatu w strefie korzeniowej powodowało stopniowy wzrost zawartości antocyjanów w liścieniach siewek. Uzyskane wyniki ukazują, że w uprawie hydroponicznej siewek gryki zwyczajnej glifosat jest mniej fitotoksyczny po użyciu do strefy korzenia, niż po zastosowaniu na organy nadziemne. Niskie dawki glifosatu (0,1 mM) w strefie korzeniowej stymulowały wzrost korzenia głównego i części nadziemnych siewek oraz zwiększały poziom antocyjanów w liścieniach. Fitotoksyczność glifosatu ulegała obniżeniu przy braku składników mineralnych w pożywce.

• Wydawca: -
• Czasopismo: Acta Agrobotanica
• Rocznik: 2018
• Tom: 71
• Numer: 1
• Opis fizyczny: Article: 1730 [9 p.], fig.,ref.

Twórcy

autor

Debski H.

• Department of Biology, Chair of Botany and Plant Physiology, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110 Siedlce, Poland

autor

Szwed M.

• Department of Biology, Chair of Botany and Plant Physiology, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110 Siedlce, Poland

autor

Koczkodaj D.

• Department of Biology, Chair of Botany and Plant Physiology, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110 Siedlce, Poland

autor

Klocek J.

• Department of Biology, Chair of Botany and Plant Physiology, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110 Siedlce, Poland

autor

Horbowicz M.

• Department of Biology, Chair of Botany and Plant Physiology, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110 Siedlce, Poland

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Identyfikatory

DOI

10.5586/aa.1730