EDTA effects on seedling emergence and growth of Chenopodium album (L.) in Pb contaminated soil. Mahdieh Ebrahimi*
نویسندگان: ثبت نشده
The study was conducted to investigate the effects of ethylenediaminetetraacetic acid (EDTA) on seedling emergence, morphological characteristics, and photosynthetic pigments of Chenopodium album (L.) in lead (Pb) contaminated soil. The Pb contaminated soils were taken from Hirmand River. The soil samples mixed with 0.71 g Li-1 Pb (PbNO3)2 to increase the Pb concentration. EDTA was added to the soil in concentrations of 1.5, 3 and, 9 mg kg-1 after sowing the seeds. Results showed that EDTA significantly decreased seedling emergence. The highest reduction in germination was related to 9 mg kg-1 EDTA. With increasing EDTA dosage, mean seedling emergence time increased. The highest seedling vigor index (17.29) was related to the control treatment while the lowest seedling vigor index (2.15) was measured in 9 mg kg-1 EDTA. With increasing EDTA concentration, plant biomass decreased. The highest reduction was observed in 9 mg kg-1 EDTA. The maximum and minimum pedicel length, radical length, and tolerance index were measured in 1.5 and 9 mg kg-1 EDTA treatments, respectively. The highest amounts of chlorophyll a, b, total chlorophyll, and carotenoid were observed in 1.5 mg kg-1 EDTA. Increased EDTA from 1.5 to 9 mg kg-1 led to a decrease in photosynthetic pigments.In general, results showed that EDTA at high concentrations had deterrent impacts on the plant growth. Therefore, high concentrations of this compound are not suggested to increase remediation efficiency of Pb contaminated soil.
Chenopodium album seedling emergence studies were conducted at nine European and two North American locations comparing local populations with a common population from Denmark (DEN-COM). Mortality risk. Weedy plant life history conforms to the time of mortality risk from either the environment (e.g. frozen soil in the winter) or cropping systems practices (e.g. herbicide use). C. album life his...متن کامل
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Establishment of arbuscular mycorrhizal symbiosis in plant roots can affect plant physiological and morphological characteristics and may induce tolerance to heavy metals in plants grown in polluted soils; therefore, it can play an important role in phytoremediation. In present study, to investigate the effect of mycorrhizae on alfalfa growth and Pb uptake, a factorial experiment was designed w...متن کامل
Seedling Emergence and Biomass Growth of Oleaginous and Other Tropical Species in Oil Contaminated Soil
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BACKGROUND A Chenopodium album L. biotype surviving in atrazine-treated Serbian corn fields (VC) was compared against atrazine-susceptible (S) and atrazine-resistant (R) standards. RESULTS Atrazine (2 kg ha(-1)) killed S and VC shoot biomass 15 days after treatment (DAT), but R was only suppressed by 42% and survived 8 kg ha(-1). Atrazine at 2 kg ha(-1) only inhibited VC height by 60% as agai...متن کامل
دوره 8 شماره 2
صفحات 2361- 2370
تاریخ انتشار 2018-01-01
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