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| Khaliq,A.; Matloob,A.; Aslam,F.; Mushtaq,M.N.; Khan,M.B. |
| The toxic action of aqueous wheat (Triticum aestivum) straw extracts was investigated on germination, early seedling growth, some biochemical attributes and the antioxidant enzymes of horse purslane (Trianthemaportulacastrum). Aqueous extracts of wheat straw were prepared by soaking the wheat straw in distilled water in 1:10 w/v ratio and diluted to obtain the concentrations of 0, 25, 50, 75 and 100%. These were used as pre and post emergence in laboratory and screen house trials. Wheat aqueous extracts exhibited phytotoxicity to horse purslane by inhibiting and delaying its germination and suppressing seedling growth. Wheat phytotoxins in its aqueous extracts suppressed the chlorophyll content and soluble protein, and enhanced soluble phenolics and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytotoxins; Germination; Seedling growth; Phenolics; Antioxidants. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000200005 |
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| KHAN,M.J.; AHMED,N.; HASSAN,W.; SABA,T.; KHAN,S.; KHAN,Q.. |
| ABSTRACT: Phytoremediation is a useful tool to restore heavy metals contaminated soils. This study was carried out to test two castor (Ricinus communis) cultivars [Local and DS-30] for phytoextraction of heavy metals from the soil spiked by known concentrations of seven metals (Cu, Cr, Fe, Mn, Ni, Pb and Zn). A pot experiment was laid out by using a completely randomized design. Soil and plant samples were analyzed at 100 days after planting. The data on heavy metal uptake by plant tissues (roots, leaves and shoots) of the two castor cultivars suggested that a considerable amount of metals (Fe = 27.18 mg L-1; Cu = 5.06 mg L-1; Cr = 2.95 mg L-1; Mn = 0.22 mg L-1; Ni = 4.66 mg L-1; Pb = 3.33 mg L-1; Zn = 15.04 mg L-1) was accumulated in the plant biomass.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytotoxins; Soil contaminants; Phytoextraction. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100170 |
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| RAMOS,C.J.B.; FONSECA,R.R.; SOUZA FILHO,A.P.S.; TEIXEIRA,V.L.. |
| ABSTRACT: Two lipophilic extracts and atomaric acid (1), an isolated natural product, were obtained from the marine brown alga Stypopodium zonale (Dictyotaceae) to identify and characterize their potential inhibitory effects on the seed germination, radicle elongation, and hypocotyl development of the weeds Mimosa pudica and Senna obtusifolia. The extracts were prepared with hexane and dichloromethane, and atomaric acid (1) was isolated from hexane extract by way of conventional chromatographic methods. During a 15 days period, germination bioassays were performed at 25 oC with a 12 h photoperiod, whereas radicle elongation and hypocotyl development were assayed at 25 oC with a 24 h photoperiod. After, Petri dishes 9.0 cm in diameter were coated with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytotoxins; Stypopodium zonale; Mimosa pudica; Senna obtusifolia. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100177 |
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