seedling Articles
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Phytotoxicity of methylene blue to rice seedlings
Methylene blue is widely used in various industrial branches. Due to insufficient treatment, its occurrence in wastewater is frequently detected, which may result in serious environment problems to aquatic organisms. Hydroponic experiments were conducted with rice seedlings (Oryza sativa L. cv. XZX 45) exposed to methylene blue to determine the effective concentration using relative growth rate ...
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Amelioration of Mn toxicity by Brassinosteroids in Brassica juncea L.
The effects of 28-homobrassinolide (28-homoBL) on protein content and antioxidative enzyme activities in 7-days old Brassica juncea L. seedlings were studied. The seeds pre-treated with different concentrations of 28-homoBL were germinated in Petriplates supplied with various concentrations of heavy metal (Mn). The activities of superoxide dismutase, catalase, ascorbate peroxidase, guaiacol ...
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Overexpression of Glutathione reductase in cotton does not alter emergence rates under temperature stress
Cotton (Gossypium hirsutum L.) seedlings are considered to be sensitive to temperature stress. The exposure of plants to high and low temperatures can result in the production of reactive oxygen species that contribute to diminished plant performance. Plants have mechanisms that metabolize oxidants into less harmful chemicals, and enhancement of antioxidant metabolism has been shown to be ...
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Effect of aluminum and chromium on the growth and germination of mesquite (Prosopis juliflora swartz.) DC.
Abstract: Prosopis seeds were grown under controlled environment in solution of aluminum and chromium at different concentration alone as well as combined together. The effect of these metals was studied on seed germination, root length, shoot length, seedling length and dry biomass. Aluminum and chromium alone, and combined together showed no effects on germination and dry biomass. Chromium ...
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A dynamic model of cotton emergence based on the thermal dependence of malate synthase
Cotton (Gossypium hirsutum L.) is frequently planted when temperatures are not optimal for germination and emergence. Delayed emergence, a common contributor to diminished plant performance later in the season, is often related to nonoptimal temperatures. Improvement of cotton performance requires knowledge of the source, pattern, and magnitude of thermal limitations on seedling metabolism. In ...
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Effects of bisphenol A on growth and nitrogen nutrition of roots of soybean seedlings
Bisphenol A (BPA) is an environmental endocrine disruptor that seriously threatens ecological systems. Plants are the primary producers in ecological systems, but little information is available concerning the toxic effect of BPA on plants. In the present study, the effects of BPA on the growth and nitrogen nutrition of roots of soybean seedlings were investigated by using a root automatic scan ...
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Anthocyanin production by over-expression of grape transcription factor gene VlmybA2 in transgenic tobacco and Arabidopsis
An myb-related transcription factor gene of the anthocyanin biosynthetic pathway, VlmybA2, from the Kyoho grape (Vitis labruscana) was introduced into tobacco and Arabidopsis under the control of the cauliflower mosaic virus 35S promoter. The 35S:VlmybA2-induced anthocyanin production was prominent in transformed tobacco calli, and the regenerated tobacco plants were completely purple. Except for ...
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Talk about the Benefits of the Nursery Seedlings
Today I want to talk to you about the benefits of the plug seedlings of the nursery seeding planter. Everyone knows that the plug planter is relatively common in our lives. Using it can bring us many benefits. Below, the editor will briefly explain to you what are the advantages of the tray planter? 1. The main substrates for plug seedlings are peat soil, vermiculite, perlite, and other light ...
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Genetics of leaf rust resistance in the soft red winter wheat ‘Caldwell’
The soft red winter wheat (Triticum aestivum L.) ‘Caldwell’ has effective resistance to leaf rust caused by Puccinia triticina. To determine the genetic basis of this resistance, Caldwell was crossed with the leaf rust–susceptible spring wheat ‘Thatcher’, and the F1 plants were backcrossed to Thatcher to obtain backcross (BC) F2 (BC1F2) families. In the seedlings, the BC1F2 families segregated ...
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Tissue-specific expression of rice CYP72A21 induced by auxins and herbicides
Cytochrome monooxygenase P450s (CYPs) comprise one of the largest enzyme families in plants. Some P450s are involved in xenobiotic metabolism: they confer herbicide tolerance and are induced by chemical treatments. We isolated a novel P450 cDNA, CYP72A21 (accession number, AB237166), from rice (Oryza sativa L. cv. Nipponbare) seedlings treated with a mixture of 2,4-dichlorophenoxyacetic acid ...
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Germination and seedling growth of corn (Zea mays l.) under varying levels of copper and zinc
The heavy metal tolerance in corn (Zea mays L.) var. ‘Neelum’ was assessed at germination and seedling growth after having subjected it to different concentrations of CuSO4 and ZnSO4. Germination was not affected by any of the metal tested, whereas initial growth was strongly inhibited by increasing concentrations of ZnSO4. Seedlings developed toxicity symptoms in the presence of both metals but ...
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Effect of aluminum and chromium on the germination and growth of two Vigna species
Abstract: The study deals with the effect of metal toxicity (aluminum, chromium and combination of both the metals) on seed germination, root length, shoot length, seedling length and dry biomass of Vigna radiata and V. sinensis. Chromium adversely affected the seedling by significantly reducing the growth whereas aluminum did not show such effect in both the species. Percentage of germination ...
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Combined effects of bisphenol A and cadmium on growth and nitrate assimilation of soybean seedling roots
Bisphenol A (BPA) and cadmium (Cd) pollution exist simultaneously in many regions. However, little information is available regarding the combined effects of BPA and Cd pollution on plants. Plant roots are in direct contact with the soil, which is an important compartment of BPA and Cd. Here, the effects of combined BPA and Cd pollution on soybean seedling roots were evaluated in pot ...
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Biological responses of Vicia faba seedlings to the imidazolium‐based ionic liquid 1‐hexyl‐3‐methylimidazolium chloride in soil
Although there are a few studies on the toxicity of ionic liquid (ILs), relatively little is known about the toxic effects of these liquids in the soil on plants. In the present study, the toxic effects of 1‐hexyl‐3‐methylimidazolium chloride ([Hmim]Cl) in the soil on Vicia faba (V. faba) seedlings and the influences of [Hmim]Cl on the physicochemical properties of the soil were studied. The ...
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Root and foliar uptake, translocation and distribution of [14C]fluoranthene in pea plants
Uptake of 14C‐labelled fluoranthene ([14C]FLT) via both roots and leaves of Pisum sativum seedlings and distribution of [14C] in plants by both acropetal and basipetal transport was evaluated. The highest [14C] level was found in root base (≈270 × 104 dpm/g dw) and the lowest level in the stem apex (<2 × 104 dpm/g dw) after just 2 hours of root exposure. For foliar uptake, the highest level of ...
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Effects of bisphenol a on mineral nutrition in soybean seedling roots
Bisphenol A (BPA) is a ubiquitous chemical in the environment and is potentially harmful to plants. However, relevant studies on the effects of BPA on plants are relatively scarce. In the present work, the effects of BPA on the biomass (fresh and dry weight), absorptive function (activity and absorptive area), and mineral element levels in soybean (Glycine max L.) seedling roots treated with ...
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Response of nitrogen uptake and partitioning to critical nitrogen supply in oat cultivars
Nitrogen uptake and partitioning in oat (Avena sativa L.) are not well documented. A greenhouse study was conducted to determine the critical timing of N supply on the growth, N uptake, and partitioning. Plants grown in plastic pots were subjected to five N fertilization regimes: (i) control, N supply from seedling to physiological maturity (PM); (ii) N supply from seedling to flag leaf; (iii) N ...
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Antioxidant and prooxidant effects of lanthanum ions on Vicia faba L. seedlings under cadmium stress, suggesting ecological risk
The present study combined chemical analyses and biological measurements to investigate biphasic effects of La on Cd stress in leaves of Vicia faba seedlings, which were hydroponically cultivated for 15 d in the combination of 6 µM CdCl2 and 2 to 480 µM La(NO3)3, respectively. The results showed that contents of Cd first elevated above and then declined below the 6 µM single Cd treatment when 2 ...
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Things Should be Noticed during Operating Rice Transplanter
Start the engine in the following orders: check whether there is full of oil in the engine; open the oil circuit and then open the throttle; check the whether the clutch is separate and the gear shift level is in the neutral position; start the engine. Before planting the rice seedlings, a test should be made to check whether the machine can transplanter the rice according to the rice ...
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Phytotoxic effect of aluminum and chromium on the germination and early growth of wheat (Triticum aestivum) varieties Anmol and Kiran
A greenhouse experiment was conducted to determine the phytotoxic effect of aluminum and chromium on the germination and early growth of two wheat (Triticum aestivum) varieties Anmol and Kiran. Seed were treated with 40, 80, 120 and 160 ppm of aluminum and chromium solution individually and in combined form. Observations were made on seed germination, root, shoot and seedling length, and dry ...
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