Results 271 to 280 of about 122,613 (300)

Cytoplasmic Localization of Deoxyribonucleic Acid in Allium cepa [PDF]

Nature, 1962
IT is believed generally that the normal complement of deoxyribonucleic acid (DNA) occurs exclusively on the chromosomes. However, that this is true of all plant cells has been contested. Thus ultra-violet absorption microscopy was used to show that it occurred predominantly in the cytoplasm of the root meristem cells of Vicia faba which had been ...
A. A. Silcox, J. Chayen, Peter B. Gahan
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Effects of Diethylstilbestrol on Allium cepa

Botanical Gazette, 1948
Observations are reported on seeds, bulbs, and roots of onion which had been treated with concentrations of diethylstilbestrol ranging from 66 γ to 100 mg. in 10 cc. of tap water. Contrary to findings of Lettre (2, 3) on animal tissue in vitro, no confirmation of a colchicinelike action on mitosis was obtained in the absence of toxic effects.
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Traditional and modern uses of onion bulb (Allium cepa L.): a systematic review

Critical reviews in food science and nutrition, 2018
Onion, (Allium cepa L.), is one of the most consumed and grown vegetable crops in the world. Onion bulb, with its characteristic flavor, is the third most essential horticultural spice with a substantial commercial value. Apart from its culinary virtues,
Joaheer D Teshika, Aumeeruddy M Zakariyyah, Toorabally Zaynab, G. Zengin, Kannan R. R. Rengasamy, S. K. Pandian, M. Fawzi   +6 more
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Study on antioxidant enzymes in Allium cepa L. and Allium fistulosum L.

Phytotherapy Research, 1998
Activities of superoxide-dismutase (SOD), catalase (C-ase), peroxidase (P-ase) and glutathione-peroxidase (GP-ase) were investigated in leaves, stalks and roots of Allium cepa L., Allium fistulosum L. planted in the spring and Allium fistulosum L. planted in the autumn. Allium fistulosum L. spring, exhibited high SOD, C-ase and GP-ase activities in all
Štajner, Dubravka, Milić, N., Lazic, Biljana, Mimica-Dukić, Neda   +3 more
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Prospecting toxicity of octocrylene in Allium cepa L. and Eisenia fetida Sav

Environmental science and pollution research international, 2022
D. Santo, Elisangela Dusman, Regiane Silva Gonzalez, A. L. Romero, Gabrielle Cristina Santos Gonçalves do Nascimento, Matheus Augusto Souza Moura, P. Bressiani, Ádila Cristina Krukoski Filipi, E. M. V. Gomes, J. C. Pokrywiecki, Flávia Vieira Silva Medeiros, Débora Cristina Souza, A. Peron   +12 more
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The effect of lead on Allium cepa L.

Mutation Research Letters, 1992
The effect of lead on Allium cepa L. at concentrations of 0.1, 1.0, 10, 50, 100 and 200 ppm were studied. Analysis focused on root growth, frequency of mitosis in a meristematic zone, and chromosomal aberrations. It was observed that lead reduces root growth and the frequency of mitotic cells in meristematic zones, and increases the frequency of ...
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Meiosis inAllium fistulosum, Allium cepa, and their hybrid

Hilgardia, 1935
Abstract does not appear. First page follows. A Preceding paper(4) discussed the general morphology of several varieties of Allium. cepa L., Allium fistulosum L., and their hybrids. Because of the high degree of self-sterility in the hybrid, cytological studies were begun in 1932 in the hope that they might explain the cause ...
H. A. Jones, S. L. Emsweller
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What can the Allium cepa test say about pesticide safety? A review

Environmental science and pollution research international, 2022
Carlos Filipe Camilo-Cotrim, E. F. C. Bailão, L. S. Ondei, F. M. Carneiro, L. M. Almeida   +4 more
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Green-Synthesized Nanoparticles Enhanced Seedling Growth, Yield, and Quality of Onion (Allium cepa L.)

ACS Sustainable Chemistry and Engineering, 2019
Green nanotechnology is rapidly expanding in sustainable precision agriculture that promises to revolutionize food production.
P. Acharya, G. Jayaprakasha, K. Crosby, J. Jifon, B. Patil   +4 more
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Toxicity of Difenoconazole and Tebuconazole in Allium cepa

Water, Air, & Soil Pollution, 2015
Macroscopic (germination and root growth) and microscopic (mitotic index, chromosome, and nuclear aberrations) analyses have been used to determine the toxicity of environmental pollutants. To better understand the molecular mechanisms of mutation and their effects, molecular markers offer a key perspective, as they measure the direct effects of DNA ...
Bernardes, Paula Mauri, Andrade-Vieira, Larissa Fonseca, Aragão, Francielen Barroso, Ferreira, Adésio, Ferreira, Marcia Flores da Silva   +4 more
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