Journal ArticleDOI
Chromosome Contraction by o-Isopropyl-N-Phenylcarbamate (IPC)
William B. Storey,Jay D. Mann +1 more
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A selective herbicide IPC (o-isopropyl-N-phenlycarbamate) causes contraction of chromosomes in the prophase, metaphase, and anaphase stages of mitosis in cells of treated root tips.Abstract:
A selective herbicide IPC (o-isopropyl-N-phenlycarbamate) causes contraction of chromosomes in the prophase, metaphase, and anaphase stages of mitosis in cells of treated root tips Effective concentrations in aqueous solution lie between 25 and 50 ppm, and effective times between 1 and 4 hr, depending upon the species of plant A suggested starting combination is 10 ppm for 2 hr This compound is effective in causing contraction of chromosomes in a wide range of plant species, as well as enhancing separation in acetocarmine and aceto-orcein squashes in many cases Possibly, it may produce similar results in species which have been found to be unaffected by colchicine, 8-hydroxyquinoline, p-dichlorobenzene, and other commonly used chemicalsread more
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Effects of Herbicides on RNA and Protein Syntheses
Journal ArticleDOI
Chromosome Numbers in Zamia (Cycadales)
TL;DR: It is suggested that the trend in karyotype evolution in Zamia has been in the direction of increasing symmetry produced by fusion of telocentric chromosomes.
Journal ArticleDOI
Spontaneous tetraploidy in apomictic seedlings ofCitrus
H. C. Barrett,D. J. Hutchison +1 more
TL;DR: The data suggest that the ability to produce tetraploid apomictic seedlings is a variable genetic trait present in all or nearly all clones able to reproduce by adventitious embryony.
Journal ArticleDOI
Use of small angle x-ray diffraction to investigate disordering of membranes during preparation for electron microscopy. II. Aldehydes
TL;DR: It was shown that conventional aldehyde fixatives introduced changes in the diffraction pattern of fixed nerve, apparently as a result of significant extraction of both polar and non-polar lipids.
Journal ArticleDOI
Biochemical changes in stored potato tubers with different rest periods
TL;DR: In this article, the protein changes in the eyes and the parenchyma of stored potato tubers of cvs. Baca and Bem, having different rest periods and the effects of storage temperature and isopropyl phenylcarbamates on the protein were studied.
References
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Journal ArticleDOI
Cytological studies on the effect of herbicides on plant cells in vivo. I. Hormonic herbicides.
TL;DR: In this report, the effect of 12 non-hormonic herbicides were examined mainly on the hair cells of Tradescantia, the stipular ones of Vicia,The pollen grain mitoses of Tradingcante, the petal cells of Allium, and the root tip cells of Triticurn by fixed preparations.
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Rapid Action of Carbamate Herbicides Upon Plant Cell Nuclei
TL;DR: IPC (O-isopropyl N-phenyl carbamate), CIPC, and barban (4-chloro-2-butynyl N-(3-chlorophenyl) carbamate) are selective herbicides which inhibit growth of young seedling plants without causing immediate death as discussed by the authors.