Results 161 to 170 of about 1,518 (213)
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Action of Maleic Hydrazide on the Cell
Nature, 1951THE substance known as maleic hydrazide (1,2-dihydropyridazine-3,6-dione) was introduced in 1949 by the United States Rubber Co. as a “growth regulator”. In the past year it has been widely tested in laboratory and field experiments1,2. Its practical value in enhancing winter hardiness, delaying flowering, inducing male sterility, and also in ...
C D, DARLINGTON, J, McLENH
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Carcinogenicity of the Herbicide Maleic Hydrazide
Nature, 1967MALEIC hydrazide, l,2-dihydropyridazine-3,6-dione, was synthesized in 1947 (ref. 1) and has since become an important herbicide with uses including inhibition of sprouting in vegetables and stored root crops, prevention of sucker production in tobacco plants and growth control of grass, and foliage2, Maleic hydrazide is claimed to be selectively toxic ...
S S, Epstein +5 more
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Cytotoxic effects of maleic hydrazide
Mutation Research/Reviews in Genetic Toxicology, 1978Since 1950, maleic hydrazide (MH) has been introduced into agriculture as a major commercial herbicide and a depressant of plant growth in numerous circumstances such as suppression of sprouting of vegetables and stored food crops, control of sucker growth on tobacco plants, ratardation of flowering and prolongation of dormancy period.
Z, Swietlińska, J, Zuk
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Maleic hydrazide as an antimetabolite of uracil
Planta, 1972When labelled uracil was supplied to the solution bathing the cambial surfaces of bark strips of willow, uptake into the sieve elements took place as evidenced by the appearance of radioactivity in the honeydew of aphids feeding on the strips. When maleic hydrazide (MH) was also applied an inhibition of uracil uptake was observed. However uracil seemed
D, Coupland, A J, Peel
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Maleic hydrazide, carcinogenicity study in rats
Toxicology, 1981The carcinogenicity of maleic hydrazide is discussed by several national and international organizations because of contradictory results of a number of carcinogenicity studies carried out in the past. Because maleic hydrazide is used in agriculture on edible crops, an oral carcinogenicity study with rats was carried out for 28 months at dietary levels
van der Heijden, CA +3 more
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Polymorphism of maleic hydrazide. I
Acta Crystallographica Section B Structural Science, 2001The third polymorph (denoted MH3) of maleic hydrazide (3,6-dihydroxypyridazine in the monolactim form, 6-hydroxy-3-pyridazinone, C 4 H 4 N 2 O 2 ) has been studied by X-ray ...
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Controlled pyrolysis of maleic hydrazide
Journal of Biochemical Toxicology, 1977AbstractMaleic hydrazide (MH) has been pyrolysed at 600°C in our controlled pyrolysis apparatus. During pyrolysis volatile compounds distil out ahead of the moving heated zone and are not extensively repyrolysed, while those substances which are absorbed by pyrolysand or are relatively nonvolatile are repyrolysed. Also, reactive intermediates can react
Walter T. Smith +3 more
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THE POLAROGRAPHY OF MALEIC HYDRAZIDE
Canadian Journal of Chemistry, 1955Maleic hydrazide was found to be similar to maleic acid in its polarographic behavior. Two pairs of double waves are produced, one in the region around pH 5.9 and the other around 8.2. The theory that the double waves are a result of the reduction of the undissociated acid followed by that of its anion at a higher negative potential appears to explain
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Canadian Journal of Chemistry, 1956
Maleic hydrazide was previously reported to have two sets of pH dependent double waves, one at low pH for which existing theories provide adequate explanation and one at higher pH for which no explanation has been offered to date. The present work is an attempt to discover the reasons for the existence of the second set of waves.
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Maleic hydrazide was previously reported to have two sets of pH dependent double waves, one at low pH for which existing theories provide adequate explanation and one at higher pH for which no explanation has been offered to date. The present work is an attempt to discover the reasons for the existence of the second set of waves.
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Maleic Hydrazide and Isonicotinyl Hydrazide as Carbonyl Reagents
Physiologia Plantarum, 1966Abstract The effects of maleic hydrazide (MH) and isonicotinyl hydrazide (INH) on the reactions catalyzed by pea cotyledon amine oxidase, carrot root l‐glutamic decarboxylase, and wheat seedling transaminase have been studied. The activity of amine oxidase is inhibited if it is incubated with MH or INH before the addition of substrate, and it is also ...
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