Germination inhibition

The response of marine macrophytes on oil dispersion is dependent on the type of both oil and oil dispersant [292]. Germination inhibition of the marine macrophyte Phyllospora comosa was used to assess and compare the effects of oil dispersants and dispersed diesel fuel and crude oil combinations. The inhibition of germination by the water-soluble fraction of diesel fuel increased after adding all dispersants investigated. This contrasted with crude oil, in which the addition of some dispersants resulted in an enhanced germination rate. 

Biological Assay. Individual compounds, I-XVI, were tested for germination inhibition, and radicle and hypocotyl length alteration. 

Figure 4. Correlation of seed germination inhibition (x-x) with GC peak size of compound RT = 29.5 min (o-o) of fractions 68-73 of the liquid chromatography (see Figure 3). (Reproduced with permission from reference 6. Copyright 1982 Verlag der Zeitschrift fur Naturforschung.)...

Matsuzaki, T., and A. Koiwai. Germination inhibition in stigma extracts of tobacco and indentification of MeABA, ABA and ABA-Beta-D-glucopyranoside. Agr Biol Chem 1986 50(9) 2193-2199. 

Spencer, G.F. and Tjarks, L.W., Germination inhibition by 5,7-dihydroxychromone, a flavanoid decomposition product, /. Plant Growth Regul., 4, 177, 1985. 

Germination inhibition Seeds of cucumber, mustard, oat, and onion were placed in thin layers of soil that previously had been mixed with the chemical at rates of 5 and 10kg of active ingredient per hectare (kg a.i./ha). Influences on seed germination and early growth of seedlings were recorded. 

Cinnamic aldehyde spp., Pogostemon cablin (Lamiaceae), [germination inhibition]... 

During the search for a lettuce seed germination inhibiting substance from a species of lum (unidentified) a novel com-... 

C-Methylene-MI (MMO) is one of several MI antagonists that produce morphological modifications in Schizosaccharomyces pombe, a fission yeast with an absolute requirement for MI (Schopfer et al., 1969). When this epoxide is injected into rats, MIOase is inactivated and necrotic lesions develop in the kidneys. Simultaneous administration of MI prevents enzyme inactivation and reduces cytotoxicity (Weinhold and Anderson, 1967). The epoxide also represses pollen germination, inhibits pollen tube elongation, and delays seed germination (Chen et al., 1977 Maiti and Loewus, 1978a,b). 

Some bithienyl and terthienyl derivatives display biological activities including antifungal, nematocidal, and seed germination inhibition. The Stille reaction is regarded as the method of choice for the preparation of these thiophenes. For example, the union of 5-iodo-2-thiophenecarboxaldehyde and 2-tributylstannylthiophene furnished 5-(2 -thienyl)-2-thiophenecarboxaldehyde (209) [96]. In addition, terthienyl and bithienyl derivatives have been synthesized using 3,4-dinitro-2,5-dibromothiophene [143] and... 

Dichlobenil is a potent inhibitor of germination, inhibiting the actively dividing cells of meristems. It stops the growth of sprouts of perennial weeds, but their root systems survive the treatment, so the weeds may resprout. Dichlobenil is ineffective against dormant tubers (Hardcastle and Wilkinson, 1968). 

Cathartic effects Allergenicity Hypotensive activity Insecticidal activity Piscicidal activity Germination inhibition Antimicrobial activity Fungistatic activity Influence on nucleic acids Influence on enzymes... 

Phytotoxicity is expressed as a del of seed germination, inhibition of plant growth or aity adverse effect on plants caused by specific substances (phytotoxines) or growing conditions. 

Bradow, J.M. W.J. Connick, Jr. 1988b. Seed-germination inhibition by volatile alcohols and other compounds associated with Amaranthus palmeri residues. J. Chem. Ecol. 14 1633-1648. 

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