Publications

photoacoustic characteristics of leaves of atrazine-resistant weed mutants.	the photosynthetic characteristics of leaves of atrazine-resistant and-susceptible biotypes of several weed species (solanum nigrum, senecio vulgaris, epilobium ciliatum and chenopodium album) were compared using the photoacoustic method. analysis of the dependence of the photoacoustic signal of the modulation frequency indicated that, in solanum, epilobium and senecio, the relative quantum yield of o2 evolution ϕ (estimated by the ratio of the amplitude of the o2 signal, aox, to that of the pho ...	1989	24424493
preliminary evaluation of some wild and cultivated plants for snail control in machakos district, kenya.	fifty local medicinal, agricultural and wild growing deciduous plants, representing 49 species, 46 genera and 22 families, were screened as water extracts at 1:1000 concentration for molluscicidal activity against biomphalaria pfeifferi in machakos district, kenya. forty-seven of the 50 (94%) plants and 106 of the 134 (79%) plant materials (roots, stems, leaves, fruits, flowers and seeds) were molluscicidal. the leaves of pappea capensis (sapindaceae), steganotaenia araliacea (umbelliferae), zor ...	1987	3656497
transformation of solanum nigrum l. protoplasts by agrobacterium rhizogenes.	solanum nigrum protoplasts were co-cultivated with agrobacterium rhizogenes harboring agropine-type ri plasmid (pri15834). a large number of transformed calli were obtained on murashige and shoog's (ms) medium lacking plant growth regulators. frequency of transformation was about 3.5×10(-3). in most of the calli, hairy roots appeared on ms medium without plant growth regulator. when the hairy roots were cut into segments and subcultured on ms medium lacking plant growth regulators, calli were re ...	1986	24248042
[the hypotensive effect of solanum nigrum].		1984	6235029
acetylcholine-like activity in the fruit of the black nightshade (solanaceae).	the presence of acetylcholine in aqueous extracts of the fruit of solanum nigrum linn. (black nightshade) has been established based upon the following pharmacological tests: a) isotonic contraction of the isolated toad rectus abdominis; b) negative chronotropic and inotropic action on the isolated toad heart; c) isotonic contraction of the isolated guinea pig's ileum; d) isotonic contraction of the rat's isolated jejunum; 3) decrease on the cat's arterial blood pressure; f) secretory effects on ...	1978	122174
intraspecific morphological variation among populations of pratylenchus brachyurus and p. coffeae.	three populations of pratylenchus coffeae and two of p. brachyurus, each originating from a single female, were maintained on citrus spp. or solanum nigrum l. for several years under greenhouse conditions. nematodes were extracted from roots, and adult female specimens were killed, fixed, and mounted in glycerine for microscopic study. variables measured were distance between vulva and anus and lengths of the stylet, posterior uterine sac, and tail. the mean data and coefficients of variability ...	1978	19305830
laboratory evaluation of molluscicidal & mosquito larvicidal activities of leaves of solanum nigrum l.	indiscriminate use of synthetic pesticides has created serious problem for the aquatic flora and fauna, and also resulted in appearance of pesticide resistance in vector population. this study was designed to evaluate the biocontrol efficacy of aqueous and solvent extracts of mature leaves of solanum nigrum l., against fresh water snail lymnaea acuminata f. rufescens (gray) (an intermediate host of parasites causing fasciolopsiasis) and larvae of culex vishnui group (reuben) (vector of japanese ...	0	25297363
mosquito larvicidal activity of solanum nigrum berry extracts.	phytochemicals are widely used as biocontrol agent against vector mosquitoes. the present study was undertaken to isolate and evaluate the mosquitocidal activity of various extracts of berries of s. nigrum against culex quinquefasciatus. crude and chloroform: methanol (1:1, v/v) extracts of fresh, mature, green berries of s. nigrum were tested against cx. quinquefasciatus. the lethal concentration was determined and the chemical nature of the active substance was evaluated. a qualitative phytoch ...	0	23760385