Stability of head weight in cabbage accessions (Brassica oleracea var. capitata L.)

An understanding of the causes of genotype x environment interaction can help in identifying traits and environments for better cultivar evaluation. The fact that head formation depends on other factors besides the cabbage accessions involved, makes it necessary to investigate accessions responses to agroecological growing conditions. Studied in the present paper was the stability of 21 cabbage accessions (10 cultivars and 11 F1-hybrids) with regard to head weight over three growing seasons. Joint analysis of variance revealed highly significant differences among the cabbage accessions, study years and accessions x year interactions. The parameter stability test showed that seven of the accessions (Kopenhaski and Elisa-F1 as early type; Tucana-F1 as summer type; Srpski melez, SG-3014, Ljubljanski and Rodeo-F1 as late type) significantly deviated from the regression line. Four of the seven accessions are cultivars and three F1-hybrids. These accessions had quite different regression coefficients around or above the value of one. Analysis of stability parameters for head weight showed the following accessions to be very stable: Copenhagen market (an early variety), Grenadier-F1 (a summer cabbage) and Ljubljanski (a late variety).Key words: Stability, variety, cabbage, interaction, growing

Some observations on industrial toxicology of some chlorinated hydrocarbons

Istraženo je djelovanje trikloretilena, tetraklorugljika, heksakloretana i heksaklorcikloheksana na radnike zaposlene u kemijskim čistionicama za suho čišćenje odjevnih predmeta i u jednom poduzeću za proizvodnju lijekova.In this report the results are presented of the investigations on the risk of exposure to carbon tetrachloride, hexachlorethane and hexachlorcyclohexane carried out in some dry-cleaning shops and a drug factory. 81 persons were examined. The most numerous complaints were recorded among the workers exposed to carbon tetrachloride and trichlorethylene. Irritation was found to be the most frequent symptom in workers exposed to hexachlorethane and hexachlorcyclohexane. The scarcity of other symptoms seems to be due to the low volatility of these chlorinated hydrocarbons. The most significant findings supposed to be specific were alterations in serum albumin-globulin ratio observed in workers exposed to trichlorethylene, carbon tetrachloride, and hexachlorethane. In the majority of cases these alterations were in no connection with any other sign of the liver injury. In the authors\u27 opinion, they may be correlated with the effect of chlorinated hydrocarbons on the liver function. However, the mechanism of these changes remains to be explained

Temperature and magnetic field effects on the activity of protocerebral neurosecretory neurons and corpora allata in Cerambyx cerdo L. larvae

The effects of constant temperature and an extremely low-frequency magnetic field (ELFMF, 50 Hz and average induction of 20 mT) on the activity of medial protocerebral neurosecretory neurons (A1 and A2) and corpora allata were investigated in Cerambyx cerdo L. larvae after 30 days of exposure. Both constant temperature of 23°C and the ELFMF led to decrease in activity of A1 and A2 neurosecretory neurons and increase in activity of corpora allata compared to the control group (larvae from natural conditions). The changes are more pronounced in A2 than A1 neurons.Ispitivan je uticaj konstantne temperature i ekstremno niskofrekventnog magnetnog polja (ELFMF, 50 Hz i prosečna indukcija 20mT) na aktivnost medijanih protocerebralnih neurosekretnih neurona (A1 i A2) i corpora allata kod larvi Cerambyx cerdo posle 30 dana izlaganja i konstantna temperatura od 23°C i ELFMF dovode do smanjenja aktivnosti A1 i A2 neurosekretnih neurona i povećanja aktivnosti corpora allata u poređenju sa kontrolnom grupom (larve iz prirodnih uslova). Promene su više izražene kod A2 nego kod A1neurona.nul

Clinical observations on the effect of lead on the kidney

lznesen je problem toksičkog djelovanja olova na bubrege s obzirom na dosadašnje podatke u literaturi. Prikazana su vlastita zapažanja kod 54 od 56 bolesnika otrovanih olovom, koji su liječeni u Odjelu za profesionalne bolesti Instituta za medicinska istraživanja. Trajne promjene na bubrezima u obliku kronične progredijentne difuzne nefropatije opažene su samo kod 2 bolesnika. Oba su bila u dugoj i vjerojatno visokoj ekspoziciji olovu (20, odnosno 35 godina), a imali su višekratna manifestna otrovanja olovom. 28 bolesnika pokazivalo je oštećenja bubrežnih funkcija, koja su utvrđena pokusom koncentracije mokraće, PSP testom, Ucl testom i određivanjem ureje u krvi, a da kod toga u mokraći nije bilo patoloških promjena. Autori su mišljenja, da su funkcionalna oštećenja uvjetovana poremećajima u intrarenalnoj cirkulaciji, odnosno spastičkim djelovanjem olova na krvne žile bubrega i direktnim toksičkim ili indirektnim hipoksičkim efektom olova na tubule. Poremećenja parcijalnih funkcija bubrega bila su u pravilu tranzitorna. Krvni tlak je bio povišen samo kod 6 bolesnika, od kojih su 2 imala pogredijentnu organsku nefropatiju. Najvjerojatnije je, da se kod tih bolesnika radi o hipertenziji nefrogenog karaktera. U jednom slučaju povišeni krvni tlak bio je tipa esencijalne hipertonije, pa se uzročna veza između otrovanja olovom i hipertonije ne može sa sigurnošću pretpostaviti. Kod ostala 3 bolesnika hipertonija je bila prolazna i prisutna samo u vrijeme akutne manifestacije otrovanja. Autori su primijetili, da je pri ispitivanju parcijalnih funkcija bubrega neobično važno vrijeme, kada se pojedine pretrage vrše. Pokazalo se, da se eventualne lezije mijenjaju u prirodnom toku bolesti. Ako se to izgubi iz vida, mogu se dobiti prividno divergentni i protuslovni rezultati. Na temelju spomenutih nalaza autori zaključuju, da ekspozicija olovu i otrovanje olovom mogu izazvati prolazna bubrežna oštećenja funkcionalne prirode. Čini se, da su u iznimnim slučajevima vrlo duge i visoke ekspozicije i opetovanih otrovanja moguće i organske lezije bubrega.The problem of the toxic effect of lead upon the kidney, in spite of numerous studies, has not as yet been fully solved. The report presented deals with the clinical observations of 54 lead poisoned patients. Lasting kidney changes in the form of chronic, progredient and diffuse nephropathy were observed in only 2 patients with an exposure to high lead concentrations during a period of 20 and 35 years respectively, and repeated lead poisonings. These two patients had no history of previous kidney disorders, and kidney injuries progressed with repealed lead poisonings. It may, therefore, be assumed that the lesions observed were due to lead action. 24 patients showed functional kidney alterations which were proved by the test of urine concentration, the phenolsulphthalein test, the urea clearance test, and the urea value in the blood. Urine showed no abnormality in these cases. In the authors\u27 opinion these functional changes mostly consist in altered intrarenal circulation due to the spastic effect of lead upon the blood vessels of the kidney and the direct toxic and indirect hypoxic effect of lead upon the tubules. The injuries of partial renal functions were as a rule reversible. In only 6 patients the blood pressure was increased. 2 patients with hypertension were those with progredient organic nephropaty. It seems most probable that in these two cases hypertension was nephrogenic in character. In one case high blood pressure was of the type of essential hypertension, but the relation between lead poisoning and hypertension in this case cannot be assumed with certainty. In other 3 patients hypertension was transitory in type, lasting only during the acute manifestations of lead poisoning. Functional kidney alterations tend to change according to the natural course of the disease. This is why it is not the same in which phase of the poisoning functional kidney tests are carried out. If this fact is neglected, divergent and contradictory results may be obtained. On the basis of these clinical findings the authors conclude that lead exposure and lead poisoning may cause kidney injuries. However, these changes are not uniform and cannot therefore be considered a clinical and nosologic entity usually called nephropathia saturnina. In the exceptional cases of a very long and high exposure to lead and repeated poisoning, progressive organic kidney changes may be expected. Otherwise, possible renal alterations and changes in the blood pressure are functional and reversible

First Report of 'Candidatus Phytoplasma solani' Infecting Parsnip in Serbia

The parsnip is a biennial plant native to Eurasia. During August and September 2016, typical phytoplasma yellows symptoms were observed on parsnip plants grown in Serbia. To our knowledge, this is the first report of phytoplasma infecting parsnip in Serbia

Temperature and magnetic field effects on the activity of protocerebral neurosecretory neurons and corpora allata in Cerambyx cerdo L. larvae

The effects of constant temperature and an extremely low-frequency magnetic field (ELFMF, 50 Hz and average induction of 20 mT) on the activity of medial protocerebral neurosecretory neurons (A1 and A2) and corpora allata were investigated in Cerambyx cerdo L. larvae after 30 days of exposure. Both constant temperature of 23°C and the ELFMF led to decrease in activity of A1 and A2 neurosecretory neurons and increase in activity of corpora allata compared to the control group (larvae from natural conditions). The changes are more pronounced in A2 than A1 neurons.Ispitivan je uticaj konstantne temperature i ekstremno niskofrekventnog magnetnog polja (ELFMF, 50 Hz i prosečna indukcija 20mT) na aktivnost medijanih protocerebralnih neurosekretnih neurona (A1 i A2) i corpora allata kod larvi Cerambyx cerdo posle 30 dana izlaganja i konstantna temperatura od 23°C i ELFMF dovode do smanjenja aktivnosti A1 i A2 neurosekretnih neurona i povećanja aktivnosti corpora allata u poređenju sa kontrolnom grupom (larve iz prirodnih uslova). Promene su više izražene kod A2 nego kod A1neurona.nul

Environmental Impact Assessment of the Nuclear Reactor in Vinca, Based on the Data on Emission of Radioactivity from the Literature - a Modeling Approach

Research activities of Vinca Institite have been based on two heavy water research reactors: a 10 MW one, RA, and zero power, RB. Reactor RA was operational from 1962 to 1982. In 2010, spent fuel has been sent to the country of origin, and the reactor now is in decommissioning. During the operational phase of the reactor there were no recorded accidental releases into the environment, only operational ones. Results of the environmental impact assessment of the assumed emission of radionuclides from the ventilation of nuclear reactor RA in Vinca to the atmospheric boundary layer are presented in this paper. Evaluation was done by using the Gaussian straight-line diffusion model and taking into account characteristics of the reactor ventilation system, the assumed emission release of radioactivity (from the literature), site-specific meteorological data for six-year period and local topography around nuclear reactor, and corresponding dose factors for inventory of radionuclides. Based on the described approach, and assuming that the range of appropriate meteorological data for six year period for the application of described mathematical model is enough for this kind of analysis, it can be concluded that the nuclear reactor RA, in the course of its work from 1962 to 1982, had no influence on the surrounding environment through the air above regulatory limits

The influence of dietary protein quality on midgut and brain proteins in Morimus funereus larvae

The response of starved Morimus funereus larvae refed with an artificial diet (Galford, 1967) was examined in the present paper. Larvae were offered diets varying in protein quality (soya protein, casein, and gelatin). Refeeding with the Galford diet (G I) and two modifications of it in which soya protein was supplemented with casein (G II) or gelatin (G III) led to an increase of body mass. Different protein quality in the nutritive substrate influenced both the quantity and quality of midgut and brain proteins.U ovom radu je ispitivan uticaj veštačke dijete po Galfordu (Galford, 1967) i njene dve modifikacije različitog proteinskog sastava (protein soje, kazein želatin) na larve Morimus funereus nakon totalnog gladovanja. Telesna masa larvi se povećala nakon ishrane dijetom po Galfordu (G I), kao i njenim modifikacijama u kojima je protein soje zamenjen kazeinom (G II) odnosno želatinom (G III). Prisustvo proteina različitog kvaliteta u hranljivom supstratu utiče i na kvantitet i na kvalitet proteina srednjeg creva i mozga larvi ove vrste.nul

The influence of dietary protein quality on midgut and brain proteins in Morimus funereus larvae

The response of starved Morimus funereus larvae refed with an artificial diet (Galford, 1967) was examined in the present paper. Larvae were offered diets varying in protein quality (soya protein, casein, and gelatin). Refeeding with the Galford diet (G I) and two modifications of it in which soya protein was supplemented with casein (G II) or gelatin (G III) led to an increase of body mass. Different protein quality in the nutritive substrate influenced both the quantity and quality of midgut and brain proteins.U ovom radu je ispitivan uticaj veštačke dijete po Galfordu (Galford, 1967) i njene dve modifikacije različitog proteinskog sastava (protein soje, kazein želatin) na larve Morimus funereus nakon totalnog gladovanja. Telesna masa larvi se povećala nakon ishrane dijetom po Galfordu (G I), kao i njenim modifikacijama u kojima je protein soje zamenjen kazeinom (G II) odnosno želatinom (G III). Prisustvo proteina različitog kvaliteta u hranljivom supstratu utiče i na kvantitet i na kvalitet proteina srednjeg creva i mozga larvi ove vrste.nul