SVIBOR - Project code: 4-01-035


Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69


SVIBOR - Collecting Data on Projects in Croatia

Project code: 4-01-035


Main researcher: VULETIĆ, NIKOLA (53995)

Type of research: applied
Duration from: 04/30/91. to 12/11/98.

Papers on project (total): 202
Papers on project quoted in Current Contents: 16
Institution name: Duhanski institut, Zagreb (92)
Department/Institute: Tobacco Institute Zagreb
Address: 10000 Zagreb, Planinska 1, Hrvatska
City: 10000 - Zagreb, Croatia
Phone: 385 (0)1/228-222;228-225;219-154
Fax: 385 (0)1/2332-850

Summary: Extensive research on breeding materials, cultivars and lines of bright Virginia and Burley tobacco resistant to diseases, especially PVY, blue mould, and tobacco mosaic virus, of an acceptable quality and yield, was carried out over a five-yearperiod, i.e. in 1991, 1992, 1993, 1994 and 1995. To determine the optimum ecological condition for flue-cured tobacco crop rotation was investigated by means of a stationary experiment on six plots with crops important for northern Croatia.The experiment included cultivar methods with irrigation and in dry conditions. The tobacco/soil nutrient dynamics was observed for nitrogen, potassium and phosphorus, as well as for some micronutrients. The reduced application of tobacco pesticides was investigated by exact and demonstration experiments, as well as by determining pesticide residues. The impact of tobacco herbicides on other crops was determined by varying the method of application, the time of application, and the quantity. The chemical composition of all the breeding materials and the materialsfrom the other field experiments was determined and compared to the standard, or the dynamics of particular components was observed.Apart from classical methods in the process of tobacco breeding, the more recent methods of tissue culture and the haploid technique were introduced successively in order to shorten the duration of the breeding process. In the case of the newly created lines of Virginia tobacco, the nicotine and tar content in the smoke of experimental cigarettes were observed. Procedures by which the tar and nicotine content in cigarette smoke can be reduced by as much as 80% were established. Research was carried out on the impact of the way in which agriculture is organized in the flue-cured tobacco production, and the most favourable ways of organizing national tobacco industry and the tobacco market were investigated.

Keywords: tobacco, flue-cured, burley, plant breeding haploids cultivation, crop rotation, nutrient uptake, nicotine, tar reduction, tobacco disease resistance, agrarian structure

Research goals: Up-to-date production of Burley and Virginia type tobacco is incompatible with the lack of organization and the extensive growing technology now prevailing in northern Croatia. The tendency world wide, as well as in the EU, is to use breeding and growing methods to get bodied tobacco cultivars with a high content of desirable components but with a lower level of tar and nicotine in smoking, thus reducing the health hazard. This is the goal of this research. Therefore the scientific research performed as part of this project has to be applicable in practice. This will not reduce the scientific value of the results obtained. A number of exact field experiments will be set up in the growing area to investigate problems related to the growing method, crop rotation, the dynamics of water and nutrients, the methods of cultivation, curing, and pesticides application. A special series of field experiments will be the basis of work on breeding in the classical way or by the methods of tissue culture and haploids. The results will be verified statistically and confirmed or extended by a number of chemical analyses and investigations. The newly created cultivars will be applied in production and tested further.

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Last update: 10/09/95