Agronomical, chemical, technological and smoking characteristics of Burley tobacco experimental lines and hybrids

Abstract

Based on the results of investigations of Burley experimental lines and hybrids the following could be concluded: (1) they have stabilized morphological, chemical and technological properties as well as smoking properties; (2) they are characterized by unfavorable technological properties as compared to reference samples, especially regarding the filling power; (3) the chemical composition of the samples investigated is not different from values characteristic for Burley tobacco. The differences are tolerable; (4) there is a low nicotine content in smoke but a high TPM production of the smoke; (5) the disharmonious smoke along with alcality of the smoke are undesirable from the point of view of smoking characteristics. All the results presented show that the usability value of the Burley experimental lines and hybrids investigated is bellow the level of reference samples, first of all because of insufficient porosity of the leaf as well as of presence of some chemical components in the leaf. However, in respect of global characteristics, the Burley experimental lines and hybrids do not differ significantly from the reference samples. The defects mentioned could be the result of inadequate processing of the leaves. It means that parallel to the breeding, it is necessary to examine the optimal conditions of drying and redrying. It could be concluded, that the further breeding must consider the improvement of the texture of the leaf as well as the uptake from the soil of some elements effecting the formations of certain precursors in the leaf.

U 2004 i 2005. godini ispitane su eksperimentalne linije i hibridi duvana tipa berlej oplemenjeni u okviru programa rada na unapređenju proizvodnje duvana u Naučnom institutu za ratarstvo i povrtarstvo Novi Sad. U poljskom ogledu je utvrđen prinos lista, a na bazi uzoraka u laboratoriji su analizirana hemijska svojstva (pH, sadržaj nikotina, sadržaj ukupnog azota, azot proteina, sadržaj rastvorljivih šećera, sadržaj pepela i sadržaj polifenola), tehnološka svojstva (debljina lista, procenat glavnog nerva, vododržna sposobnost i moć punjenja cigareta) i svojstva na pušenju (degustacija, sadržaj nikotina u dimu i ukupna čestična faza dima). Na osnovu ovih analiza određena je upotrebna vrednost eksperimentalnih linija i dvolinijskih muško-sterilnih hibrida duvana tipa berlej.