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Loose head packing is a frequent problem in cabbage production. This undesirable characteristic is typically attributed to the cabbage itself, when it is grown under unfavorable conditions and when it receives poor cultivation practices. Because of market demand on one side and weather conditions and cultivation practices on the other, cabbage is mainly harvested in a single turn. Furthermore, the harvested heads are not handled with due care. In other words, correct choice and application of cultivation practices may greatly improve head packing in the cabbage. Rastresitost ili slaba zbijenost glavica je problem na koji svaki proizvođač kupusa nailazi tokom proizvodnje. Često se ovo nepoželjno svojstvo pripisuje samom kupusu, koji više puta raste u manje povoljnim uslovima uz nepotpunu agrotehniku, što ima za posledicu slabiju zbijenost. Na jednoj strani zbog tržišta, na drugoj zbog vremenskih uslova i agrotehnike, berba kupusa se uglavnom obavlja jednokratno. Takođe, sa manje pažnje se manipuliše glavicama. Kad se svi ovi faktori saberu, glavica kupusa jednostavno nema optimalne uslove za pravilno formiranje, zbog čega se agrotehnika mora prilagoditi svakoj fenofazi rasta kupusa, a posebno periodu zavijanja glavice i berbe, kad je zbijenost glavice pri kraju formiranja.

The objective of this paper was to determine the genetic mode of inheritance of quantitative traits in cabbage via regression analysis in complete diallel crossing.The regression analysis of head mass traits showed that the regression line was distant from the limiting parabola, indicating nonadditive gene action in head mass inheritance. The expected line of regression intersected the Wr axis below the coordinate origin, confirming the presence of superdominance in this inheritance. As useful head part mass comprises the bulk of total head mass, the regression analysis results were similar. The regression line was also far from the limiting parabola indicating nonadditive gene action in this trait's inheritance. Similarly the regression line intersected the Wr axis below the origin, suggesting we had a case of superdominance in the inheritance of this trait as well.

Used in this study were seven divergent cabbage cultivars, which we crossed using the complete diallel cross method. The traits we analyzed are important for further selection and were actually chosen based on this. The study's results showed the traits to be significantly divergent, which represents a significant source of variability for the next cycle of selection. The predominant mode of inheritance of head mass and the edible portion of the head was superdominance. Variation of these two traits was prominent in both the parents and the hybrids, the primary reason being the differences in earliness of maturity. Yield once again proved to be a complex trait, varying in the parents and the hybrids alike. The variability of yield was much larger in the hybrids than in the cultivars. Superdominance occurred 23 times. Sedam divergentnih sorti kupusa, dobijenih metom potpunog dialelnog ukrštanja, korišćeno je u ovom istraživanju. Analizirana svojstva su važna za dalju selekciju i stoga su i izabrana. Dobijeni rezultati pokazuju da su svojstva značajno divergentna što predstavlja važan izvor varijabilnosti za sledeće cikluse selekcije. Superdominantnost je prevashodni način nasleđivanja mase glavice i jestivih delova glavice. Variranje ova dva svojstva bilo je značajno kako kod roditelja tako i kod hibrida što je i osnovni razlog razlike u ranostasnosti. Prinos se još jednom pokazao kao složeno svojstvo, koje podjednako varira kako kod roditelja tako i kod hibrida. Varijabilnost prinosa bila je mnogo veća kod hibrida nego kod kultivara. Superdominantnost se javila 23 puta.