Jela Ikanovic

Agro-ecological conditions and morpho-productive properties of buckwheat

The effect of different agro-ecological conditions on morpho- productive properties of buckwheat cultivar Novosadska was investigated during 2011-2012 at three different localities. The types of soil on which the experiments were conducted were as follows: the eutric cambisol - in Valjevo, the chernozem - in Nova Pazova and the grey forest soil in Nova Varos. Agro-ecological conditions affected the growth and productivity of the buckwheat crops at all three localities. The highest yields per unit area were obtained on the chernozem-type soil (1.65 t ha -1 ), while the average yields on the less fertile soils in the hilly and mountainous regions of Serbia were 1.31 t ha -1 on the grey forest soil and 0.80 t ha -1 on the eutric cambisol. The results showed that buckwheat can be successfully grown on different soil types, since the experiments on all locations were carried out without fertilization, i.e. using the natural fertility of the soil.

Prinos biomase i parametri kvaliteta suve materije odabranih populacija engleskog ljulja

Ispitivanja komponenti prinosa geneticki divergentnih populacija engleskog ljulja obavljena su na oglednom polju i u laboratorijama Poljoprivrednog instituta Republike Srpske u Banja Luci, tokom 2006., 2007. i 2008. godine. Korisceni materijali su potomstva autohtonih populacija engleskog ljulja, koje su sakupljene na sirem podrucju Republike Srpske, odnosno Bosne i Hercegovine. Nakon multiplikacije sjemena odabranih populacija, 2006. godine zasnovan je mikroogled. Za ova istraživanja korisceno je 7 populacija engleskog ljulja, i to: Banjaluka, Kosjerovo, Laminci, Kobatovci, Kobas, Delibasino selo i Sarajevo. Tokom trogodisnjih istraživanja analizirana su slijedeca svojstva: a) prinos zelene biomase; b) prinos suve materije; c) hemijski sastav suve materije u prvom otkosu; d) prinos sirovih proteina.Na osnovu trogodisnjih ispitivanja prinosa zelene biomase i suve materije, po visini i stabilnosti prinosa, istice se populacije Banjaluka. Populacija Delibasino selo je u prvom otkosu suve materije imala najvisi prosjecan sadržaj sirovih proteina i najniži sadržaj sirove celuloze. Najvisi prosjecan prinos sirovih proteina tokom ovih ispitivanja ostvaren je sa populaciom Sarajevo.

Soybean oil yield as affected by the growing locality in agro-climatic divergent years.

The subject of this study are two-year results of the oil yield of six NS soybean genotypes, 0 and I maturity group (MG) at two growing localities (Rimski Sancevi and Sombor in Serbia). Sombor had higher oil yield than Rimski Sancevi (by 119 kg ha -1 , i.e. 15.97%). In the locality of Sombor, in 2010, of the oil yields were statistically significantly higher (1.088 kg ha -1 ) compared to 2009 (640 kg ha -1 ), which is higher by 448 kg ha -1 or 70% of the average oil yield in 2009. The average oil yield, for all tested genotypes at both locations was 805 kg ha -1 , and ranged from 745 kg ha -1 (Rimski Sancevi) to 864 kg ha -1 (Sombor). At both sites significantly higher oil yield was recorded in 2010 compared to 2009. The highest average oil yield at both sites was achieved growing genotype Sava (840 kg ha -1 ). Sava had highest oil yield (887 kg ha -1 ) and Balkan (902 kg ha -1 ) in locality of Sombor. On average for both genotypes and growing localities I MG had higher average oil yield of 29 kg ha -1 ( 3.67%) than 0 MG genotypes. Realizing the potential for soybean productivity depends on genetic factors, the cultural practice implemented, meteorological conditions and the growing localities.

AN AGRO-TECHNOLOGICAL CHARACTERIZATION OF SOUTH-EASTERN EUROPEAN BROOMCORN LANDRACES

Comprehensive overview of the extent genetic diversity in South-East European landrace collection was estimated regard broadening of broomcorn (Sorghum bicolor [L]. Moench) germplasm variability. In a long-term field trials 28 accessions were analyzed to determine variability of agronomic (unthreshed panicle weight UTP, threshed panicle weight TRP, grain yield per panicle SWG and threshed panicle ratio RAN), morphological (plant height PHG, stalk height SHG, panicle length PLG, peduncle length PDL, flag leaf sheath length LSL and panicle exsertion PEX) and technological (fiber length FLG, fiber number per panicle NOP and fiber fineness FFI) traits. By all obtained results combining over univariate and multivariate analysis, the study showed significant variability over traits, so the examined landraces will be included in existing broomcorn germplasm. Accessories with valuable quantitative and qualitative characters can significantly contribute to improvement of new bred cultivars and broadening germplasm diversity. Three years field experiment showed significant positive correlations between PHG-SHG, PDL-PEX and UTP-SWG and significant negative correlations between PDL-FLG and SWG-RAN. The performance of examined landraces were generally within the ambit of broomcorn germplasm variability, but several accessions with the extreme trait profile for yield components and panicle quality will be useful as parents in the breeding process.