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Bottle gourd [Lagenaria siceraria (Molina) Standl.] is one of the most interesting species in the plant kingdom, due to the diversity of fruit shapes, sizes and ways of use. Warty genotypes are rare compared to non warty genotypes. Considering unusual external appearance of warty fruits, we focused our research on the investigation of its inheritance patterns. By crossing different bottle gourd phenotypes, we studied the mode of inheritance and identified and verified genes responsible for the fruit skin color and warty phenotype segregation. Two parental lines, LAG 70 (with warty fruit of light green color) and LAG 71 (smooth fruit, variegated), F1, F2 and backcrosses populations along with both parents were evaluated. Genetic analysis indicated that warty fruit type is a result of monogenic inheritance, whereby the warty fruit type is dominant (Wt) trait over to the non-warty fruit type (wt). The mode of inheritance of fruit color was controlled by recessive epistasis, with a ratio of 9 variegated (A-, B-), 3 dark green colored (aaB-) and 4 light green colored (aabb) fruits in the F2 generation.

Species from Cucurbitaceae family are not widely present in Serbia, although because of their morphological and decorative features deserve more attention. The aim of this paper was to study the morphological variability and usage of ten species of the Cucurbiataceae family. Based on genetic variability, species were grouped into 8 clusters. Fruit characteristics of most investigated species showed great similarity and the greatest differences were attained for flower and fruit characteristics. The longest was the fruit of Trichosanthes cucumerina (46.2 cm), while the shortest of Cucumis myriocarpus (3.4 cm) which had the smallest circumference as well (4.4 cm). The largest circumference of fruit was recorded for the species Cucumis aculeatus (16.4 cm). In terms of fruit color Momordica balsamina had a red fruit, allocated from other species whose fruits were in various shades of green. Variability is reflected in large variations in size, shape and color of fruit. Considerating that usages of these species are multiple (food for humans and animals, ornamental) studyed species deserve special attention in their further propagation and use.

The two most important criteria for introducing new confectionary hybrids into production are high seed and protein yield. That is why it is important to find the traits that are measurable, and that at the same time show a strong correlation with seed and protein yield, so that they can be used as a criteria for confectionary hybrid breeding. Results achieved during 2008 at the locations Rimski Šančevi (Region of Vojvodina) and Kula (Central Serbia) show that the new confectionary hybrids are expressing higher seed yields in comparison to standards (Vranac and Cepko) though with a lower seed oil content. A very strong positive correlation was determined between seed yield and seed protein content, kernel content and mass of 1000 seeds. A very strong positive correlation was determined between seed protein content, seed yield and mass of 1000 seeds, with protein yield. This indicates that seed yield, seed protein content and mass of 1000 seeds have a high influence on protein yield. The degree of interdependence between different traits is a sign of direction which is supposed to facilitate better planning of sunflower breeding program. Dva najznačajnija kriterijuma za uvođenje novih konzumnih hibrida u proizvodnju su visok prinos semena i proteina. Zato je važno pronaći osobine koje su merljive, a istovremeno ispoljavaju jaku korelaciju sa prinosom semena i proteina tako da se mogu koristiti kao kriterijumi za oplemenjivanje konzumnih hibrida. Postignuti rezultati u toku 2008. godine na lokalitetima Rimski Šančevi (region Vojvodina) i Kula (uža Srbija) pokazuju da novi hibridi konzumnog tipa postižu veće prinose semena u poređenju sa standardima (Vranac i Cepko) uz smanjenje sadržaja ulja. Utvrđena je veoma jaka pozitivna korelacija između prinosa semena i sadržaja proteina u semenu, sadržaja jezgra, mase 1000 semena. Pozitivna veoma jaka korelacija konstatovana je između sadržaja proteina u semenu, prinosa semena i mase 1000 semena sa prinosom proteina. To pokazuje da prinos semena, sadržaj proteina u semenu i masa 1000 semena imaju visok uticaj na prinos proteina. Stepen međuzavisnosti između različitih osobina je putokaz koji treba da omogući bolje planiranje programa za oplemenjivanje suncokreta.

This paper deals with interrelationship between grain yield and some physiological parameters of wheat plant nitrogen nutrition efficiency as well as interrelationships between these parameters and some yield related traits (biological yield, grain harvest index). The aim of such investigation is to affirm possibilities of using physiological parameters of wheat plant nitrogen nutrition efficiency as criterions in breeding on its grain yield. The investigation, conducted as three years field trials, included 30 wheat cultivars and perspective lines. There were studied: nitrogen content in the above - ground part of plant at anthesis, in grain, in straw and total nitrogen content at maturity, nitrogen harvest index, nitrogen reutilization, post - anthesis nitrogen accumulation and physiological efficiency of nitrogen. The positive and statistically high significant relationships between nitrogen content in the above - ground part of plant at anthesis, in grain and in straw, total nitrogen content at maturity, nitrogen reutilization and post - anthesis accumulation as physiological parameters and grain yield were registered in investigated material. Most of listed parameters, important by grain yield aspect, can be studied easily and measured before wheat vegetative period ends. The investigated parameters can be recommended as criterions for selecting of parental pairs and evaluating progeny in breeding of wheat on grain yield, considering to their determined interrelationships and their measurability. U radu je razmatrana mogućnost korišćenja fizioloških parametara, koji se odnose na efikasnost ishrane pšenice azotom, kao kriterijuma u oplemenjivanju na prinos zrna, na osnovu njihove međuzavisnosti i uticaja na neke osobine povezane sa prinosom zrna pšenice (biološki prinos, žetveni indeks zrna). Istraživanje je izvedeno kao trogodišnji poljski ogled i uključivalo je 30 sorti i perspektivnih linija pšenice. Od fizioloških parametara proučavani su: sadržaj azota u nadzemnom delu biljke u cvetanju, sadržaj azota u zrnu i slami, ukupni sadržaj azota u zreloj biljci, žetveni indeks azota, reutilizacija i prirast azota i fiziološka efikasnost azota. Utvrđena je pozitivna i statistički visoko značajna korelacija između prinosa zrna i skoro svih ispitivanih fizioloških parametara: sadržaja azota u biljci, u cvetanju, zrnu, slami, ukupnog sadržaja azota u zreloj biljci, reutilizacije i prirasta azota. Imajući to u vidu, kao i njihovu merljivost i jednostavnost u izračunavanju, navedeni fiziološki parametri mogu se preporučiti kao kriterijumi za odabir roditeljskih parova i ocenu potomstava u oplemenjivanju pšenice na prinos zrna.

Gorjanovic B., M. Zoric, and M. Kraljevic Balalic (2010): Effect of nitrogen rate on grain yield of bread wheat genotypes. - Genetika, Vol 42, No. 2, 279 -286. The improvement in grain yield is the main objective of bread wheat breeding programs. Numerous studies indicate that nitrogen is the key factor of yield and quality in the wheat. The goal of this paper is to investigate variability of grain yield, of twelve bread wheat genotypes, on three nitrogen level. ANOVA showed that this trait was mostly under influence of the genotype (36, 3%), year x genotype interaction (26, 3%), year of investigation (14, 1%), and in the smallest amount of the nitrogen rate (8, 8%). On all three nitrogen level, the highest grain yield was found in the variety Malyska. The lowest grain yield in control was found in the variety Nevesinjka, while in the N75 and N100 rates it was found in the variety Tamaro. The mean performance of individual cultivars, in nine environments (three years x three nitrogen rates), was depicted using which-won-were view of SREG2 biplot. The nine environments fall into two sectors, which is an indication of a strong crossover GE interaction. Genotype Malyska was the winner (the highest yielding variety) in first sector containing seven environments, while genotypes Pertrana and Axis were the winners in second sector containing two environments.

Boron (B) deficit as well as excess may significantly limit the organic production in plants. In extreme cases they may kill the affected plants. Boron excess occurs primarily in arid and semiarid regions, in saline soils or in consequence to human action. Excessive boron concentrations retard plant growth and cause physiological and morphological changes (chlorosis and necrosis) first of all in leaf tips and then in marginal or intercostal parts of the lamina. Physiological mechanisms of plant tolerance to boron excess have not been studied in sufficient detail. The predominant opinion holds that they are based on restricted uptake and accumulation of boron in the root and aboveground plant parts. Significant differences in boron excess tolerance have been observed not only between different crops but even between different genotypes of the same crop. This has enabled the breeding of crop genotypes and crops adapted to growing on soils rich in available boron and intensified the research on the inheritance of plant tolerance to high B concentration. Sources of tolerance to high B concentration have been found in many crops (wheat, mustard, pea, lentil, eucalypt). Using different molecular techniques based on PCR (RAPD, SRAP), plant parents and progenies have been analyzed in an attempt to map as precisely as possible the position of B-tolerant genes. Small grains have been studied in greatest detail for inheritance of B tolerance. B tolerance in wheat is controlled by at least four additive genes, Bo1, Bo2, Bo3 and Bo4. Consequently, there exists a broad range of tolerance levels. Studies of Arabidopsis have broadened our understanding of regulation mechanisms of B transport from roots to above ground parts, allowing more direct genetic manipulations.

Grain yield of wheat is dependent on grain weight, which is the result of grain filling duration and rate. The study was undertaken to examine the relation between grain weight and rate and duration of grain filling in five high-yielding NS wheat cultivars. Stepwise multivariate analysis of nonlinear regression estimated grain filling parameters was used to examine cultivar differences in grain filling. On the basis of three-year average, the highest grain dry weight had cultivar Renesansa, and the lightest grains were measured for cultivar Evropa 90. Stepwise multivariate analysis indicated that all three nonlinear regression estimated parameters (grain weight, rate and duration of grain filling) were equally important in characterizing the grain filling curves of the cultivars studied, although sequence of their significance varied in different years, which is probably caused by different environmental conditions in three years of experiment. Prinos pšenice zavisi od mase zrna, koja je rezultat dužine i intenziteta nalivanja zrna. Cilj rada je bio ispitivanje veza između mase zrna i intenziteta i dužine nalivanja zrna kod pet visokoprinosnih NS sorti pšenice. Stepnjise multivarijaciona analiza nelinearnom regresijom procenjenih parametara nalivanja zrna je upotrebljena da se ispitaju razlike među sortama u pogledu nalivanja zrna. U trogodišnjem proseku je najveću masu zrna imala sorta Renesansa dok su najlakša zrna izmerena kod sorte Evropa 90. Stepnjise multivarijaciona analiza je pokazala da su sva tri nelinearnom regresijom procenjena parametra (masa zrna, intenzitet i dužina nalivanja zrna) jednako značajna za karakterizaciju krivih nalivanja zrna proučavanih sorti, mada je redosled značajnosti varirao u različitim godinama. Ovome su verovatno uzrok različiti uslovi sredine kojima su proučavane sorte bile izložene tokom tri godine eksperimenta.

The main reason that makes breeding for the main yield components difficult is that they are in negative correlation with each other. Numerous researchers have studied relations between yield and different yield components in order to find dependable selection criteria. The goal of this paper is to estimate the variability and correlations between yield components. The experiment was conducted on twelve durum wheat genotypes. Plant height was in both years positively correlated with number of spikelets per spike and negatively correlated with spike length. grain weight per spike. number of grains per spike and harvest index. Spike length was positively correlated with grain weight per spike and number of grains per spike. in both years and with harvest index only in the first year. while it was negatively correlated with number of spikelets per spike in the first year. Number of spikelets was in negative correlations with grain weight per spike and number of grains per spike in the first year and with harvest index in both years of investigations. Grain weight per spike was positively correlated with number of grain per spike and harvest index in both years. Number of grains per spike was in positive correlation with harvest index in both years of investigations.

Using the line x tester analysis (Sing and Choudhary, 1979), we studied the combining ability, gene effects and mode of inheritance of plant height and spike length, using 5 females, 3 testers and 15 F] hybrids of wheat. The mode of inheritance of characters under study depended on the cross combination and the year of growing. In most cases the mode of inheritance was dominant. Estimation of the genetic components of variation as well as ratio of GCA/SCA showed that plant height in the first year and spike length in the second year of research were predominantly controlled by additive gene action. Non-additive gene effects have been found to be more important than additive ones in the inheritance of plant height in the second year and spike length in the first year of research. The estimates of general combining ability (GCA) pointed out that the best general combiner for the plant height in the first year was line NS 31/96, while in the second year the best combiner was variety Fundulea 490. For the spike length the best general combiner in the both years was line NS 31/96. The line NS 31/96 was the best general combiner in this research and it can be used in wheat breeding.

The development of new high-yielding and stable sunflower hybrids based on interspecific hybridization requires information on the heterotic effects for agronomically important traits in the F, generation. Heterotic effects for seed yield, plant height and head diameter were studied in interspecific sunflower hybrids developed by the line x tester method. The female inbred lines were developed by interspecific hybridization, while the male restorer inbreds with good combining abilities were used as testers in the form of fertility restorers. F, hybrids were obtained by crossing each tester with each female inbred. The inbred lines and their F, hybrids differed significantly in their mean values of the traits under study. Heterosis values for seed yield per plant were positive and highly significant relative to both the parental mean (98.4-274.1%) and the better parent (54.8-223.2%). Significantly less heterosis was recorded in the case of plant height relative to parental mean (19.0-66.0%) and better parent (-3.9-51.6%). With head diameter, the heterotic effect ranged from 19.0 to 55.6% (parental mean) and from 7.8 to 36.6% (better parent). The results of this study may be used for the development of new high-yielding and stable sunflower hybrids based on interspecific hybridization. Stvaranje visoko prinosnih i stabilnih hibrida suncokreta na bazi interspecijes hibridizacije zahteva posedovanje informacije o efektu heterozisa za agronomski važna svojstva u F, generaciji. Efekat heterozisa za prinos semena. visinu biljke i prečnik glave proučavan je kod interspecijes hibrida nastalih ukrštanjem primenom linija x tester metoda. Inbred linije majke nastale su interspecijes hibridizacijom, a restorer inbred linije oca dobrih kombinacionih sposobnosti korišćene su kao testeri u formi restauratora fertilnosti. Hibridi F1 generacije nastali su ukrštanjem svakog testera sa svakom inbred linijom majke. Vrednosti heterozisa za prinos semena po biljci bile su pozitivne i visoko značajne u odnosu na roditeljski prosek (98.4-274.1%) i u odnosu na boljeg roditelja (54.8-223.2%). Znatno niži efekat heterozisa ustanovljen je za visinu biljke (19.0-66.0%) u odnosu na roditeljski prosek i u odnosu na boljeg roditelja (6.1-51.6%). Kod prečnika glave vrednosti heterozisa su se kretale od 19.0% do 74.7% u odnosu na roditeljski prosek i od 11.6-36.6% u odnosu na boljeg roditelja.

Grain yields of wheat (Triticum aestivitm L) are influenced partly by final grain dry weight, which is largely determined by the rate and duration of the grain filling process. A study was undertaken to compare the observed final grain dry weight of five groups of wheat genotypes differing in earliness (extra early, medium early, medium late, late and a control group of high yielding NS cultivars) with the observed duration and average and maximum rates of grain filling in two different environments. Correlation coefficients were used to determine which grain filling parameter had more influence on final grain dry weight, in an environment common for our country (2002), final grain dry weight was strongly positively correlated with the average and maximum rates and strongly negatively correlated with the duration of grain filling. The medium late and control groups had the highest final grain dry weights. Correlations between final grain dry weight and the duration and average rate of grain filling were positive in an unfavorable environment (2001). The NS cultivars and extra early genotypes had the highest final grain dry-weights. The rate and duration of grain filling are usually negatively correlated. The influence of grain filling parameters on final grain dry weight is not the same in different environments, so the ability of the genotype to compensate for the low grain filling rate with grain fill prolongation in unfavorable environments might be more important. The observed average grain filling rate is probably more important as a parameter for describing these processes than the maximum one. Prinos zrna pšenice (Triticnm aestivum L) je delom uslovljen krajnjom masom suvog zrelog zrna. koja je u velikoj meri određena intenzitetom i dužinom trajanja procesa nalivanja zrna. Cilj istraživanja je poređenje eksperimentalno utvrđene krajnje mase suvog zrelog zrna 5 grupa genotipova pšenice različite ranostasnosti (ekstra rane, srednje rane, srednje kasne kasne i kontrolna grupa najprinosnijih NS sorti) sa eksperimentalno utvrđenim prosečnim i maksimalnim intenzitetom, te dužinom trajanja nalivanja zrna u različitim uslovima sredine. Korelacioni koeficijenti su upotrebljeni u pokušaju da se odredi koji parametar nalivanja zrna ima veći uticaj na krajnju masu suvog zrelog zrna. U kod nas uobičajenim uslovima sredine (2002) je krajnja masa suvog zrelog zrna bila u jakim pozitivnim vezama sa prosečnim i maksimalnim intenzitetom i u jakoj negativnoj vezi sa dužinom trajanja nalivanja zrna. Najveće krajnje mase suvih zrelih zrna postigli su srednje kasni i genotipovi kontrolne grupe. Korelacije između krajnje mase suvog zrelog zrna i dužine trajanja, te prosecnog intenziteta nalivanja zrna su bile značajno pozitivne u nepovoljnim uslovima sredine (2001). Novosadske sorte i ekstra rani genotipovi su imali najveće mase suvih zrelih zrna. Intenzitet i dužina trajanja nalivanja zrna su obično u negativnoj korelaciji. Uticaj parametara nalivanja zrna na krajnju masu suvog zrelog zrna nije jednak u različitim uslovima sredine, tako da bi mogla biti bitnija sposobnost genotipa da u nepovoljnim uslovima sredine niske intenzitete nalivanja zrna nadomesti produženjem akumulacije suve materije. Za opisivanje ovih procesa bi prosečni intenzitet nalivanja zrna mogao biti važniji parametar od maksimalnog.

The main goals of sunflower breeding in Yugoslavia and abroad are increased seed yield and oil content per unit area and increased resistance to diseases, insects and stress conditions via an optimization of plant architecture. In order to determine the mode of inheritance, gene effects and correlations of total leaf number per plant, total leaf area and plant height, six genetically divergent inbred lines of sunflower were subjected to half diallel crosses. Significant differences in mean values of all the traits were found in the F1 and F2 generations. Additive gene effects were more important in the inheritance of total leaf number per plant and plant height, while in the case of total leaf area per plant the nonadditive ones were more important looking at all the combinations in the F1 and F2 generations. The average degree of dominance (Hi/D)1/2 was lower than one for total leaf number per plant and plant height, so the mode of inheritance was partial dominance, while with total leaf area the value was higher than one, indicating super dominance as the mode of inheritance. Significant positive correlation was found: between total leaf area per plant and total leaf number per plant (0.285*) and plant height (0.278*). The results of the study are of importance for further sunflower breeding work. Oplemenjivanje suncokreta u svetu i kod nas usmereno je na povećanje prinosa semena i sadržaja ulja po jedinici površine, otpornosti prema bolestima insektima i stresnim. uslovima optimalizacijom arhitekture biljke. U cilju utvrđivanja načina nasleđivanja, efekta gena i međuzavisnosti ukupnog broja listova po biljci, ukupne lisne površine po biljci i visine biljke, izvršena su dialelna ukrštanja isključujući recipročna sa šest genetski divergentnih inbred linija suncokreta. Dobijene su signifikantne razlike u srednjim vrednostima za sva ispitivana svojstva F1 i F2 generaciji. Aditivni efekat gena je bio od većeg značaja u nasleđivanju ukupnog broja listova po biljci i visini biljke dok je neaditivni efekat gena bio značajniji kod ukupne lisne površine po biljci uzevši u obzir sve kombinacije ukrštanja u F1 i F2 generaciji. Prosečan stepen dominacije (H1/D)1/2 je kod ukupnog broja listova po biljci i visine biljke manji od jedinice iz toga se može zaključiti da je način nasleđivanja parcijalna dominacija, a kod ukupne lisne površine je veći od jedinice što ukazuje na superdominaciju. Značajna pozitivna međuzavisnost ustanovljena je između ukupne lisne površine po biljci i ukupnog broja listova po biljci (0.285*), visine biljke (0.278*). Rezultati ovih istraživanja imaće značaja u daljem radu na oplemenjivanju suncokreta.

Sunflower is the main crop species for the production of edible oil in many countries of the world, including ours. Plant height and head size, form and position on the stem as well as the number of leaves, their size, duration and distribution on the plant all play an important role in defining optimal plant architecture in sunflower hybrids (Škorić, 1975, 1989, 2002). In order to monitor the mode of inheritance and gene effects for head diameter in the F1 and F2 generations, half diallel crosses were made in six genetically divergent sunflower inbreds. The mean values of the trait in question differed significantly. The mode of inheritance of head diameter in the F1 generation was superdominance in all but four crosses, which had dominance instead. In the F2 generation, on the other hand, the prevailing mode was dominance, while superdominance was recorded in four cases. The dominant component accounted for the bulk of genetic variance, and the mode of inheritance of head diameter taking into account both the F1 and F2 generations was superdominance. These findings may prove valuable for developing high-yielding sunflower genotypes. Suncokret je u mnogim zemljama u svetu i kod nas osnovna biljka za proizvodnju jestivog ulja. Visina biljke, veličina, forma i položaj glave na stablu, broj listova, njihova veličina, trajanje i raspored na biljci imaju važnu ulogu u definisanju optimalne arhitekture hibrida suncokreta (Škorić 1975; 1989; 2002). U cilju praćenja načina nasleđivanja i efekta gena prečnika glave suncokreta u F1 i F2 generaciji izvršena su dialelna ukrštanja isključujući recipročna sa šest genetski divergentnim inbred linijama suncokreta. Dobijene su značajne razlike u srednjim vrednostima za ispitivano svojstvo. Prečnik glave se u F1 generaciji nasleđivao superdominantno jedino se u četiri ukrštanja javila dominacija, dok se u F2 generaciji nasleđivao dominantno, a superdominacija se zadržala u četiri kombinacije. Glavni deo genetske varijanse čini dominantna komponenta, a način nasleđivanja prečnika glave je superdominacija uzevši u obzir sve kombinacije ukrštanja u obe generacije (F1 i F2). Ova istraživanja mogu biti od značaja u stvaranju visoko prinosnih genotipova suncokreta.

The heritability, phenotypic variability and components of variance for spike length and number of spikelets per spike have been studied in 50 cultivars from different selection centers all over the world. The experiment was performed in randomized block design in three replications on the experimental field in two years. A total number of 60 plants have been analyzed in the full maturity stage. Average estimated values of spike length and number of spikelets per spike differed significantly among years and among cultivars. The highest average value of spike length had Mironovskaya 808 cultivar (x =14.5 cm), and the lowest value was found in Etoille de Choisy (x=8.1 cm) and San Pastore cultivar (x=8.2). During investigated periods the highest average value for number of spikelets/spike had Sava cultivar (x=28.2), and the lowest value expressed Frontana cultivar (x=19.2). The average variation coefficient for spike length was 8.0%, and for number of spikelets per spike was 7.5%. The lowest variability for spike length was established in Pernel cultivar (V=4.8%) and the highest in Lepenica cultivar (V=12.9%). The coefficient of variation for number of spikelets per spike ranged from 4.7% in Bankut 1205 to 12.4% in Norin 10 cultivar. The obtained herita bility values in broad sense were fairly high for spike length (96.4%) and number of spikelets per spike (79.1%). Phenotypic analysis of variance indicated that genetic variance took a larger portion of the total phenotypic variability for spike length (81.82%) and for number of spikelets per spike (57.36%) than influence of environmental factors on expressing of analyzed yield components. U radu je proučavana genetička i fenotipska varijabilnost dužine klasa i broja klasića po klasu kod 50 genetički divergentnih sorti pšenice. Istraživanja su obavljena u poljskom ogledu izvedenom po slučajnom blok sistemu u tri ponavljanja, tokom dve godine. Analize su uradjene na uzorku od 60 biljka u punoj fazi zrelosti. Utvrdjene su signifikantne razlike za dužinu klasa i broj klasića po klasu izmedju sorti i godina. Najveća vrednost dužine klasa ustanovljena je kod sorte Mironovskaya 808 (14,5 cm), a najmanja kod sorti Etoille de Choisy (8,1 cm) i San Pastore (8,2 cm). Sorta Sava je imala najveći broj klasića po klasu (28,2), a najmanja vrednost za ovo svojstvo utvrdjena je kod Frontane (19,2). Prosečna varijabilnost dužine klasa (V = 8,0%) i broja klasića po klasu (V = 7,5%) bila je dosta niska. Najmanju varijabilnost za dužinu klasa ispoljila je sorta Pernel (V = 4,8%), a za broj klasića po klasu sorta Bankut 1205 (V = 4,7%). Utvrdjena je visoka vrednost za heritabilnost u širem smislu za dužinu klasa (h2 = 96,4%), a nešto niža vrednost za broj klasića po klasu (h2 = 79,1%). Analizom komponenti fenotipske varijanse ustanovljeno je da genetički faktori imaju veći udeo u ispoljavanju dužine klasa (81,82%) i broja klasića po klasu (57,36%) od faktora spoljne sredine

We analysed the grain yield and quality in common vetch accessions to assess their breeding potential. A small-plot trial was carried out in 2005 and 2006 at the experimental field of the Institute of Field and Vegetable Crops at Rimski Sanevi. 14 accessions, of diverse geographic origin and status, from the Novi Sad Vicia collection were tested. The highest grain yield was in accession VIC 006 (2205 kg ha(-1)), while the highest grain dry matter crude protein was in accession Topaze (329 g kg(-1)). Significant positive correlations were found between the time from sowing to harvest and grain dry matter crude protein content (r(gxy) = 0.754). A cluster analysis of the tested common vetch accessions showed four main groups that are assumed to correlate with geographic and biological origin. The variability measured offers a basis for developing novel common vetch cultivars that could increase the use of this crop among the farmers in Serbia and the Balkans.