The aim of the presented investigation was to estimate the genetic diversity, and correlation analysis among yield and quality traits in twenty local maize populations. The experiment was based on ...randomized complete block design (RCBD) with three replications. In the study we compared grain yield, and quality traits such as protein, oil and starch content in grain. The results showed that there were significant differences among populations. The overall mean grain yield was 79.33 g plant-1 with the highest grain yield in population GBK-7 (105.13 g plant-1). The protein and oil contents ranged between 11.02 to 13.02% and 2.56 to 5.57%, respectively. The starch content varied from 68.58 to 70.92%. The first two canonical discriminant functions were significant at p < 0.01. It is important to point out the great relevance of the first two discriminant functions justifying 95.80% of the variability among populations. There were also big differences regarding phenotypic correlations. The study suggests that the quality traits are phenotypically and genotypically highly variable and therefore very useful for breeding process
Namen raziskave je bil proučiti genetsko raznolikost in korelacije med pridelkom in nekaterimi kakovostnimi lastnostmi zrnja (vsebnost beljakovin, olja, škroba in pepela v zrnju) 20 lokalnih populacij koruze na Kosovem. Poskus je bil postavljen po metodi naključnih blokov v 3 ponovitvah. Za vse lastnosti so ugotovljene statistično značilne razlike med proučevanimi populacijami. Povprečni pridelek zrnja vseh populacij je znašal 79,33 g rastlino-1, najvišji pridelek je imela populacije GBK-7 (105,13 g rastlino-1). Vsebnost beljakovin se je gibala med 11,02 in 13,02 %, olja med 2,56 in 5,57 % in škroba med 68,58 in 70.92 %. Z diskriminantno analizo je ugotovljeno, da sta prvi dve komponenti pojasnili 95,80 % varabilnosti med populacijami. Med nekaterimi lastnostmi so za proučevane populacije ugotovili signifikantne korelacije. Glede na veliko genetsko variabilnost smatramo, da bi proučevane lokalne populacije lahko bile koristne v nadaljnjem žlahtnjenju genotipov koruze z dobrimi kakovostnimi lastnostmi zrnja.
The new varieties' performances were compared to the standard rice varieties prima riska (Macedonian variety) and R-76/6 (domesticated Italian variety), grown under agroecological conditions of the ...Kocani region. The research was carried out during 2009 and 2010 by setting-up field trials (randomized block system). The following traits were analyzed: paddy rice yield, biological yield, stem height, panicle length and number of productive tillers per m2. The highest average yield of paddy rice was achieved in the variety galileo (8548 kg/ha), and the lowest was in the standard variety R-76/6 (7735 kg/ha). The highest average biological yield was reached of the standard variety R-76/6 (17166,50kg/ha), while the lowest was in variety bianca (16125,00kg/ha). The introduced rice varieties were characterized by lower average stem height (bianca-53,70 cm, galileo-5&,24 cm) compared to standards (prima riska- 86,20cm and R-76/6-92,40 cm). The average panicle length of the varieties: bianca (17,20 cm), galileo (16,43 cm) and the standard R-76/6 (16,27 cm) was lower compared to the standard variety prima riska (19,15cm). The highest average number of productive tillers per m2 was determined for the standard variety R-76/6 (399,83) and the lowest for the variety bianca (334,67). In 2009, the significantly largest number of productive tillers per m2 (for both levels of probability) was estimated for the standard variety R-76/6 (493,33), since in 2010, for the same character, the significantly highest value was reached in the variety galileo (420,33). PUBLICATION ABSTRACT
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