DIFFERING IN AGRONOMIC AND QUALITY CHARACTERS IN SOME BACKCROSS–DERIVED LINES IN BREAD WHEAT (Triticum aestivum L.) GENOTYPES

The backcrossing method remains an efficient tool for transferring genes into established crop varieties. In this study; we were focused on evaluating the selected some backcross lines for yield, grain-quality traits and some agronomic traits under field condition. The experiment was conducted using 15 genotypes in randomized completely blocks design with four replications in Trakya ARI experimental field, during 2009-2010 and 2010-2011 growing years. Grain yield, days of heading and maturing, plant height and some quality parameters and relationship among these parameters were investigated. According to results, there was statistically difference among genotypes in terms of yield and other investigated characters, except for 1000-kernel weight, test weight. Grain yields decreased in Pehlivan, Aldane, Tekirdağ and Dropia backcross lines. It was determined that TKW increased in the backcross derived lines of the Gelibolu, Dropia and Prostor, gluten value increased in Pehlivan and Tekirdağ cultivars. Backcross line for gluten index of the Pehlivan, Aldane, Gelibolu, Prostor and Dropia cultivars highly increased compared with other components. Sedimentation values of the backcross lines of cultivars decreased in Prostor and increased in Pehlivan, Gelibolu and Dropia. The strongly negative correlations were measured between grain yield and days of maturing (r=-0.689**), plant height (r=-0.655**), and lodging resistant (r=-0.743**). Also, grain yield was negatively correlated with protein ratio (r=-0.608*), gluten value (r=-0.541*), and days of heading (r=-0.607*). The negative correlations were found between grain yield and 1000-kernel weight, test weight, hardness, sedimentation, and winter-kill, as well. The strong positive correlations were measured between protein ratio and gluten, hardness, sedimentation, days of heading and maturing, plant height, and lodging resistant. Grain hardness in genotypes increased with the extension of maturation period of the genotypes. Plant height in genotypes strongly correlated with grain yield, protein ratio, gluten value, gluten index, days of heading and maturing

EFFECT OF BIOMASS AT DIFFERENT GROWTH STAGE ON GRAIN YIELD AND QUALITY IN BREAD WHEAT (Triticum aestivum L.) GENOTYPES

The aim of this research was to determine the effects of location, genotypes and the interaction of location x genotypes on biomass, canopy temperature, yield and some of the quality traits of the bread wheat genotypes under field conditions. Thus, it was established with 25 genotypes in randomized completely blocks design with 4 replications at 3 locations in Trakya Region, Turkey, in 2013-2014 growing season. Grain yield, biomass, canopy temperature, plant height, 1000-kernel weight, test weight, and relationship among these characters were investigated. For determining biomass of the genotypes, data was taken at three plant growth stages; tillering, shooting and heading. Combined analysis of variance across three locations revealed highly significant variation among wheat genotypes for grain yield, biomass of stem elongation, heading stage and canopy temperature. The mean yield of the genotypes was 723.0 kg da-1, and the highest yields were obtained from Entry 22 with 826.3 kg da-1. The highest biomass was scaled in Entry-9 during threeplant growth stages. Additionally, a positive correlation was observed between grain yield and biomass in tillering, shooting, and heading growth stages of the genotypes. These results indicated that higher biomass at early plant growth stage was more significant for yield potential. There was detected slightly negative relationship between canopy temperature and biomass, and grain yield. It could be that the canopy temperatures of genotypes were measured lower during the increasing of biomass in plant development. During tillering stage, higher biomass promoted to plant height and positively affected protein ratio, values of gluten and sedimentation. In shooting phase of genotypes, biomass positively affected and increased in 1000-kernel weight, protein ratio, gluten value and sedimentation value, as well. But increasing in biomass during heading stage, negatively affected and decreased in canopy temperature, 1000-kernel weight, test weight, protein ratio, gluten index and sedimentation value

The investigations on fumigant effects of some monoterpenoid compounds against to cabbace aphid, Brevicoryne brassicae

Bu çalışmada Limonene, Linalyl acetate, p-cymene, ß-pinene, Allylisothiocyanate monoterpenoid bileşiklerinin lahana unlu yaprakbiti Brevicoryne brassicae'nın kanatsız ergin dişilerine karşı fumigant etkileri araştırılmıştır. Bütün testler her biri 55 mm çapında 12 mm yüksekliğinde plastik petri kaplarına yerleştirilmiş 10'ar yaprakbiti üzerinden 3 tekerrürlü olarak yapılmıştır. 50 ?l/l dozunda 24, 48 ve 72 saat süreli ön denemeler sonucunda Limonene, p-cymene, ß-pinene, Allylisothiocyanate monoterpenoid bileşikleri Letal Konsantrasyon (LC50 ve LC90) değerlerinin hesaplanması için 6 - 7 farklı alt doz denemelerine yine 24, 48 ve 72 saatlik sürelerle tabi tutulmuştur. Yaprakbitlerinde en düşük öldürücü etkiyi gösteren Linalyl acetate bileşiği ise 24, 48, 72 ve 96 saat süre ile bileşiklere maruz bırakılarak Letal Süre (LT50 ve LT90) denemeleri yapılmıştır. Bu denemeler sonucunda, doz ve süre uygulamaları göz önüne alındığında bileşiklerden en yüksek etkiyi Allylisothiocyanate'ın, en düşük etkiyi ise Linalyl acetate'ın gösterdiği belirlenmiştir.In this study, it was investigated on fumigant toxicity of Limonene, Linalyl acetate, p-cymene, ß-pinene, Allylisothiocyanate monoterpenoid compounds against to apterous female adults of Brevicoryne brassicae. All the tests were applied on 10 aphids, placed on a leaf disc in a plastic petri dish which has 55 mm diameter and 12 mm height, for three replicated. 50 ?l/l at a dose of 24, 48 and 72 hours of pre-trials as a result of Limonene, p-cymene, ß-pinene, Allylisothiocyanate monoterpenoid compounds Lethal Concentration (LC50 and LC90) values for the calculation of 6 to 7 different sub-dose trials again at 24, 48 and subject to a 72 hour periods of time were involved. Lethal effect of the compound showing the lowest on aphids Linalyl acetate 24, 48, 72 and 96 hours exposed to compounds with Lethal Time (LT50 and LT90) were carried out. As a result of these trials, doses of compounds and have maximum impact while considering applications Allylisothiocyanate, Linalyl acetate showed the lowest effect