Turkish Journal of Field Crops

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STABILITY ANALYSES FOR INTERPRETING GENOTYPE BY ENVIRONMENT INTERACTION OF SELECTED ORIENTAL TOBACCO LANDRACES

Dursun KURT

Abstract

Advanced pure lines, which are in different genetic and vegetative characteristics determined in a breeding program initiated in 2013, were included to the yield tests in the region before registration. Chemical and morphological variability and stability of 13 advanced pure tobacco lines and 2 standard varieties were determined in two different locations. The experimental layout was random blocks with three replications and the experiment was carried out in 2016 and 2017. Plant height values ranged from 85.25 to 156.71 cm, the number of leaves from 22.43 to 41.71 leaf plant-1 , leaf width ranged from 9.35 to 11.52 cm, leaf length from 17.36 to 21.89 cm, yield from 1371.9 to 1756.7 kg ha-1 , quality grade index from 67.33 to 81.58%, nicotine content from 1.02 to 1.98% and glucose content from 3.33 to 9.33%. The lines 16, 21, 26 and 45 were identified as strong variety candidates suitable for the region based on all the parameters and the statistical conditions examined. The use of biplots that the environments were distributed on axes, enabled to make location-based variety recommendations. The biplot graph based on environment and genotype interaction was used in the recommedations of tobacco variety for each location.

Keyword: Chemical contents, HPLC, Samsun type, quality, yield ,

Effects of Different Water Stress Levels on Biomass Yield and Agronomic Traits of Switchgrass (Panicum virgatum L.) Varieties under Semi-Arid Conditio

Erdal GONULAL, Suleyman SOYLU, Mehmet SAHIN

Abstract

A field experiment was conducted in the Wielkopolska region at the Gorzyń Research Station, Poland (52.34°N, 15.54°E) in Central Europe. The study was conducted over a 3-year period (2017, 2018, 2019) as a two-factorial design with four replications in the RCBD. The aim of the research was to determine the effect of the cultivar (‘Bolero’, ‘Tytan’) and the inoculation (Nitragina–seeds inoculation, Nitroflora I–seeds inoculation, Nitroflora II–soil inoculation, HiStick® Lupin–seeds inoculation) on plant development, seeds chemical composition and yielding of narrow-leaved lupin. The weather conditions and experimental factors significantly influenced on productivity of narrow-leaved lupin ‘Tytan’. Drought during the growing season reduced seeds and protein yields. After inoculation of HiStck the seeds yield was significantly greater by 12.4% (p < 0.01) and the protein yield after application of Nitroflora I or HiStick by 13.9% (p < 0.01) and 19.2% (p < 0.01), respectively. Correlation coefficients showed strong relations between number of pods and seeds per plant in both cultivars regardless of the inoculation variant, however the strongest relations in both cultivar were proved on HiStick treatment.
Keyword: Biological nitrogen fixation, chemical composition, legumes, protein efficiency, yielding