Turkish Journal of Field Crops

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RADIOSENSITIVITY OF TURKISH SESAME CULTIVARS TO GAMMA RAYS

M. İlhan Çağırgan

Abstract

Seeds of four sesame cultivars need small steps for improvement, i.e., Muganlı-57, Özberk-82, Çamdibi and Gölmarmara, were irradiated with the 150, 300, 450, 600, and 750 Gy doses of gamma rays. Irradiated seeds were sown alone with their controls in the field in order to study the response of the cultivars to irradiation. Survivals (two weeks later than the first irrigation), plant height before first flowering and days to first flowering were recorded. It was found that these traits, when measured in proper time, are applicable to dose-response studies for practical mutation breeding purposes. The results revealed that with increasing doses survival and plant height decreased but flowering was delayed. Although growth reduction measured in plant height suggested to use higher doses, i.e., 600 or 750 Gy, survivals were very low in these populations as well as high number of morphophysiological anomalies and chlorophyl mutation-like modifications in chimeric structure. Considering all these results it was concluded that the 300 and 450 Gy doses are highly effective in inducing primary physiological damage in the M, of Turkish sesame cultivars.

Keyword: sesame cultivars ,chlorophyl mutation ,Irradiated seeds ,
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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
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