Bengu Turkyilmaz Unal^1,*, Mustafa Bayram²

Phyton-International Journal of Experimental Botany, Vol.88, No.4, pp. 413-423, 2019, DOI:10.32604/phyton.2019.08244

Abstract In this study, we aimed to investigate the allelopathic effects of sunflower and wheat root exudates on the common weeds such as wild mustard and white mustard in our region. The root exudates which were obtained by soaking 8 weeks old sunflower and wheat seedlings (20 or 40 seedlings) in 100 mL of distilled water for 3 days were applied to the leaves of wild mustard and white mustard. In order to compare the allelopathic effect, the recommended dose (1 g.da^-1 ) and twice the recommended dose (2 g.da^-1 ) of Gromstor (Tribenuron-methyl), a herbicide preferred by farmers for the… More >

ISRAEL A. VEGA^*1,2, FEDERICO A. DELLAGNOLA¹, JORGE A. HURST³, MARTÍN S. GODOY¹ AND ALFREDO CASTRO-VAZQUEZ^1,2

BIOCELL, Vol.36, No.2, pp. 47-55, 2012, DOI:10.32604/biocell.2012.36.047

Abstract Pigments present in the brown-greenish C morph of an intracellular endosymbiont of Pomacea canaliculata were investigated. Acetone extracts of the endosymbiotic corpuscles showed an absorption spectrum similar to that of chlorophylls. Three fractions obtained from silica gel column chromatography of the acetone extracts (C_I , C_II and C_III ), were studied by positive ion fast atom bombardment-mass spectrometry (FAB–MS) and hydrogen-nuclear magnetic resonance (H-NMR). Results indicated the presence of (1) a sterol in the yellow colored C_I fraction; (2) a mixture of pheophorbides a and b in the major green fraction, C_II; and (3) a modified pheophorbide a in the… More >

Turkyilmaz Unal B¹, A Esiz Dereboylu²

Phyton-International Journal of Experimental Botany, Vol.84, No.1, pp. 144-147, 2015, DOI:10.32604/phyton.2015.84.144

Abstract The aim of the study was to investigate some physiological effects of an insecticide (Akira 20-SP) with acetamiprid agent on Cin misir Adapop 10 and Sert misir Adapop 2 cultivars of corn plants in different concentrations [0 g/L, 0.6 g/L (recommended concentration), 1.2 g/L]. Photosynthetic pigment substances, total soluble protein and proline contents were determined. Analysis of treated leaves showed that the recommended concentration resulted in higher chlorophyll value in Cin misir Adapop 10 and Sert misir Adapop 2. Carotenoid amounts increased in Cin misir Adapop 10 and decreased in Sert misir Adapop 2 to the control. Total protein contents… More >

Bibi A¹, SA Majid², A Munir³, A Ulfat⁴, G Javed², S Khatoon², N Azhar², S Ashraf², S Aziz², N Mumtaz²

Phyton-International Journal of Experimental Botany, Vol.87, pp. 178-182, 2018, DOI:10.32604/phyton.2018.87.178

Abstract Chilling stress on cereal crops is the major form of cold stress that appears in some regions, and causes significant losses by depressing seed germination, and seedling growth and establishment. Hormones have the ability to reduce the stress effects in crops by various mechanisms. To determine the role of nitric oxide in mitigating chilling damages in wheat, two trials were conducted and seven wheat varieties were used. Seeds of wheat varieties after priming using three different concentrations (0, 10^-4, 10^-5 M) of sodium nitroprusside as nitric oxide donor were grown under two growth conditions (control, 4 °C) according to a… More >

Dhouha Belhaj Sghaier¹, Insaf Bankaji¹, Sylvia Pedro², Isabel Caçador², Noomene Sleimi^1,*

Phyton-International Journal of Experimental Botany, Vol.88, No.3, pp. 239-252, 2019, DOI:10.32604/phyton.2019.06887

Abstract The lack of knowledge of plant tolerance and differential response to aluminum (Al) encouraged many researchers, in the last decade, to elucidate Al toxicity and tolerance mechanisms. The current study reported the impact of Al, a toxic element with negative effects on plant growth and development, in halophytic plant Tamarix gallica. Plants were subjected to different Al concentrations (0, 200, 500 and 800 μM) with or without NaCl (200 mM) supplementation. Growth, photosynthesis and mineral content were assessed. Al stress had a significant decrease on shoots’ biomass production between 19 to 41%, and a little variation on chlorophyll content and… More >