Journal
APPLIED RADIATION AND ISOTOPES
Volume 86, Issue -, Pages 71-78Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2013.12.033
Keywords
Wheat grains; Irradiation; Fast neutrons; (252)cf; Grain yield
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The effects of fast neutrons from a Cf-252 source in the fluence range 10(5)-10(8) n/cm(2) on the Egyptian wheat cultivar (Sakha 92) were studied. The experiment was conducted for three successive seasons (2008/2009, 2009/2010, and 2010/2011) to study the effect of the irradiation on the plant growth, grain yield, and physiological changes of three generations of plants produced by irradiated moisturized grains. A low fast-neutron fluence 2 x 106 n/cm2 increased the yield throughout the three mutagenic generations considerably. It also increased concentrations of the total chlorophyll, sugars, and crude protein. These changes improve the quantity and quality of the grain. Also, a study of the effect of salinity of the irrigation water on the characteristics of the third-generation grains produced by neutron-irradiated grains was performed. With increasing concentration of sodium chloride in the irrigation water in the range 0.5-1.5%, concentrations of osmoprotectants, namely, reducing sugars and praline amino acids, increased. The concentration of Na+ in the grains increased in parallel with the salinity of the irrigation water regardless of irradiation, while the concentrations of Ca2+ and K+ decreased. (C) 2014 Elsevier Ltd. All rights reserved.
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