الفهرس | Only 14 pages are availabe for public view |
Abstract In the years ahead, wheat, would have more than any other cereal, on increasingly greater importance as a source of protein for much of the world’s increasing populations. Even until now, wheat provides more nourishment for more people than does any other source. Improvement of wheat would require increment improvement of its protein content. A protein fraction could be considered as a primary product of a structural gene and serves as a marker for that gene. Seed protein electrophoresis has been widely used to analyse the genetically conditioned protein fractions in wheat and several other cereals. The effect of gamma irradiation on the expression of genes controlling protein subtractions at the mutant generations can not be overlooked. Based on the electrophoretic spectra, selection programs could be executed to screen for and maintain these mutants that have, a) a voidance of stress effects through earliness, b) high biological stress resistance, and c) high potential yield (Kozhemyakin and Ispanov 1984) . Gamma irradiation doses of 5-15 krad were said to be suitable for in ducing greater genetic diversity in wheat and creating mutant forms with positive properties (Khokhlova et al, 1983; Paladi, 1984; sigida, 198:0; Yanev, 19oO:l; Abd-ElSalam, 1986 and Savov, 1989). Most places 1n the world are subject to enviromental stresses (salinity or drought). The Nile Delta is widely known for its salt- affected soils (Elgabaly et al, 1969 |