[Accumulation of dry matter and nitrogen in the developing seeds of high protein mutant lines of "Triticum aestivum L." produced by the IAEA]
1993
Mir Ali, N. | Nabulsi, I. (Atomic Energy Commisson, Damascus (Syria). Dept. of Radiation Agriculture)
Accumulation patterns of dry matter and nitrogen in the developing seeds of nine mutant lines produced by the IAEA and their mother Triticum aestivum (L) line were studied. The experiments lasted 2 years under rain fed conditions. Significant differences were found among the lines in dry matter and nitrogen rates, and periods of accumulation, whereas no significant differences were found in the final seed weight of the lines. The highest rates of accumulation for dry matter and nitrogen were accompanied with the shortest period of accumulation in two late flowering mutant lines. However these two lines were the lowest in their yield per plot. The other mutant lines achieved the high nitrogen percentage in their seeds through the relative reduction in dry matter accumulation rate compared to their other line rather than through higher rate of nitrogen accumulation. This study revealed some of the potential reasons behind the higher percentage of protein in the seeds of the mutant lines under investigation.
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