The pattern of accumulation of the sudanophilic substance on the wall of the cells of the pigment strand of a diploid and a tetraploid wheat was followed by high-resolution light microscopy. The cells of the pigment strand of the 4n wheat tend to elaborate and accumulate more adcrusting substance in the cells of the pigment strand than the 2n wheat. The functional significance of the accumulation of the adcrusting substance in relation to the filling mechanism of the wheat grain is discussed.
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S. Y. Zee (1975) studied this question.