Abstract
Abstract Different ageing pattern in « normal » and « red » seeds of Haynaldia villosa Schur. A cytophotometric analysis in resting root meristems. – Cytophotometric determinations of DNA and histones content per nucleus were carried out in the 2C root meristematic nuclei from « yellow » and « red » seeds of Haynaldia villosa of different ages; the histones/DNA ratio increases during the storage period in the « yellow » seeds while it is almost constant in the « red » ones. The possible significance of these observations in relation to seed ageing is discussed.
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