Growth, greening, and phytochrome in etiolated spirodela (lemnaceae).


Two species of Spirodela were grown aseptically in a simple mineral medium containing sucrose. Weak red light (15 erg cm(-2) sec(-1)) enhanced dark growth of S. oligorrhiza, whereas weak far red light (15 erg cm(-2) sec(-1)) when given after the red light reduced this effect.The lag period in chlorophyll accumulation (20-24 hours) could be shortened by a… (More)

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