![Development of Photosystem-II Activity during Irradiance of Etiolated Helianthus (Asteraceae) Seedlings]()
Development of Photosystem-II Activity during Irradiance of Etiolated Helianthus (Asteraceae) SeedlingsJefferson G. Lebkuecher, Kurt A. Haldeman, Christine E. Harris, Sonia L. Holz, Sary A. Joudah and Darcy A. Minton · American Journal of Botany · 1999