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EFFECTS OF LIGHT ON ROOT GROWTH, NODULATION, AND APOGEOTROPISM OF ZAMIA PUMILA L. SEEDLINGS IN STERILE CULTURE
Author(s) -
Webb David
Publication year - 1982
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1982.tb13260.x
Subject(s) - biology , botany , elongation , sucrose , white light , horticulture , food science , materials science , physics , optics , metallurgy , ultimate tensile strength
Secondary root nodulation and apogeotropism of Zamia pumila L. seedlings grown axenically on modified White's minerals with 2% sucrose at pH 5.7 was caused by light. Light also inhibited primary and secondary root elongation as well as secondary root production. Light‐induced growth inhibition and nodulation were greatest at high light intensities. Apogeotropism was more frequent at low light intensities.