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PHOTOPERIODISM IN SEEDLING STRAINS OF LEMNA PERPUSILLA: JUVENILITY WITHOUT OBVIOUS MORPHOLOGICAL CORRELATES?
Author(s) -
Hillman William S.
Publication year - 1975
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.1537-2197.1975.tb14081.x
Subject(s) - biology , germination , photoperiodism , seedling , botany , lemna , senescence , horticulture , microbiology and biotechnology
Strains derived from seeds of L. perpusilla 6746 were tested for flowering on several media under 8‐hr days at various times after germination, always in comparison with the parent strain. They flowered slowly in experiments started 2 wk after germination and more rapidly 7 wk after and later, with many eventually approaching parental values. Juvenility as measured in this way was not associated with any obvious morphological difference between younger and older strains, or from the parent. A system based jointly on this effect and what is already known of vegetative senescence in Lemna should prove valuable for a general study of aging in plants.