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Flower induction in Norflurazon‐treated Pharbitis nil: photo‐induction of photoperiodic sensitivity in seedlings grown in vitro and daylength sensitivity in partly bleached potted plants
Author(s) -
Heyde N. M.,
Rombach J.
Publication year - 1988
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1988.tb02145.x
Subject(s) - pharbitis nil , phytochrome , flower induction , biology , botany , reversion , photoperiodism , plant stem , gibberellin , sucrose , horticulture , red light , biochemistry , gene , phenotype
SUMMARY Photo‐induction of photoperiodic sensitivity in seedlings of the short‐day plant Pharbitis nil Choisy was unaffected by Norflurazon when grown under sterile conditions on a medium containing sucrose. Photoperiodic sensitivity was induced by 6 h light or by intermittent illumination. This is discussed in relation to results reported elsewhere on photo‐induction of the capacity for dark reversion of the far‐red absorbing form of phytochrome. Application of Norflurazon to the tips of potted plants grown in the light caused bleaching of the youngest leaves and internodes and stimulated flowering at a day length of 11 h, which normally results in weak photoperiodic induction.