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The Effect of Gibberellic Acid and Guanosine Monophosphates on Extension Growth, Leaf Production and Flowering of Impatiens balsamina
Author(s) -
SHARMA REETA,
KUMAR SURINDER,
NANDA K. K.
Publication year - 1978
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1978.tb01637.x
Subject(s) - impatiens , gibberellic acid , biology , guanosine , botany , gibberellin , horticulture , biochemistry , germination , cultivar
Gibberellic acid (GA 3 ) increases the height of Impatiens balsamina under both 8‐ and 24‐h photoperiods. The height also increases with all guanosine monophosphates (GMPs) under 8‐h photoperiods but only with 5′‐GMP under 24‐h photoperiods. GA 3 as well as GMPs increase the number of leaves under 8‐h but not under 24‐h photoperiods. GA 3 as well as GMPs induce floral buds under strictly non‐inductive photoperiods and increase the number of floral buds under 8‐h photoperiods. The floral bud initiation occurs earlier when cGMP is used in combination with 100 mg/l GA 3 .