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Studies on plant growth‐regulating substances
Author(s) -
FARRAHIASCHTIANI S.,
TAYLOR H. F.,
WAIN R. L.
Publication year - 1977
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1977.tb01801.x
Subject(s) - biology , plant growth , botany , microbiology and biotechnology
SUMMARY The dwarfing of seedlings of Phaseolus vulgaris cv. Masterpiece by treatment with solutions of 4‐chlorobenzyltributylammonium bromide (B 4 ) as a foliar spray or by application to the roots has been demonstrated. Dwarfing resulted from a reduction of internodal and petiolar lengths but there was no evidence of delayed leaf or flower development. A reduction in transpiration rate was accompanied by some protection against wilting and an increased ability to recover from this condition. No changes in transpiration coefficient were observed. The primary leaves of treated seedlings retained chlorophyll longer than those of control seedlings, but in other leaves, chlorophyll and carotenoid pigment levels tended to fall following treatment with B 4 . Evidence was obtained that B 4 treatment delayed root nodule formation, an effect which could be associated with the antibacterial properties of quaternary ammonium salts.