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Effects of growth retardants on bulbil production by Narcissus twin‐scales
Author(s) -
HANKS GORDON R.
Publication year - 1987
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.1744-7348.1987.tb03248.x
Subject(s) - paclobutrazol , biology , chlormequat , narcissus , bulb , botany , liliaceae , horticulture , plant growth
SUMMARY Narcissus twin‐scale propagules, cut from various positions in the parent bulb, were incubated with gibberellic acid (GA 3 ) or growth retardants. Bulbil production was inhibited in all cases by GA 3 at 10–100 mg/litre. Chlormequat chloride, chlorphonium chloride and paclobutrazol also inhibited bulbil production; in the case of paclobutrazol, outer twin‐scales were more sensitive to lower concentrations of the retardant than inner ones. Ancymidol enhanced bulbil production (in numbers by up to 15%) in the outermost twin‐scales, and had no stimulatory effect on the inner twin‐scales. Treatments affected bulbil numbers and bulbil lengths about equally.