Vol. 76 No: 5

Title:
Effects of chitosan treatments on seedling growth, chitinase activity and flower quality in Eustoma grandiflorum (Raf.) Shinn. 'Kairyou Wakamurasaki'

Authors:
KATSUMI OHTA, TOSHIKI ASAO and TAKASHI HOSOKI

pp: 612-614

Abstract:
The effects of chitosan treatments on seedling growth, chitinase activity, triphenyl tetrazolium chloride (TTC) reducing activity and flower quality of Eustoma grandiflorum (Raf.) Shinn. 'Kairyou Wakamurasaki' were investigated. The application of a soil mix of chitosan (1° w/w) at sowing remarkably enhanced growth, whereas coating seed with 1° chitosan in lactate was rather ineffective. Chitinase activity and TTC reducing activity following treatment with chitosan soil mix were significantly higher compared with the untreated control or coating seed treatment. After transplanting, the chitosan soil treatment resulted in greater shoot length, stem diameter, weight of cut-flowers and increase in number of flowers than in the untreated control. Chemical name used: poly-(1->4)-β-0-glucoseamine (chitosan).

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