Articles

EFFECT OF CHRONIC GAMMA IRRADIATION ON VASE LIFE OF CURCUMA ALISMATIFOLIA CULTIVARS

Article number
1012_73
Pages
547 – 550
Language
English
Abstract
Curcuma (Curcuma alismatifolia) is a monocotyledonous perennial, a member of the ginger family (Zingiberaceae) originating from tropical and subtropical areas of northern Thailand and Cambodia.
Because of their colorful, long-lasting and showy inflorescence, Curcuma alismatifolia cultivars have a great potential for use as a cut flower, potting plant and garden plant.
The inflorescence comprises a number of pink coma bracts in the upper part and green coma bracts in the lower part, with small true flowers.
Gamma irradiation is one of the most common procedures in plant mutagenesis.
Chronic irradiation is an exposure to ionizing radiation over an extended period (hours, weeks, months) depending on their nature, sensitivity and research requirements.
Effects of chronic gamma irradiation on vase life of harvested inflorescences of four Curcuma alismatifolia cultivars, namely ‘Doi Tung 554’, ‘Chiang Mai Red’, ‘Sweet Pink’ and ‘Kimono Pink’ was investigated at gamma green house (GGH) of the Malaysian Nuclear Agency (Nuclear Malaysia), Bangi, Malaysia.
Five chronic radiation doses of 0, 6.25, 8.8, 14.6, 33, and 87.4 Gy at dose rates of 0.02, 0.03, 0.05, 0.11, 0.3 (Gy/h) respectively were applied.
Both cut flowers and true flowers were damaged by irradiation.
Irradiated inflorescences showed earlier browning in bract tips, smaller size of inflorescence and less true flowers.
Vase life of irradiated flowers was reduced and the flowers wilted within 5-7 days after treatment.
Untreated inflorescence had a vase life of 10-14 days.

Publication
Authors
S. Taheri, L.A. Thohirah, N.A.P. Abdullah, Z. Ahmad
Keywords
Curcuma alismatifolia, chronic gamma irradiation, vase life
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