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Article << Previous     |     Next >>   Contents Vol 29(3)

Production of the Australian native daisies (Helipterum roseum and Helichrysum bracteatum) for the cut flower market

KV Sharman, M Sedgley and D Aspinall

Australian Journal of Experimental Agriculture 29(3) 445 - 453
Published: 1989

Abstract

Cut flower production of 2 Australian native daisies, Helipterum roseum and Helichrysum bracteatum, was investigated in the glasshouse and outdoors at 4 planting times. Both species exhibited a long day response with floral initiation occurring in any photoperiod but with peak production following longer days. Peaks in bloom production occurred during the spring and summer regardless of planting time. Floral abnormalities were observed in Helipterum roseum in all environments and planting times with the exception of the outdoor winter planting. There was a tendency for inflorescence diameter of both species and stem length of Helipterum roseum to decline with time from anthesis of the apical inflorescence. Optimum production of top quality blooms of Helipterum roseum extended from October to January following planting between autumn and spring. Peak production of Helichrysum bracteatum between December and March can be expected following planting during winter and spring. It may be possible to extend these seasons by weekly planting from autumn to spring. In addition, the imposition of extended photoperiod or night break treatments following summer or autumn planting may fulfil the photoperiod requirements of the plants and stimulate increased production between March and November. It is proposed that both species be considered for the fresh cut flower market, with Helipterum roseum marketed as single stems and Helichrysum bracteatum as sprays. Keywords: cut flowers; production; Photoperiodism; planting; planting date; protected cultivation; cultural methods; flowers; initiation; ornamental plants; ornamental herbaceous plants; Helichrysum bracteatum; Australia; Helipterum roseum; plants; Spermatophyta; Helichrysum;



Full text doi:10.1071/EA9890445

© CSIRO 1989

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