Comparisons of yield, quality and floral characteristics of selected and improved cultivars of the Australian wildflower, Ixodia achillaeoides.

摘要

A research programme has been conducted in South Australia to develop improved varieties of the Australian native daisy, Ixodia achillaeoides subsp. alata for cut flower production. Ixodia daisy is a perennial shrub in the Asteraceae which producesinflorescences of white everlasting flowers of unique appearance and durability. Considerable variation in morphological and physiological characteristics exists within this subspecies which greatly influences floricultural potential. The aims of this programme are to develop a range of suitable cultivars that exhibit superior yield and quality, extend the harvest period and produce distinct products for dried, fresh and pot plant markets. Field trials of selected varieties grown in randomized block plantings in South Australia has led to the development of standards against which new cultivars of ixodia daisy can be compared. Criteria for assessment of suitable varieties include total harvest yield (by weight and stem numbers in three length grades and number of dried bunches), number of stems/marketable bunch, harvest sequence, adaptability to cultivation and disease tolerance. Agronomic and post-harvest performance as well as floral descriptions are used for selection of superior varieties for floriculture markets.