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Volatiles in Different Floral Organs, and Effect of Floral Characteristics on Yield of Extract from Boronia megastigma (Nees)


MacTavish, HS and Menary, RC, Volatiles in Different Floral Organs, and Effect of Floral Characteristics on Yield of Extract from Boronia megastigma (Nees), Annals of Botany, 80, (3) pp. 305-311. ISSN 0305-7364 (1997) [Refereed Article]

DOI: doi:10.1006/anbo.1997.0451


The relative amounts of volatile compounds in the extract and headspace from each floral organ were assessed in order to identify the main organs for accumulation and emission. The mass of flowers/organs, the number/density of oil glands and yield of volatiles were examined for their relationship with extract yield, in clonal and non-clonal plants. Boronia flowers were divided into component organs and the solvent extractable product and headspace above each organ type was quantified. The petals comprised 50% of the weight of the flowers, and the stigma 20%; however, the stigma contributed 70% of the total volatile compounds to extract from the whole flower. Proportionately more β-ionone and dodecyl acetate were emitted from the stigma and anthers than were contained in the extract, compared with other volatiles. The sexual organs are morphologically equipped for emission of volatiles to attract pollinators. Between non-clonal plants, there was a lower coefficient of variation for extract yield than for values relating to extract composition, indicating that the former is more heritable than the latter. Variation between clonal plants was reduced compared with variation between non-clonal plants. The environment modifies yield and quality of extract in clonal plants, indicating that both have relatively low heritability. No significant relationships between any floral characteristics and extract yield were found. Biosynthetic potential to accumulate extract is therefore of prime importance, and the effect of environment on this potential should be the subject of future work.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Horticultural production
Research Field:Horticultural production not elsewhere classified
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Ornamentals, natives, flowers and nursery plants
UTAS Author:MacTavish, HS (Dr Hazel MacTavish-West)
UTAS Author:Menary, RC (Professor Robert Menary)
ID Code:10691
Year Published:1997
Web of Science® Times Cited:14
Deposited By:Agricultural Science
Deposited On:1997-08-01
Last Modified:2011-08-11

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