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It is not all about being sweet: differences in floral traits and insect visitation among hybrid carrot cultivars

Citation

Gaffney, A and Bohman, B and Quarrell, SR and Brown, PH and Allen, GR, It is not all about being sweet: differences in floral traits and insect visitation among hybrid carrot cultivars, Insects, 11, (7) Article 402. ISSN 2075-4450 (2020) [Refereed Article]


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DOI: doi:10.3390/insects11070402

Abstract

Cytoplasmically male-sterile (CMS) carrot cultivars suffer from low pollination rates. In this study, insect visitation varied more than eightfold between 17 CMS carrot cultivars in a field-based cultivar evaluation trial. The visitation rates of honey bees, nectar scarabs, muscoid flies, and wasps each significantly differed among these cultivars. No significant difference in visitation rates was observed among cultivars of different CMS type (brown-anther or petaloid) or flower colour, but cultivars of Berlicumer root type had significantly higher insect visitation rates than Nantes. Six cultivars were further compared in regard to selected umbel traits: as umbel diameter increased, so did the visitation of soldier beetles, while that of honey bees decreased. Finally, nectar of these six cultivars was analysed for sugar content, which revealed monosaccharides to be the most common sugars in all. There was high variation in the levels of sugars from individual umbellets but no significant difference in nectar sugar composition among cultivars, suggesting that nectar sugar composition is of minor importance regarding pollinator attraction to hybrid CMS carrot umbels.

Item Details

Item Type:Refereed Article
Keywords:crop carrot, hybrid, honey bee, pollination, entomology
Research Division:Agricultural and Veterinary Sciences
Research Group:Crop and Pasture Production
Research Field:Crop and Pasture Production not elsewhere classified
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural Crops
Objective Field:Vegetables
UTAS Author:Gaffney, A (Ms Ann Gaffney)
UTAS Author:Quarrell, SR (Dr Stephen Quarrell)
UTAS Author:Brown, PH (Professor Phil Brown)
UTAS Author:Allen, GR (Associate Professor Geoff Allen)
ID Code:139739
Year Published:2020
Deposited By:Agriculture and Food Systems
Deposited On:2020-06-30
Last Modified:2020-07-01
Downloads:0

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