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Floral abortion and pollination in four species of tropical mangroves from northern Australia

Coupland, Grey, Paling, E and McGuinness, Keith (2006). Floral abortion and pollination in four species of tropical mangroves from northern Australia. Aquatic Botany,84(2):151-157.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 16 times in Scopus Article | Citations

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IRMA ID 80801907xPUB6
Title Floral abortion and pollination in four species of tropical mangroves from northern Australia
Author Coupland, Grey
Paling, E
McGuinness, Keith
Journal Name Aquatic Botany
Publication Date 2006
Volume Number 84
Issue Number 2
ISSN 0304-3770   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-30544452307
Start Page 151
End Page 157
Total Pages 7
Place of Publication Netherlands
Publisher Elsevier
Field of Research 0607 - Plant Biology
HERDC Category C1 - Journal Article (DEST)
Abstract We assessed natural rates of floral abortion in four common mangrove species from nor-them Australia and subsequently manipulated pollination experimentally. Sonneratia alba J. Smith exhibited the highest rate of fruit set of the four species (23%), indicating this mangrove was best able to utilise the natural pollination opportunities provided. Fruit set in S. alba appeared, however, to be pollinator limited, as large increases in fruit set occurred after manual cross-pollination of flowers. Avicennia marina (Forsk.) Vierh. had the highest rate of natural pollination, but fruit set was lower (15%) and appeared to be impeded by resource limitations. Although a range of insects visited Ceriops australis (C.T. White) Ballment, T.J. Sur & Stoddart, the rate of fruit set was low (3%) and the capacity for flower fertilisation limited. despite evidence of autogamy in this species. There was an indication of both resource and pollinator limitation in C. australis. Rhizophora stylosa Griff. exhibited limited fruit set (0.5%), possibly due to limiting maternal resources and the lack of adaptation of flowers to either animal or wind pollination. Large increases in fruit set were recorded after manual cross-pollination of R. stylosa flowers. R. stylosa and C. australis, characterised by resource rich propagules with long periods of development, both aborted a large proportion of propagules during the fruit maturation process.
Keywords fruit set
manual cross-pollination
plant-animal interaction
pollinator limitation
resource limitation
ant pollination
seed production
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