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Pollination ecology of Lumnitzera racemosa Willd. (Combretaceae), a non-viviparous manfrove tree

Authors:

A J Solomon Raju ,

Andhra University Visakhapatnam India, IN
About A

Environmental Sciences. Working as Professor

My work includes reproductive ecology, conservation biology, biodiversity conservation and management, butterfly ecology, ornithology, entomology and plant-animal interactions

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Rajendra Kumar,

Ministry of Environment and Forests, Paryavaran Bhavan, CGO Complex, Lodhi Road, New Delhi 110003, IN
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B Rajesh

Department of Environmental Sciences, Andhra University, Visakhapatnam 530003, IN
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Abstract

Lumnitzera racemosa is a non-viviparous evergreen mangrove tree species. It is a massive bloomer from mid-July to mid-August. The flowers are bisexual, self-compatible, self-pollinating and exhibit a mixed breeding system. The plant is temporally dioecious with marked protandry and a non-receptive stigma on day one of anthesis with a receptive stigma on days two and three. Fruit set is approximately 90% due to self and cross-pollination. The floral characters are related to pollination by generalized flower-visiting insects, notably actinomorphy, white spreading petals, limited but easily accessible nectar, and position of stamens. Pollinators include bees, wasps and butterflies. Fruits are invariably 1-seeded despite the presence of 3–5 ovules. Natural regeneration is low perhaps due to abortion of embryos or the feeding of embryos by small grubs. Fallen mature fruits become fibrous in water and this may aid dispersal in the sea. However, fruit germination and seedling establishment is curtailed due to their salinity-sensitivity.

DOI: http://dx.doi.org/10.4038/tapro.v6i2.7191

TAPROBANICA, 2014. Vol. 06, No. 02: pp. 100-109 pls. 9-11.

How to Cite: Solomon Raju, A.J., Kumar, R. & Rajesh, B., (2014). Pollination ecology of Lumnitzera racemosa Willd. (Combretaceae), a non-viviparous manfrove tree. TAPROBANICA: The Journal of Asian Biodiversity. 6(2), pp.100–109. DOI: http://doi.org/10.4038/tapro.v6i2.7191
Published on 31 Aug 2014.
Peer Reviewed

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