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Biologia




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Volume 64, Issue 4

Issues

Pollination biology of Disanthus cercidifolius var. longipes, an endemic and endangered plant in China

Yi-An Xiao / Bijoy Neog / Yong-Hong Xiao / Xiao-Hong Li / Jin-Chun Liu / Ping He
Published Online: 2009-07-17 | DOI: https://doi.org/10.2478/s11756-009-0122-7

Abstract

Disanthus cercidifolius Maxim. var. longipes H.T. Chang usually has two inflorescences growing in opposite directions in the axillae, but occasionally three inflorescences grow paratactically. The typical flowering process could be divided into 4 periods: “Pre-dehiscence”, “Initial dehiscence”, “Full dehiscence” and “Withering”. Both the natural population and the planted population had a flowering peak of 15–35 days after the first flower bloomed. There were significant differences between the time courses of flowering of the two populations. Out-crossing is the main breeding system in this species. And autogamy decreases the risk of reproductive failure of this species. The main insect pollinators of D. cercidifolius var. longipes are Episyrphus balteatus de Geer, Scaptodrosophila coracina Kikkawa and Peng, Polistes olivaceus de Geer, Apis cerana Fabricius, Nezara viridula L. and Coccinella septempunctata L., and so on. Among the insects, S. coracina and E. balteatus are the most important and efficient pollinators, but others are inefficient pollinators. Though wind pollination is not efficient, it guarantees reproduction when insect pollinators are not available. “Mass flowering” is an adaptive behavior and reproductive strategy of this species, and “few fruiting” could be caused by the lack of pollinators.

Keywords: Disanthus cercidifolius Maxim. var. longipes H.T.Chang; pollen limitation; pollination efficiency; reproductive assurance role; reproductive strategy

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About the article

Published Online: 2009-07-17

Published in Print: 2009-08-01


Citation Information: Biologia, Volume 64, Issue 4, Pages 731–736, ISSN (Online) 1336-9563, ISSN (Print) 0006-3088, DOI: https://doi.org/10.2478/s11756-009-0122-7.

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© 2009 Slovak Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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