Floral biology, breeding system and pollination ecology of an endangered tree Tetracentron sinense Oliv. (Trochodendraceae)

Botanical Studies
Xiaohong GanHuaichun Li

Abstract

Tetracentron sinense Oliv. is an endangered tree mainly distributed in south-central China. The breeding system and pollination ecology of T. sinense are unclear. With a conservation perspective, the floral biology, breeding system and pollination ecology of Tetracentron sinense Oliv. were investigated, in order to discuss the endangered factors related to pollination, and to provide important information for its conservation. Our results revealed four important aspects of the reproductive biology of T. sinense. 1) T. sinense usually flowers by the beginning of June, and the flowering period of the population is about two months, and the florescence of florets lasted for 15 to 24 days with delicate fragrance. 2) The pollen/ovule ratio is 720 ± 28, and the outcrossing index is three. Artificial pollination experiments showed that T. sinense is self-compatible, with facultative xenogamy and no indication of agamospermy. 3) The pollination syndrome is ambophily, and self-pollination plays an important role in fruit production if wind and insect pollination is unavailable. 4) Insect pollinators were predominantly represented by Coleoptera, Diptera and Hymenoptera. Syrphid fly and bees were the main effective pollinators. The result...Continue Reading

References

Aug 27, 2009·PloS One·Matthias AlbrechtBernhard Schmid
Feb 1, 1996·Trends in Ecology & Evolution·S C Barrett, L D Harder
May 1, 2003·American Journal of Botany·Myriam Gaudeul, Irène Till-Bottraud

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Citations

Jul 8, 2017·AoB Plants·Ling-Na ChenHan-Qi Yang

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Methods Mentioned

BETA
dissection
scanning electron microscopy

Software Mentioned

SPSS

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