Seed Dispersal and Germination Traits of 70 Plant Species Inhabiting the Gurbantunggut Desert in Northwest ChinaReport as inadecuate




Seed Dispersal and Germination Traits of 70 Plant Species Inhabiting the Gurbantunggut Desert in Northwest China - Download this document for free, or read online. Document in PDF available to download.

The Scientific World Journal - Volume 2014 2014, Article ID 346405, 12 pages -

Research Article

Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China

Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan 838008, China

State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

Received 4 April 2014; Revised 22 October 2014; Accepted 23 October 2014; Published 17 November 2014

Academic Editor: Pia Parolin

Copyright © 2014 Huiliang Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Seed dispersal and germination were examined for 70 species from the cold Gurbantunggut Desert in northwest China. Mean and range 3 orders of magnitude of seed mass were smaller and narrower than those in other floras 5–8 orders of magnitude, which implies that selection favors relatively smaller seeds in this desert. We identified five dispersal syndromes anemochory, zoochory, autochory, barochory, and ombrohydrochory, and anemochorous species were most abundant. Seed mass , , seed size , , and seed shape , differed significantly among the five dispersal syndromes and barochorous species were significantly smaller and rounder than the others. There were no significant correlations between seed mass seed weight , seed size , or seed shape variance and germination percentage. However, germination percentages differed significantly among the dispersal syndromes , and seeds of ombrohydrochorous species had higher germination percentages than those of the other species. In the Gurbantunggut Desert, the percentage of species with seed dormancy was about 80%. In general, our studies suggest that adaptive strategies in seed dispersal and germination of plants in this area are closely related to the environment in which they live and that they are influenced by natural selection forces.





Author: Huiliang Liu, Daoyuan Zhang, Xuejun Yang, Zhenying Huang, Shimin Duan, and Xiyong Wang

Source: https://www.hindawi.com/



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