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| Seed Germination Characteristics and Chemical Composition of Eight Xerophytic Shrub Species |
| Li Qian1, Ren Yuntao1, Niu Decao1, Zhang Baolin2, Zhao Hui3, Fu Hua1 |
1. State Key Laboratory of Grassland Agro-ecosystems/College of Pastoral Agriculture Scince and Technology, Lanzhou University, Lanzhou 730000, China;
2. Alxa Alliance Grassland Station of Inner Mongolia, Bayan Haote 750306, Inner Mongolia, China;
3. Ordos Water Authority of Inner Mongolia, Ordos 017000, Inner Mongolia, China |
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Abstract The purpose of this paper was to study the relationship between seeds' germination and the chemical components of eight xerophytic shrubs (Artemisia sphaerocephala, Reaumuria soongorica, Haloxylon ammodendron, Hedysarum mongdicum, Zygophyllum xanthoxylum, Nitraria tangutorum Bobr., Ammopiptanthus mongolicus, Caragana korshinskii) in suitable germination conditions. These seeds' content of starch, fat, protein, carbon (C), nitrogen (N), phosphorus (P) and germination rate and water absorption were detected, while the C:N:P ratios were estimated. The results showed that fat content, protein content, nitrogen (N) content had a significant positive correlation to the lowest water content of seed germination, while the single chemical composition and C:N:P of seed had no significant effect on germination rate. We divided the mechanism which the 8 species of seeds adapt to the environment into two categories: one needs a higher moisture and germinated rapidly and intensively; the other one needs a lower moisture and germinated continuously and dispersedly.
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Received: 15 August 2014
Published: 20 March 2015
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2015, Vol. 35 
