Effects of Temperature and Humidity on the Germination of Two Pioneer Species in Ecological Restoration

Abstract:

Seed germination and seedling establishment is a critical stage in the life cycle. Cynodon dactylon and Medicago sativa are two important species using in ecological restoration. Control experiments were employed to test the effects of temperature and humidity on the germination of the two pioneer species. The experiment included three temperature treatment level (15, 20, 25 °C) and four humidity treatment (5, 10, 15, 20 %) with three repeats. Results showed that temperature and humidity had significant effects on the germination of both species seeds. Seed germination of C. dactylon fluctuated with the increasing temperature, but increased with the increasing humidity. The optimal germination temperature and humidity for C. dactylon seeds was 20 °C and 20 % respectively. Seed germination of M. sativa increased with the increasing temperature meanwhile fluctuated with the increasing humidity. The optimal germination temperature and humidity for M. sativa seeds was 25 °C and 10 % respectively. It is critical to provide suitable soil humidity for seed germination in the ecological engineering.

• Periodical: Applied Mechanics and Materials (Volumes 209-211)
• Pages: 1265-1268
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.209-211.1265
• Online since: October 2012
• Authors: Di Zhang, Xi Liu, Fang Qing Chen
• Keywords: Cynodon Dactylon, Germination Percentage, Humidity, Medicago sativa, Temperature

References

[1] L. Baeten, H. Jacquemyn, H.V. Calster, E.V. Beek, R. Devlaeminck, K. Verheyen, M. Hermy: Journal of Ecology. Vol. 97 (2009), pp.109-117.

DOI: 10.1111/j.1365-2745.2008.01455.x

[2] A. Kolb, K. Barsch: Acta Oecologica. Vol. 36 (2010), pp.507-513.

[3] Shouhua Gou, Song Yu, Yongqi Zheng, Xiaoyan Yang, Yuan Lin. Study on optimal conditions of seed germination of ailanthus. Journal of Northwest Plants. Vol. 05 (2007), pp.178-182.(in Chinese)

[4] Liu Li, Huichun Zhang. The problems should be pay attentioned to in the seed germination test. Seed Science and Technology. Vol. 04 (2007), pp.60-61.(in Chinese)

[5] Guogang Xu, Qinwang Lai. Practice of ecological control of highway slope in Southwest China. Pratacultural Science. Vol. 2 (2002), pp.66-69.(in Chinese)

[6] Qunshan Li, Shengwen Zou. Road construction of ecological environment in western regions. Highway. Vol. 6 (2001), pp.87-91.(in Chinese)

[7] Depei Zhou, Junyun Zhang. Vegetation,slope protection engineering. Beijing: People's Communications Press. (2003), pp.1-11.(in Chinese)

[8] Wennian Xu, Jianjun Ye, Mingtao Zhou. Several problems of vegetation technology for protecting slopesusing vegetation-growing concrete. Water Resources and Hydropower Engineering. Vol. 35 (2004), pp.50-52.(in Chinese)

[9] Yugang Wang, Arbity, Qi Man. Differences in response to two bermudagrass varieties to drought stress.Pratacultural Science. Vol. 04 (2006), pp.60-66.(in Chinese)

[10] Lansheng Zhou, Qigen Dai. Good turf grass seed——Bermudagrass. Practical Technology of Forestry. Vol. 10 (2004), pp.45-46.(in Chinese)

[11] Yuhai Yang, Ping-an Jiang, Luo Ming. Effects of Planting Medicago sativa L on Soil Fertility. Arid Land Geography. Vol. 28 (2005), pp.248-251.(in Chinese)

[12] Yuquan Guo, Jinfen Wang, Gao Xiang. The influence of planting the purple flower alfalfa on the nutrient content of the soil. Sichuan Grassland. Vol. 4 (2005), pp.20-25.(in Chinese)

[13] Yuemin Zhang, Genqian Li, Lianfang Li, Daiyi Liu, Minchong Zhao. Effect of temperature and humidity on the seed germination of pinus yunnanensis. Shanxi Forestry Science and Technology. Vol. 04 (2010), pp.5-8.(in Chinese)

[14] Yi-er Ta, Meihua Yang. Effect of different temperature on seed germination of hippophae rhamnoides. Seed. Vol. 09 (2004), pp.32-34.(in Chinese)