Plant Diversity ›› 2007, Vol. 29 ›› Issue (06): 677-681.

• Articles •

### The Effects of Accelerated Aging on Fargesia denudata (Gramineae) Seeds and the Physiological Differences among Seeds of Different Sizes

WANG Hai1 , ZHANG Su-Lan2 , SU Zhi-Xian2, XIAO Kai-Huang1 , QUAN Qiu-Mei3

1. 1 Sichuan Provincial Key Laboratory of Environmental Science and Biodiversity Conservation , China West Normal University ,Nanchong 637002 , China; 2 Mianyang Normal University , Mianyang 621000 , China
• Received:2007-02-01 Online:2007-12-25 Published:2007-12-25
• Contact: SU Zhi-Xian

Abstract: Seeds of Fargesia denudate were treated to accelerated aging and the following indices were measured: seed vigor, T-AOC, activities of antioxidative enzymes , contents of MDA, and conductivity , and these indices were also measured on the seeds that differ in size . The results indicated that after different degrees of accelerated aging, the contents of MDA and conductivity gradually increased , while the value of T-AOC and activities of CAT were reduced significantly. The activities of SOD went up, but the ratio of SOD&#1089839;MDA went down after an initial obvious rise . T-AOC and SOD&#1089839;MDA could reflect the level of seed aging well, and T-AOC and conductivity had significant correlations with seed vigor . The vigor of middle-sized seeds was higher than that of bigger and smaller seeds . The value of conductivity and contents of MDA went up as the bigger seeds were under determination , and the activities of anti-oxidative enzymes and T-AOC went down during the same process . This indicates that the size of Fargesia denudata seeds correlates with the indices tested in this study.

Key words: Fargesia denudata

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