Physiological analysis on mechanisms of cold-tolerance of Dongxiang wild rice (Ⅰ) | 东乡野生稻耐冷性生理研究Ⅰ
2010
Xu Meizhen, Jiangxi Agricultural University, Nangchang (China), Vocational Technology and Normal College | Liu Xiao, Jiangxi Agricultural University, Nangchang (China), College of Science | Yu Liqing, Jiangxi Academy of agricultural Sciences, Nangchang (China), Rice Research Institute
[Objective] The research aimed to study the effects of soluble substance concentration in cell and the scavenging activity of active oxygen radicals on the cold-tolerance physiology of Dongxiang wild rice. [Method] Dongxiang wild rice was used as materials to detect and compare the content of soluble sugar, free proline and soluble protein, POD activity, CAT activity, MDA content in the leaves in different growth periods.Using with control of two species of common cultivated rice Xieqingzao and Nongda 288. [Result] The contents of soluble protein, soluble sugar, and free proline in the leaves of Dongxiang wild rice were higher in the whole growth periods. POD activity maintained at high level. The content of MDA in the leaf tissues in Dongxiang wild rice was had no great fluctuation and it was relative higher than that in control rice varieties. [Conclusion] This study laid the foundation for further insight into the physiological mechanism of the cold-tolerance of Dongxiang wild rice.
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