水稻种子花色苷形成及其对稻谷储藏特性的影响  

Formation of Anthocyanin in Rice(Oryza sativa L.) and Influence of Anthocyanin Content to Storage

作　　者：张丽丽[1] 刘斌美[1] 许学[1,2] 章忠贵[1,2] 吴跃进[1] 

机构地区：[1]中国科学院离子束生物工程学重点实验室,合肥230031 [2]安徽农业大学农学院,合肥230036

出　　处：《植物遗传资源学报》2012年第6期974-978,983,共6页Journal of Plant Genetic Resources

基　　金：中科院方向性项目(KJCX2-YW-N34;KJCX2-EW-N05);国家自然科学基金(10975153);安徽省科技计划项目(11010301008);安徽省自然科学基金(11040606Q58)

摘　　要：花色苷是有色稻种皮和颖壳里呈现颜色的主要物质,属于类黄酮类物质,具有抗氧化性。本研究围绕水稻种子形成过程中花色苷含量的变化以及其对稻谷储藏特性变化的影响,探讨花色苷在稻谷储藏中延长种子寿命的作用。结果显示:选取的3个品种中,水稻种子的花色苷形成主要在发育初期,随着颖果体积的增大,颖果花色苷的含量会逐渐降低,而颖壳的花色苷含量变化不显著,将种子进行人工老化后,仍只有颖果的花色苷含量出现下降的趋势,表明种子在老化过程中颖壳的花色苷不参与抗老化的各项代谢反应。老化种子SOD活性分析显示,花色苷含量低的中籼9311可能是通过SOD酶活性增加,削减高温高湿胁迫对种子衰老的影响;由稻谷感染霉菌情况显示在3个水稻品种中,花色苷含量高的品种的抗霉菌能力要稍优于花色苷含量低的品种。但综合来看,花色苷含量高低并不是决定种子寿命的主要因素。Anthocyanin, mainly existing in glume and episperm of colored rice, is a group of compounds formed from anthocyanidin and glucoside. Because of the structure of flavonoid, anthocyanin has the ability of an- tioxidation. The paper reported the changes of rice anthocyanin in growing and ageing processes and the function of rice anthocyanin to extend seed longevity in seed storage. The results indicated that rice anthocyanin had been accumulated in the early stage. With the increase of the seed＇s size, anthocyanin content gradually decreased in car- yopsis; meanwhile, the anthocyanin content did not change significantly in glumc. After artificial ageing, the antho- cyanin content notably decreased, contrary to the result in glume. It might indicate that the anthoeyanin in glume doesn＇t get involved in antioxidant response. The analyses of mycotic infection of ageing seeds suggested that, in the three varieties, the anti-mycete ability of the ones with higher content of anthocyanin was better than that with lower content of anthocyanin. Considering the results, anthocyanin was not the crucial factor in seed storage.

关 键 词：花色苷 稻谷 耐储藏 人工老化 抗霉菌 

分 类 号：S511[农业科学—作物学]