马铃薯高花色苷品种（系）的UV-B辐射耐受性研究

项目名称： 马铃薯高花色苷品种（系）的UV-B辐射耐受性研究

项目编号： No.31260342

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 农业科学

项目作者： 郭华春

作者单位： 云南农业大学

项目金额： 55万元

中文摘要： 全球气候变化使地面UV-B辐射显著增加，对陆地植物产生了广泛的影响，其对农作物的影响已成为研究热点。但对马铃薯(Solanlum tuberosum L.)这种重要薯类作物的报道不多，人们对UV-B增强下马铃薯的综合影响仍不是很清楚，难于预测未来气候变化对马铃薯的影响。另外，彩色马铃薯的起源和生态分布显示UV-B与花色苷有着紧密联系，相关研究也验证了花色苷能有效提高植物的UV-B耐受性，但马铃薯花色苷在此方面的研究一直处于空白。本项目以云南高花色苷含量的马铃薯品种（系）为材料，研究大田马铃薯在长期UV-B辐射增强条件下：（1）高花色苷马铃薯形态指标及生物学特性的影响；（2）生理生化指标及光合作用的响应；（3）产量及品质变化；（4）花色苷关键合成酶基因的表达差异。项目实施有助于人们预测在全球气候变化背景下马铃薯可能受到的综合影响，揭示彩色马铃薯花色苷在未来抗UV-B等抗逆育种中的潜在作用。

中文关键词： 马铃薯；花色苷；UV-B辐射；耐受性；响应

英文摘要： The changes of global climate have remarkably increased the UV-B radiation on the ground level. This event has brought extensive impacts on terrestrial plants and the effects of UV-B radiation on crops has become one of research hotspot. Nevertheless, as a kind of important tuber crop, potatoes (Solanlum tuberosum L.) have not been sufficiently concerned. The general effects of enhanced UV-B radiation on potatoes are still unclear. Consequently, it's extremely hard to predict how effects would be caused by this climate tendency to potatoes in the future. Otherwise, the origin and ecological distribution of colored potatoes indicate the tight correlation between UV-B radiation and its anthocyanins.Some recent research also showed the anthocyanins existed in different plants can effectively improve its tolerance to enhanced UV-B radiation. But the corresponding study has not been done in potatoes so far. This project bases on the high anthocyanins content potato cultivars（strains）collected from Yunnan Province which suffered enhanced UV-B radiation under field conditions to investigate the following items: (1) effects on potato morphological and biological characteristics (2) effects on physiological and biochemical properties and photosynthesis system (3) effects on field yield and tuber quality (4) analysis

英文关键词： potato；anthocyanin；UV-B radiation；tolerance；response