不同地域烤烟品种对UV-C胁迫的适应性  

Adaptability of Regional Flue-cured Tobacco Cultivars to UV-C Stress

作　　者：赵月[1] 周冀衡[1] 左敏[1] 周和[1] 范江[1] 

机构地区：[1]湖南农业大学烟草研究院,长沙市芙蓉区农大路1号410128

出　　处：《烟草科技》2011年第11期66-70,共5页Tobacco Science & Technology

基　　金：云南省烟草专卖局资助项目"烤烟品种的区域布局规划研究与推广"(09A02)

摘　　要：为探讨不同烤烟品种对UV-C胁迫的适应性,以6个烤烟主栽品种为材料,在琼脂平板培养条件下采用UV-C辐照时间胁迫处理,分析了不同UV-C胁迫时间条件下各品种烟草幼苗的单株鲜重、叶片的光合色素含量、过氧化物酶活性(POD)、类黄酮和丙二醛(MDA)含量的变化。结果表明:经UV-C辐照时间胁迫处理,各品种幼苗的单株鲜重、光合色素含量、类黄酮含量呈现出下降的趋势,而POD活性、MDA含量呈现出上升的趋势。由于基因型的不同,6个烤烟品种对UV-C胁迫表现出了不同的适应性,且其适应性呈现出一定的规律,低海拔、高纬度地区的品种对辐照的适应性弱,而高海拔、低纬度地区的品种对辐照的适应性强。6个品种对UV-C胁迫的适应性排序为:云烟85>红大>云烟87>遵烟1号>岩烟97>龙江911。In order to find out the adaptability of different flue-cured tobacco cultivars to UV-C stress, six major flue-cured tobacco cultivars cultivated in agar medium were treated with different UV-C irradiation durations. The fresh weight per seedling, the content of photosynthetic pigment, activity of POD and changes of flavonoid and MDA contents in tobacco leaf were determined. The results showed that the fresh weight per seedling and the contents of photosynthetic pigment and flavonoid in tobacco leaf decreased, while POD activity and MDA content increased with UV-C stress. Due to their difference in genotypes, the 6 cultivars showed different adaptability to UV- C stress, the cuhivars from the areas of low altitude and high latitudes presented lower adaptability to radiation than that of high altitude and low latitude. The cultivars in the order of their adaptability to UV-C stress were Yunyan 85 〉 Hongda 〉 Yunyan 87 〉 Zunyan 1 〉 Yanyan 97 〉 Longjiang 911.

关 键 词：UV—C 烤烟 光合色素 抗逆境指标 

分 类 号：S572.01[农业科学—烟草工业]