谷子种子萌发对模拟干旱胁迫的响应及其耐旱性综合评价  

Evaluation of Drought Resistant and Response of Millet Seed Germination Under Drought Stress

作　　者：王燕[1] 吴桂丽[1] 牛瑞明[1] 张丽云[1] 刘杰[1] 

机构地区：[1]河北北方学院农林科技学院,河北张家口075000

出　　处：《种子》2013年第5期4-7,共4页Seed

基　　金：国家公益性行业农业科研专项"长城沿线坡耕地抗旱补水播种保苗综合技术研究与示范"(编号:201003053);河北省重点学科建设项目

摘　　要：谷子[Setaria italica(L.)Beauv]是一种优良的抗旱作物资源,在农业中具有重要的地位。但近年来,随着全球气候的变暖,水资源严重短缺,在栽培区域年降水量为250～450 mm,十年九春旱。急需选育出一些高抗旱性的材料。本研究以9个谷子材料为试材,以不同渗透势的PEG-6000溶液模拟水分胁迫条件,通过测定萌发抗旱指数和活力抗旱指数、相对发芽势、相对发芽率4个指标,研究了9个谷子材料的耐旱能力,并采用模糊隶属法用上述4个指标对9个不同材料的耐旱性进行综合评价。结果表明,9个谷子材料耐旱隶属函数总平均值范围为0.023～0.710。国08-25总平均值最高,耐旱隶属值为0.710,耐旱性最高,赤10-321总平均值最低,耐旱隶属值为0.023,耐旱性最低。Millet （Setaria italica （L.）Beauv） is excellent drought resisting crop and important to agriculture. But in recent years, with the warming of the global climate, the water is severe shortage, in the cultivation areas, annual precipitation is 250 -450 mm, nine years of spring in ten years were drought, In order to select drought resistant varieties to adapt to cultivation on dry land. In this study, the materials were 9 millet materials. The sprout index of drought resisting, vigor index of drought resisting, and relative germination rate, relative germination potential of 9 millet seeds tested under different osmotic potentials （PEG-6000） to evaluate their drought resistance using the fussy subordinate function. The results indicated that Guo 08-25 and Chi 10-3：21 had relatively the highest and the lowest drought resistance. The average subordinate values of them resistance to drought stress were relatively 0. 710 and 0. 023.

关 键 词：谷子 水分胁迫 耐旱性 模糊隶属法 

分 类 号：S515[农业科学—作物学]