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当前位置: 首页 > 文章 > 不同小麦品种叶锈菌的遗传多样性分析 河南农业科学 2018 (9) 77-81
Position: Home > Articles > Analysis of Genetic Diversity of Puccinia triticina Isolated from Different Wheat Cultivars Journal of Henan Agricultural Sciences 2018 (9) 77-81

不同小麦品种叶锈菌的遗传多样性分析

作  者：
张梦雅;孟庆芳;张林;高颖;闫红飞;刘大群
关键词：
小麦叶锈菌;EST-SSR;遗传多样性;小麦品种
摘  要：
为了快速检测小麦叶锈菌遗传多样性与寄主品种的关系,利用叶锈菌17对EST-SSR引物对2015年从河南周口2块小麦苗圃不同品种叶片上直接收集的63份小麦叶锈菌材料(周口南地块27份,周口西地块36份)进行分子多态性及分子小种类型分析。聚类结果显示,63个小麦叶锈菌株间遗传相似系数为0. 70~1. 00。2块苗圃小麦叶锈菌群体间遗传距离为0. 021 5,遗传相似系数为0. 978 7,表明2个地块间小麦叶锈菌群体遗传相似性高。2个地块小麦叶锈菌遗传多样性(Ht)为0. 22,群体内遗传多样性(Hs)为0. 21,群体间遗传多样性(Dst)仅为0. 01,遗传分化系数(Gst)较低,为0. 05,表明2块苗圃间小麦叶锈菌群体遗传多样性较低,群体内多样性较群体间多样性更丰富。群体内遗传变异占总变异的94. 44%,群体间遗传变异占总变异的5. 56%,表明遗传分化在2块苗圃群体间和群体内都存在,但叶锈菌遗传变异主要来源于群体内变异。小麦叶锈菌遗传多样性与寄主品种有一定关系,小麦品种亲本来源相同,其上叶锈菌小种类型较为一致,遗传相似性高,亲缘关系近,遗传多样性低。
译  名：
Analysis of Genetic Diversity of Puccinia triticina Isolated from Different Wheat Cultivars
作  者：
ZHANG Mengya;MENG Qingfang;ZHANG Lin;GAO Ying;YAN Hongfei;LIU Daqun;College of Plant Protection,Agricultural University of Hebei/National Engineering Research Center for Agriculture in Northern Mountainous Areas/Biological Control Center of Plant Diseases and Plant Pests of Hebei Province;Graduate School,Chinese Academy of Agricultural Sciences;
单  位：
ZHANG Mengya%MENG Qingfang%ZHANG Lin%GAO Ying%YAN Hongfei%LIU Daqun%College of Plant Protection,Agricultural University of Hebei/National Engineering Research Center for Agriculture in Northern Mountainous Areas/Biological Control Center of Plant Diseases and Plant Pests of Hebei Province%Graduate School,Chinese Academy of Agricultural Sciences
关键词：
Puccinia triticina;;EST-SSR;;Genetic diversity;;Wheat cultivar
摘  要：
In order to explore the relationship between the genetic diversity of P. triticina and wheat cultivar,63 isolates of P. triticina were gathered from different wheat cultivars in south(27 isolates) and west(36 isolates) of Zhoukou,Henan province in 2015 and were analyzed for genetic diversity by 17 ESTSSR primers in this research. The results showed that the genetic similarity coefficient of 63 isolates of P.triticina was 0. 70—1. 00. The genetic distance of P. triticina between the two fields was 0. 021 5 and the genetic similarity coefficient was 0. 978 7,which indicated that the genetic similarity between the two fields was high. The total genetic diversity(Ht) of P. triticina from the two fields was 0. 22,the genetic diversities of intra-population(Hs) and inter-population(Dst) were 0. 21 and 0. 01,respectively,and the genetic differentiation coefficient(Gst) was 0. 05,which indicated that the genetic diversity of P. tritici-na between the two fields was lower,and the genetic diversity of intra-population was more abundant than that of inter-population. The genetic variation of intra-population accounted for 94. 44% of the total variation,while the genetic variation of inter-population contributed 5. 56%,indicating that genetic variation of P. triticina existed both intra-and inter-population,but mainly originated from intra-population. The results also showed that the genetic diversity of P. triticina had a certain relationship with wheat cultivar.When the origin of wheat cultivars was more similar,the type of P. triticina races from them was more consistent,the genetic similarity was higher,the relationship was closer and the genetic diversity was smaller.

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