首页 | 本学科首页   官方微博 | 高级检索  
     检索      

建国以来山东省小麦品种及其亲本的亲缘系数分析
引用本文:王江春,胡延吉,余松烈,王振林,刘爱峰,王洪刚.建国以来山东省小麦品种及其亲本的亲缘系数分析[J].中国农业科学,2006,39(4):664-672.
作者姓名:王江春  胡延吉  余松烈  王振林  刘爱峰  王洪刚
作者单位:1. 山东农业大学农学院/国家小麦改良中心泰安分中心/山东省作物生物学重点实验室,泰安,271018;烟台市农业科学研究院,烟台,265500
2. 仲恺农业技术学院,广州,510225
3. 山东农业大学农学院/国家小麦改良中心泰安分中心/山东省作物生物学重点实验室,泰安,271018
4. 山东省农业科学研究院作物研究所,济南,270100
基金项目:农业部农业结构调整重大技术研究专项基金
摘    要: 【目的】探讨山东省小麦品种的遗传多样性。【方法】对山东省建国以来历经9次更换的66个小麦品种的2145个组合进行了亲缘系数(coefficient of parentage, COP)分析。【结果】67.44%品种组合间存在亲缘关系,所有品种COP值变异范围为0.00~0.8203,平均为 0.06249,系谱亲缘系数高于平均值的占21.53%。随着时间的推移,各个年代之内品种间亲缘系数有逐渐增大的趋势,到90年代有所降低,然后又再增大。各年代内品种的亲缘系数普遍高于年代间品种的亲缘系数。早期的品种与以后年代的品种间的亲缘系数较小,中期和近期品种与以后年代的品种间的亲缘系数较大。同一个年代的品种,对后代的遗传贡献率,则随着年代的推移而逐渐减小。对品种间COP值按WAP法进行了聚类分析,除徐州438、齐大195、烟农78在COP为0处单独聚在一起外,其余63个品种可以聚为6个大类群,大多是同一年代的品种聚在一起,体现了不同年代的特点。山东省历史上年种植面积较大或推广时间较长的17个小麦品种,大都是较早利用引进亲本进行组配选育而成,亲本的亲缘系数较小,遗传差异较大。从系谱上看,山东省小麦的种质资源可基本上追溯到碧玉麦、Villa Glori(中农28)、洛夫林系、蚰子麦等四大骨干亲本体系。【结论】自50年代以来,品种间的遗传差异日趋狭窄,遗传多样性逐渐降低。

关 键 词:小麦  亲缘系数  遗传多样性  系谱
收稿时间:2005-10-20
修稿时间:2005-10-202006-02-13

Relationship Coefficient Analysis Among Winter Wheat Varieties and Their Parents in Shandong Province after Liberation
WANG Jiang-chun,HU Yan-ji,YU Song-lie,WANG Zhen-lin,LIU ai-feng,WANG Hong-gang.Relationship Coefficient Analysis Among Winter Wheat Varieties and Their Parents in Shandong Province after Liberation[J].Scientia Agricultura Sinica,2006,39(4):664-672.
Authors:WANG Jiang-chun  HU Yan-ji  YU Song-lie  WANG Zhen-lin  LIU ai-feng  WANG Hong-gang
Institution:1Agronomy College of Shandong Agricultural University /Taian Subcentre of National Wheat Improvement Center/Key Laboratory of Crop Biology of Shandong Province, Taian 271018; 2Zhongkai Agrotechnical College, Guangzhou 510255; 3Yantai Agricultural Sciences Academy, Yantai 265500; 4Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 270100
Abstract:【Objective】 This paper is to probe the relationship and genetic diversity of the winter wheat varieties that selected from liberation to now in Shandong Province. 【Method】 The coefficient parentage is used to analyze the 2145 combinations of 66 winter wheat varieties in nine varieties exchanging. 【Result】 It showed that the relationship exists among 67.44% combinations, the range of COP value of all varieties is 0.00-0.8203 with the average value 0.06249, 21.53% of pedigrees Relationship Coefficients (RC) are higher than the average. The RC of varieties of every year became bigger along with the time, fell in the 90's, and then increased again. The varieties RCs in each year were bigger than that between years, less that that between early and present varieties, while became larger between medium-term and latter varieties. The variety genetic contributions of the same age decreases with the time. The result of clustering analysis on varieties COP values on the basis of the WAP method showed that 63 varieties can be united into 6 big clusters based on different years, and the left three varieties, Xuzhou438, Qida195, Yannong 78 were made into a cluster at the value of 0. The RCs of the 17 varieties which have been extended many area for a long time in Shandong Province were little, with bigger genetic difference, and all those varieties were selected from overseas parents' combinations. The breeding genetic resources of Shandong Province can be traced back to four big core parents system of Biyu, Villa Glori (Zhongnong 28), Luofulin and Youzi wheat on the ground of pedigree analysis. 【Conclusion】 The genetic differences and diversity between varieties were little by little after 1950's.
Keywords:Winter wheat  Coefficient of parentage  Genetic diversity  Pedigree
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《中国农业科学》浏览原始摘要信息
点击此处可从《中国农业科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号