A pedigree-analysis approach to the descriptive epidemiology of autosomal-recessive disorders     

Man WY  Nicholas FW  James JW 《Preventive veterinary medicine》2007,78(3-4):262-273

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RAPD及其在果树上的应用     

李发芳  罗正荣  蔡礼鸿 《果树学报》1998,(3)

就RAPD的特点、操作及其在果树品种鉴定、遗传多样性检测、系谱解析和遗传图谱构建等方面的应用和进展进行了简要的阐述。  相似文献   

加利福尼亚兔选育研究     

任克良  梁全忠 《中国养兔杂志》1998,(6):17-19

经过对加利福尼亚兔进行３个世代纯种选育后,繁殖性能有了明显的改善。三世代窝产仔数、产活仔数、３５日龄断奶窝重分别为７．７３只、７．３３只、３７３３．６４ｇ,分别较零世代提高１０．４％、１１．６％和６９．８％,在ＣＰ１６．１３％、ＣＦ１４．５％的中等偏下营养条件下,四世代７７日龄体重达１９１５ｇ,３５～７７日龄日增重为２７．１１克,屠宰率达５６．２％,兔群整齐度有明显的改善。  相似文献   

合抱类型大白菜抗TuMV材料的选育     

苏学军  张焕家  杨衔美  李化银 《中国蔬菜》1998,1(1):6-0

试验选用对ＴｕＭＶ具有不同抗性的８个大白菜高代自交系,配制了“抗×抗”和“抗×感”的４个合抱类型的杂交组合,采用单交法和系谱定向选择,结合苗期人工接种鉴定和田间自然诱发鉴定的抗性筛选技术,筛选出２６份合抱类高抗ＴｕＭＶ新材料 【英文摘要】 Four combinations of heading Chinese cabbage inbred lines resistant or susceptible to TuMV were made to screen resistance to TuMV and typical ovate head type which has leaf tip closing on the top,but not overlapping. By pedigree method,induiduals from each segregation generation were identified for resistance and head type. After four generations,26 inbred lines with resistance and ideal headtype were obtained.   相似文献   

江西大豆育成品种分析及前景展望   总被引：2，自引：0，他引：2  

谭正宝  熊冬金 《江西农业学报》2007,19(10):28-29

综述了我国大豆育种现状,对江西育成的8个大豆品种进行了系谱分析,并在此基础上对江西大豆发展的前景进行了探讨。  相似文献   

中国大豆育成品种中江苏种质58—161的遗传贡献   总被引：13，自引：1，他引：12  

赵团结 《大豆科学》1998,17(2):120-128

由原中国农科院江苏分院育成品种５８－１６１作为直接亲本衍生出１２个品种，由它们进一步又衍生出４９个品种，其中有２９个接受了５８－１６１的细胞质。这６１个品种可归为５类系谱。  相似文献   

辣椒骨干亲本6421及其衍生系的创制与利用   总被引：1，自引：0，他引：1  

马艳青  戴雄泽  李雪峰  张竹青  陈文超  邹学校 《中国蔬菜》2015,1(6):11

通过对河西牛角椒的挖掘及选择,阐明骨干亲本6421及其衍生系的创制以及杂种优势利用,并分析了6421成为骨干亲本的原因,总结了选育骨干亲本的经验。  相似文献   

河南省小麦主要推广品种间的亲缘关系研究     

宋迎辉  吴少方  王林海  田志强  詹克慧  姚燕 《勤云标准版测试》2007,(3)

利用系谱分析和SSR标记对河南省小麦主要推广品种间的亲缘关系进行了研究。结果如下:(1)系谱分析表明10个主要推广品种间的血缘关系较近,豫麦2号和丰产3号是它们的骨干亲本,分别与7个和9个品种有血缘关系;(2)70对SSR引物在11个品种间扩增出211个等位变异,平均每个引物3.01个,84.29%的引物能检测到多态性位点,Xgwm294和barc061就能将这11个品种区分开;(3)品种间的遗传距离平均为0.495,变化范围较小,在0.36到0.63之间;(4)不同共同血缘比例的品种间的遗传距离差异较小,表明品种间的亲缘关系较近;(5)有1/2和1/4共同血缘的品种间的遗传距离较近,低于1/4共同血缘和无血缘品种间的遗传距离稍远,血缘关系不能很好反映品种间的亲缘远近。  相似文献   

Varietal discrimination and genetic relationships of Vitis vinifera L. cultivars from two major Controlled Appellation (DOC) regions in Portugal     

Isaura Castro  Juan Pedro Martín  Jesús Maria Ortiz  Olinda Pinto-Carnide 《Scientia Horticulturae》2011

Thirty-nine grapevine cultivars widely grown in Portugal, especially in Vinhos Verdes and Douro regions, and two well known international cultivars as standards, were genotyped at 12 microsatellite loci. The number of alleles per locus ranged from 6 to 12, and the number of allelic combinations per locus from 13 to 26. The total number of unique genotypes in the 12 analysed loci was 120, having most of the cultivars (38 out of 41) at least one unique genotype in any of the loci. The microsatellite profiles were adequate to discriminate 41 cultivars. The level of observed heterozygosity at each locus varied from 70.7% to 95.1%. VVMD28 has been revealed as one of the most informative markers. Several synonymies between Spanish and Portuguese cultivars were confirmed, and some homonymies are discussed. The genetic profiles of all 41 cultivars were searched for possible parent-offspring groups. The data obtained revealed the possible descendence of Touriga Franca from Touriga Nacional and Marufo.  相似文献   

Genetic Diversity and Relationships of Japanese Peach (<Emphasis Type="Italic">Prunus persica</Emphasis> L.) Cultivars Revealed by AFLP and Pedigree Tracing     

D.?H.?Xu  S.?Wahyuni  Y.?Sato  M.?Yamaguchi  H.?Tsunematsu  T.?BanEmail author 《Genetic Resources and Crop Evolution》2006,53(5):883-889

To evaluate the genetic diversity and to clarify the genetic relationships of Japanese peach cultivars, we analyzed the amplified fragment length polymorphism (AFLP) and traced the pedigree of 17 Japanese commercial peach cultivars and six traditional accessions. Sixteen AFLP primer combinations produced a total of 837 fragments and 146 polymorphic bands with a polymorphism percentage of 17.5%. All of the peach accessions could be identified from differences in at least 10 polymorphic bands. A cluster analysis showed that all the Japanese commercial peach cultivars, except ‘Kiyomi’ and ‘Jichigetsuto’, formed a major group consisting of three sub-groups. Of the six traditional accessions, four were genetically distant from the Japanese commercial peach cultivars while two accessions from China were classified into the Japanese commercial peach cultivars group. Both the AFLP analysis and pedigree tracing suggested that Japanese commercial peach cultivars are mainly derived from ‘Shanhai Suimitsuto’, one of the traditional accessions from China. Although the genetic relationships revealed by AFLP were generally in agreement with those shown by the pedigree information, some contradictions were found. Combining the AFLP results and pedigree information can provide a better understanding of the genetic relationships of Japanese peach cultivars.  相似文献